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Every number here is counted from the manufacturer's own service documents as read on 2026-10-18. A code counts only when its meaning was verified on the page it cites. "With checks" means the manual's own procedure is on the card. Nothing is authored.

1,286
manuals read and cited
34,183
codes verified on their page
13,175
with the manual's checks
18,351
symptom-chart rows

ice machines

HoshizakiOpen
Manuals 128Codes 340142 with the manual's checks2 readings8650 symptom rows
  • IM-500SAB Stackable Square Cuberhoshizaki_IM-500SAB-Square-Cube-Service-Manual_service-manua · 9 codes, 9 with checks, 70 symptom rows
  • IM-200BAA_serv_LTR.pdfIM-200BAA_serv_LTR.pdf · 9 codes, 9 with checks, 70 symptom rows
  • IM-200BAC_serv.pdfIM-200BAC_serv.pdf · 9 codes, 9 with checks, 70 symptom rows
  • IM-200BAK_serv.pdfIM-200BAK_serv.pdf · 9 codes, 9 with checks, 70 symptom rows
  • IM-500SAA_serv.pdfIM-500SAA_serv.pdf · 9 codes, 9 with checks, 70 symptom rows
  • IM-544SAK_serv.pdfIM-544SAK_serv.pdf · 9 codes, 9 with checks, 70 symptom rows
  • KMS-2000MLH_serv.pdfKMS-2000MLH_serv.pdf · 5 codes, 3 with checks, 137 symptom rows
  • KMS-830MLH_serv.pdfKMS-830MLH_serv.pdf · 5 codes, 3 with checks, 133 symptom rows
  • and 120 more manuals
ManitowocOpen
Manuals 34Codes 26523 with the manual's checks637 symptom rows
  • Indigo Series QuietQube ice machinemanitowoc_Indigo_QuietQube_SM_000014795_service-manual.pdf · 34 codes, 129 symptom rows
  • Indigo NXT R290 refrigerant ice machinesmanitowoc_STH0097_R290_indigoNXT_hb_mii_en_wiring-diagram.pd · 37 codes, 2 with checks, 90 symptom rows
  • Indigo Series air/water/remote condenser ice machinesmanitowoc_indigo_awn_sth_mii_en_000014794_wiring-diagram.pdf · 31 codes, 2 with checks, 68 symptom rows
  • Indigo Series ice machines with R290 refrigerantmanitowoc_Indigo_R290_Models_SM_STH038_service-manual.pdf · 25 codes, 84 symptom rows
  • Indigo NXT air/water/remote condenser ice machinesmanitowoc_000018553_IndigoNXT_AWN_sth_mii_en_web_wiring-diag · 22 codes, 2 with checks, 56 symptom rows
  • Undercounter Ice Machines (QM/SM/Q Series)manitowoc_80011119_Undercounter_Handbook_wiring-diagram.pdf · 3 codes, 1 with checks, 86 symptom rows
  • Indigo NXT QuietQube remote condensing unit ice machinesmanitowoc_000015431_06_IndigoNXT_QuietQube_sth_mii_en_web_wi · 37 codes, 1 with checks
  • ST3000W water-cooled and SF3000C QuietQube ice machinesmanitowoc_ST3000W_SF3000C_STH114_00_hb_mii_en_wiring-diagram · 4 codes, 2 with checks, 58 symptom rows
  • and 26 more manuals
ScotsmanOpen
Manuals 35Codes 4020 with the manual's checks12 readings1813 symptom rows
  • Prodigy Elite air/water/remote cooled modular cuberscotsman_Prodigy-Elite-MC0322-MC0522-MC0722-Cuber-Service-Ma · 18 codes, 7 with checks, 170 symptom rows
  • Prodigy Series modular cuber (includes Prodigy Plus)scotsman_Prodigy-C0322-C0530-C0722-Modular-Cuber-Service-Man · 2 codes, 2 with checks, 170 symptom rows
  • Prodigy Elite air/water/remote cooled modular cuber (X models)scotsman_Prodigy-Elite-MC0322X-MC0522X-MC0722X-Cuber-Service · 0 codes, 170 symptom rows
  • Prodigy Plus A Series modular flake and nugget ice machinesscotsman_Prodigy-Plus-A-Flake-Nugget-AWR-Service-Manual_serv · 7 codes, 6 with checks, 98 symptom rows
  • Prodigy Plus A Series modular flake and nugget ice machines (X models)scotsman_Prodigy-Plus-A-Flake-Nugget-AWRX-Service-Manual_ser · 0 codes, 98 symptom rows
  • Prodigy Plus A Series modular flake and nugget ice machines, water and remote modelsscotsman_Prodigy-Plus-A-FS2330WR-Flake-Nugget-Service-Manual · 0 codes, 78 symptom rows
  • Cuber, CU0515scotsman_CU0515-Cuber-Install-User-Manual_wiring-diagram.pdf · 3 codes, 3 with checks, 30 symptom rows
  • CU1526, CU2026, CU3030 cuberscotsman_CU1526-CU2026-CU3030-Cuber-Service-Manual_service-m · 0 codes, 60 symptom rows
  • and 27 more manuals
Ice-O-MaticOpen
Manuals 5Codes 295 with the manual's checks2 readings
  • iceomatic_GEM-MFI-Nugget-Service-Manual_service-manual.pdficeomatic_GEM-MFI-Nugget-Service-Manual_service-manual.pdf · 7 codes, 4 with checks
  • Elevation Series CIM Modular Cubersiceomatic_CIM_Service_Manual_service-manual.pdf · 7 codes, 1 with checks
  • Elevation Series CIM Modular Cubersiceomatic_CIMTech-Manual2020_service-manual.pdf · 3 codes
  • iceomatic_CIM-Installation-and-Owner's-Manual_install-manual.pdficeomatic_CIM-Installation-and-Owner's-Manual_install-manual · 5 codes
  • CIMU Cuber Ice Modular Undercountericeomatic_CIMU_60hz_InstallManual_install-manual.pdf · 7 codes
FollettOpen
Manuals 43Codes 0353 symptom rows
  • follett_00129932R07_document.pdffollett_00129932R07_document.pdf · 0 codes, 10 symptom rows
  • follett_00135830R05_document.pdffollett_00135830R05_document.pdf · 0 codes, 10 symptom rows
  • follett_01582550R00_service-manual.pdffollett_01582550R00_service-manual.pdf · 0 codes, 10 symptom rows
  • follett_01582568R00_service-manual.pdffollett_01582568R00_service-manual.pdf · 0 codes, 10 symptom rows
  • follett_01223080R02_service-manual.pdffollett_01223080R02_service-manual.pdf · 0 codes, 9 symptom rows
  • follett_01223080R13_service-manual.pdffollett_01223080R13_service-manual.pdf · 0 codes, 9 symptom rows
  • follett_Im-IOSMan-HorEliteHCE1010A-W-01096155R09_service-manual.pdffollett_Im-IOSMan-HorEliteHCE1010A-W-01096155R09_service-man · 0 codes, 9 symptom rows
  • follett_Im-IOS-HCD1400RN-BeforeC19999-0135848R04_document.pdffollett_Im-IOS-HCD1400RN-BeforeC19999-0135848R04_document.pd · 0 codes, 9 symptom rows
  • and 35 more manuals

walk-ins and commercial refrigeration

HeatcraftOpen
Manuals 18Codes 9050 with the manual's checks7 readings583 symptom rows
  • intelliGen Refrigeration Controller (iRC)heatcraft_intelliGen-IWRC-IOM_iom.pdf · 37 codes, 25 with checks
  • heatcraft_H-IM-67H_wiring-diagram.pdfheatcraft_H-IM-67H_wiring-diagram.pdf · 12 codes, 8 with checks
  • heatcraft_H-IM-BEACON_wiring-diagram.pdfheatcraft_H-IM-BEACON_wiring-diagram.pdf · 7 codes, 87 symptom rows
  • heatcraft_H-IM-79G_wiring-diagram.pdfheatcraft_H-IM-79G_wiring-diagram.pdf · 8 codes, 8 with checks
  • Refrigeration Systems (unit coolers, condensing units, air-cooled condensers)heatcraft_H-IM-64L_wiring-diagram.pdf · 0 codes, 81 symptom rows
  • heatcraft_H-IM-QRC_wiring-diagram.pdfheatcraft_H-IM-QRC_wiring-diagram.pdf · 7 codes, 7 with checks
  • heatcraft_H-IM-PCS_wiring-diagram.pdfheatcraft_H-IM-PCS_wiring-diagram.pdf · 0 codes, 73 symptom rows
  • heatcraft_H-IM-82C_wiring-diagram.pdfheatcraft_H-IM-82C_wiring-diagram.pdf · 0 codes, 63 symptom rows
  • and 10 more manuals
Russell (HTPG)Open
Manuals 8Codes 533 with the manual's checks1 readings248 symptom rows
  • HTPG0425_TroubleShoot_Guide_EN.pdfHTPG0425_TroubleShoot_Guide_EN.pdf · 15 codes, 3 with checks, 69 symptom rows
  • D06380C2-2DD1-4E4D-81C1-0544ECA7F69F.pdfD06380C2-2DD1-4E4D-81C1-0544ECA7F69F.pdf · 0 codes, 53 symptom rows
  • Apex IOM H900 1 Oct. 2013.pdfApex IOM H900 1 Oct. 2013.pdf · 0 codes, 45 symptom rows
  • HTPG-Medium-Profile-and-Large-Warehouse-Unit-Coolers-IOM-022021B-Web.pdfHTPG-Medium-Profile-and-Large-Warehouse-Unit-Coolers-IOM-022 · 0 codes, 28 symptom rows
  • Ultra_temp_IOM_101_2.pdfUltra_temp_IOM_101_2.pdf · 0 codes, 27 symptom rows
  • Low_Velocity_Unit_Cooler_IOM_110-3.pdfLow_Velocity_Unit_Cooler_IOM_110-3.pdf · 0 codes, 26 symptom rows
  • IOM_ECONET2.0_0326.pdfIOM_ECONET2.0_0326.pdf · 19 codes
  • IOM_ECONET2.0_0426.pdfIOM_ECONET2.0_0426.pdf · 19 codes
Master-BiltOpen
Manuals 25Codes 4545 with the manual's checks495 symptom rows
  • master-controller-manual-legacy-1-0-systems.pdfmaster-controller-manual-legacy-1-0-systems.pdf · 18 codes, 18 with checks
  • master-controller-quick-reference-guide-legacy-1-0-system.pdfmaster-controller-quick-reference-guide-legacy-1-0-system.pd · 18 codes, 18 with checks
  • master-controller-manual.pdfmaster-controller-manual.pdf · 9 codes, 9 with checks
  • 101628-Pre-Assembled-Remote-Refrig-System-IOM-Instructions.pdf101628-Pre-Assembled-Remote-Refrig-System-IOM-Instructions.p · 0 codes, 52 symptom rows
  • Remote-Condensing-Unit-Manual-fa37a3.pdfRemote-Condensing-Unit-Manual-fa37a3.pdf · 0 codes, 52 symptom rows
  • norlake_Remote-Condensing-Unit-Manual_wiring-diagram.pdfnorlake_Remote-Condensing-Unit-Manual_wiring-diagram.pdf · 0 codes, 52 symptom rows
  • endless-bem-bel-merchandisers-manual-3bf772.pdfendless-bem-bel-merchandisers-manual-3bf772.pdf · 0 codes, 27 symptom rows
  • endless-bem-bel-merchandisers-manual.pdfendless-bem-bel-merchandisers-manual.pdf · 0 codes, 27 symptom rows
  • and 17 more manuals
TraulsenOpen
Manuals 25Codes 0615 symptom rows
  • md_0rnNbwHi38iI.jpg.pdfmd_0rnNbwHi38iI.jpg.pdf · 0 codes, 67 symptom rows
  • md_3gXaFCE5YkRC.jpg.pdfmd_3gXaFCE5YkRC.jpg.pdf · 0 codes, 65 symptom rows
  • md_11ScNkIteLJ0.jpg.pdfmd_11ScNkIteLJ0.jpg.pdf · 0 codes, 65 symptom rows
  • md_0qAr5MZmhWon.jpg.pdfmd_0qAr5MZmhWon.jpg.pdf · 0 codes, 31 symptom rows
  • md_01vkzBNo6d1T.jpg.pdfmd_01vkzBNo6d1T.jpg.pdf · 0 codes, 29 symptom rows
  • md_zGAjcmRPzwRV.jpg.pdfmd_zGAjcmRPzwRV.jpg.pdf · 0 codes, 29 symptom rows
  • md_qAB2j3Zo8aLQ.jpg.pdfmd_qAB2j3Zo8aLQ.jpg.pdf · 0 codes, 29 symptom rows
  • md_rctiUeFQc92A.jpg.pdfmd_rctiUeFQc92A.jpg.pdf · 0 codes, 25 symptom rows
  • and 17 more manuals
Nor-LakeOpen
Manuals 6Codes 8635 with the manual's checks20 readings
  • LogiTemp Electronic Controller System for Split Pak A2L refrigeration systemsnorlake_LogiTemp-Split-Pak-A2L-Manual_wiring-diagram.pdf · 67 codes, 24 with checks
  • LogiTemp Electronic Controller System for Split-Pak A1 refrigeration systemsnorlake_LogiTemp-Plus-Manual-A1-2_wiring-diagram.pdf · 8 codes, 8 with checks
  • norlake_LogiTemp-Bonding-Two-Controllers-Quick-Start_unknown.pdfnorlake_LogiTemp-Bonding-Two-Controllers-Quick-Start_unknown · 2 codes, 1 with checks
  • NL708 Walk-In Temp/Door/Alarm/Light Modulenorlake_NL708-Door-Alarm-Light-Module-IOM_iom.pdf · 3 codes, 1 with checks
  • Modularm 75LC Multi-Monitornorlake_Modularm-75LC-Multi-Monitor-Manual_wiring-diagram.pd · 1 code, 1 with checks
  • LogiTemp Electronic Controller System (Full Gauge Version MT444)norlake_Full-Gauge-MT444-Control-Manual-Low-Temp_wiring-diag · 5 codes
KeepRite RefrigerationOpen
Manuals 3Codes 0268 symptom rows
  • Condensing Units -- Air, Water and Remote Modelskeeprite_CONDENSING-UNIT-INSTALLATION-MAINTENANCE_1068155_in · 0 codes, 131 symptom rows
  • Parallel Compressor Systems -- Air, Water and Remote Modelskeeprite_PCS-INSTALLATION-MAINTENCE_1090001_wiring-diagram.p · 0 codes, 117 symptom rows
  • keeprite_ThermoSaver-Guide_install-manual.pdfkeeprite_ThermoSaver-Guide_install-manual.pdf · 0 codes, 20 symptom rows
CopelandOpen
Manuals 3Codes 3931 with the manual's checks2 readings
  • CoreSense Communications for 20 to 40 Ton Copeland Scroll air conditioning compressorscopeland_AE-1384-R6-CoreSense-Communications-for-20-to-40-To · 12 codes, 11 with checks
  • Comfort Alert Commercial Diagnostics modulecopeland_2005ECT-191-R6-User-Manual-Comfort-Alert-for-Commer · 11 codes, 10 with checks
  • CoreSense Communications for 13 to 15 Ton Copeland Scroll air conditioning compressorscopeland_AE-1408-R2-CoreSense-Communications-for-13-to-15-To · 16 codes, 10 with checks

rooftops, splits and furnaces

CarrierOpen
Manuals 56Codes 3,6161616 with the manual's checks211 readings45 decision charts2715 symptom rows
  • AquaEdge 19DV two-stage centrifugal liquid chiller (PIC6)carrier_19DV-CLT-6T_unknown.pdf · 220 codes, 220 with checks
  • EVERGREEN 23XRV variable-speed screw chiller (Foxfire, PIC III)carrier_User-Manual-Carrier-23XRV_iom.pdf · 215 codes, 215 with checks
  • AquaEdge 19DV two-stage centrifugal liquid chiller (PIC6)carrier_19DV-CLT-5T_unknown.pdf · 211 codes, 157 with checks
  • WeatherMaker 48/50A020-060 rooftop unitscarrier_48-50A-14T_unknown.pdf · 194 codes, 88 with checks, 25 symptom rows
  • SmartVu control for 30XA/XB/XW AquaForce PUREtec chillerscarrier_10509_CONTROL_07_2024_30XAXBXBE(ZE)XBP(ZE)XWXWP(ZE)_ · 220 codes, 65 with checks
  • 48/50LC 04-06 rooftop units (ComfortLink 1.X)carrier_48-50LC-4-6-C01T_service-manual.pdf · 107 codes, 87 with checks, 87 symptom rows
  • Toshiba Carrier Super Modular Multi (e) VRF heat pump outdoor unitstoshiba-carrier_SVM-16062_service-manual.pdf · 81 codes, 81 with checks
  • AquaForce 30XV140-500 variable speed air-cooled chillers (Greenspeed, Touch Pilot)carrier_30XV-2T_unknown.pdf · 87 codes, 79 with checks
  • and 48 more manuals
TraneOpen
Manuals 88Codes 3,085372 with the manual's checks72 readings506 symptom rows
  • trane_TF-SVX007B-EN_wiring-diagram.pdftrane_TF-SVX007B-EN_wiring-diagram.pdf · 186 codes, 11 with checks, 87 symptom rows
  • trane_BAS-SVX087A-EN_installation.pdftrane_BAS-SVX087A-EN_installation.pdf · 94 codes, 61 with checks
  • Symbio 700 Controller (for Precedent Packaged Rooftop Air-Conditioners)trane-ACC-APG002.pdf · 132 codes, 16 with checks
  • Ascend ACR Series C air-cooled chillertrane_AC-SVX003E-EN_iom.pdf · 183 codes
  • IntelliPak Commercial Self-Contained Modular Seriestrane_SCXG-SVX01B-EN_IntelliPak_SelfContained_service.pdf · 51 codes, 30 with checks
  • trane_TF-SVX002C-EN_wiring-diagram.pdftrane_TF-SVX002C-EN_wiring-diagram.pdf · 100 codes, 11 with checks, 88 symptom rows
  • trane_rtaf-sintesis-RTAF-SVX001P_installation.pdftrane_rtaf-sintesis-RTAF-SVX001P_installation.pdf · 166 codes
  • Modular Self-Contained SCWM (R-454B)trane_PKG-SVX030B-EN_wiring-diagram.pdf · 43 codes, 23 with checks
  • and 80 more manuals
York (Johnson Controls)Open
Manuals 107Codes 5,8911153 with the manual's checks174 readings15 decision charts
  • Smart Equipment control, rooftop unit controller (troubleshooting guide)york-jci_Smart-Equipment-Controls-Troubleshooting_install-ma · 61 codes, 60 with checks
  • york-jci_HMH7-Service-Data-Application-Guide_install-manual.pdfyork-jci_HMH7-Service-Data-Application-Guide_install-manual. · 74 codes, 74 with checks
  • HH8 Series 18 SEER2 horizontal discharge multi-speed heat pumpyork-jci_hh8_installguide_installation.pdf · 70 codes, 70 with checks
  • york-jci_HH8-Installation-Manual_install-manual.pdfyork-jci_HH8-Installation-Manual_install-manual.pdf · 70 codes, 70 with checks
  • york-jci_HH8-Install-Manual-2-26_install-manual.pdfyork-jci_HH8-Install-Manual-2-26_install-manual.pdf · 70 codes, 70 with checks
  • york-jci_100.41-O3_installation.pdfyork-jci_100.41-O3_installation.pdf · 78 codes, 40 with checks
  • york-jci_160.44-SUM3_unknown.pdfyork-jci_160.44-SUM3_unknown.pdf · 28 codes, 28 with checks
  • york-jci_160.46-O1_unknown.pdfyork-jci_160.46-O1_unknown.pdf · 41 codes, 24 with checks
  • and 99 more manuals
LennoxOpen
Manuals 6Codes 26024 with the manual's checks5 readings3 decision charts
  • VRF outdoor units (R410A) service manual -- VPC/VRC S4M-4 and L4M-4 seriesAC-00356E (1).pdf · 154 codes, 8 with checks
  • lennox_LENNOX-RESIDENTIAL-COMMUNICATING-SYSTEMS_wiring-diagram.pdflennox_LENNOX-RESIDENTIAL-COMMUNICATING-SYSTEMS_wiring-diagr · 13 codes, 13 with checks
  • DB68-13747A-00 (1).pdfDB68-13747A-00 (1).pdf · 5 codes, 3 with checks
  • 877a881ca9ab1544766e0de77a0707e0be4d98d9eb0b2b78c3a75525b498dac0.pdf877a881ca9ab1544766e0de77a0707e0be4d98d9eb0b2b78c3a75525b498 · 0 codes
  • VPB Heat Pump VRF outdoor units, installation/operation instructions507884-06+Final.pdf · 44 codes
  • VRB Heat Recovery VRF outdoor units, installation/operation instructions507885-05+Final.pdf · 44 codes
Lennox ResidentialOpen
Manuals 1Codes 14796 with the manual's checks14 readings
  • Lennox Smart Thermostat communicating-system alert codeslennox_LENNOX-RESIDENTIAL-COMMUNICATING-SYSTEMS_wiring-diagr · 147 codes, 96 with checks
GoodmanOpen
Manuals 6Codes 9434 with the manual's checks3 readings
  • daikin_r32-sm-rs6200301r1-single-stage-splits_unknown.pdfdaikin_r32-sm-rs6200301r1-single-stage-splits_unknown.pdf · 26 codes, 15 with checks
  • daikin_ss-gpgm3_wiring-diagram.pdfdaikin_ss-gpgm3_wiring-diagram.pdf · 8 codes, 7 with checks
  • ss-gphh3-r32.pdfss-gphh3-r32.pdf · 8 codes, 6 with checks
  • daikin_ss-gphh5-r32_wiring-diagram.pdfdaikin_ss-gphh5-r32_wiring-diagram.pdf · 8 codes, 6 with checks
  • daikin_ss-gm9s96-u_install-manual.pdfdaikin_ss-gm9s96-u_install-manual.pdf · 22 codes
  • daikin_ss-gr9s80_gd9s80-r32_wiring-diagram.pdfdaikin_ss-gr9s80_gd9s80-r32_wiring-diagram.pdf · 22 codes
ICPOpen
Manuals 89Codes 1,525643 with the manual's checks52 readings
  • 42108540002.pdf42108540002.pdf · 40 codes, 15 with checks
  • 42108540003.pdf42108540003.pdf · 40 codes, 15 with checks
  • 42108540004.pdf42108540004.pdf · 40 codes, 15 with checks
  • 44001452100.pdf44001452100.pdf · 17 codes, 12 with checks
  • 44001452101.pdf44001452101.pdf · 17 codes, 12 with checks
  • 44004420103_ICP_24620.pdf44004420103_ICP_24620.pdf · 17 codes, 12 with checks
  • 44004470000_ICP_25862.pdf44004470000_ICP_25862.pdf · 17 codes, 12 with checks
  • 44004470001_ICP_27381.pdf44004470001_ICP_27381.pdf · 17 codes, 12 with checks
  • and 81 more manuals
AAONOpen
Manuals 6Codes 539 with the manual's checks1 readings
  • M2 Series modular indoor air handling units & self-contained unitsaaon_M2_IOM_240828_410A_iom.pdf · 6 codes, 6 with checks
  • AAON RN Series packaged rooftop units (R-410A), 6-30 tonaaon_RN_IOM_240826_410a_iom-2.pdf · 14 codes, 3 with checks
  • H3 Series horizontal indoor air handling unitsaaon_H3_IOM_240828_410A_iom.pdf · 11 codes
  • AAON RN Series packaged rooftop units, heat pumps, & outdoor air handling units (R-454B), 6-70 tonaaon_RN-Series-IOM-20251210_iom-2.pdf · 6 codes
  • RN Series E Cabinet packaged rooftop units and outdoor air handling unitsaaon_RNE_IOM_240923_-454B_wiring-diagram-2.pdf · 7 codes
  • RQ Series packaged rooftop units, heat pumps, and outdoor air handling unitsaaon_RQ-Series-IOM-20251210_iom-2.pdf · 9 codes
First Co.Open
Manuals 9Codes 1625 with the manual's checks
  • Fresh-Pak EFE/EFW eco series space-constrained fan coil w/ hot water or electric heat & energy recovery ventilationfirst-co_IOM8511-Fresh-Pak-EPE-EFW-3_installation.pdf · 29 codes
  • Fresh Pak HP (EPE) eco series space-constrained heat pump w/ energy recovery ventilationfirst-co_IOM8510-Fresh-Pak-HP-3_installation.pdf · 29 codes
  • Fresh-Pak EFE/EFW space-constrained unit w/ energy recovery ventilation (prior-generation manual)first-co_IOM8501-Fresh-Pak-IOM_installation.pdf · 29 codes
  • HCXQ*V, HCXR*V, HCXW*V multi-position fan coil units (variable-speed motor)IOM6003-HCXQV-HCXRV-HCXWV.pdf · 5 codes, 1 with checks
  • *CD*Q, *CD*QX, *CD*QR, *CD*QXR series ceiling-mounted fan coil unitsIOM4603-CDXQ-CDXQX-CDXQR-CDXQXR.pdf · 5 codes, 1 with checks
  • HCXQ & HCXR multi-position fan coil unitsIOM6006-HCXQ-HCXR.pdf · 5 codes, 1 with checks
  • CLX, CLXW, CLXQ, CLP, CLPW, CLPQ vertical fan coil unitsIOM7301-CLX-CLXW-CLXQ-CLP-CLPW-CLPQ-1.pdf · 5 codes, 1 with checks
  • HCXW multi-position fan coil unitIOM6005-HCXW.pdf · 5 codes, 1 with checks
  • and 1 more manuals
BardOpen
Manuals 1Codes 41 with the manual's checks
  • 11EER WA Series Wall Mount Air Conditionerbard_2100-803(C)_install-manual.pdf · 4 codes, 1 with checks
ReznorOpen
Manuals 1Codes 30
  • reznor_c715e89505cc57d6c26cb0cb18444b4aa71e4e5651c26caaa91e664b82a6_installation.pdfreznor_c715e89505cc57d6c26cb0cb18444b4aa71e4e5651c26caaa91e6 · 30 codes
WeatherKingOpen
Manuals 1Codes 10
  • rheem_a23b9258-5036-4fa8-9bd3-429c894d4f5e_install.pdfrheem_a23b9258-5036-4fa8-9bd3-429c894d4f5e_install.pdf · 10 codes
ChoiceOpen
Manuals 1Codes 33 with the manual's checks
  • manitowoc_HT_IOM_040008806_en_iom.pdfmanitowoc_HT_IOM_040008806_en_iom.pdf · 3 codes, 3 with checks

VRF and mini-splits

DaikinOpen
Manuals 67Codes 2,0271005 with the manual's checks547 readings701 decision charts10 symptom rows
  • VRV Aurora RELQ-TA/TB / VRV IV REYQ-TA heat recoverydaikin_SM-RELQ_TB_SiUS371703EE_service-manual.pdf · 94 codes, 77 with checks
  • VRV REYQ-XA heat recoverydaikin_SM-REYQ_XA-(SiUS371901EB)_service-manual.pdf · 91 codes, 74 with checks
  • VRV REYQ-XA(B) heat recovery outdoor unitsdaikin_SM-REYQ_XATJB-SiUS371901ED_wiring-diagram.pdf · 91 codes, 74 with checks
  • VRV REYQ-XA / REYQ-XB heat recoverydaikin_sm-reyq_xb_sius371901ee_service-manual.pdf · 93 codes, 74 with checks
  • VRV RXYQ-AA heat pump outdoor unitsdaikin_sm-sius342303ea_rxyq_aa_service-manual.pdf · 88 codes, 67 with checks
  • VRV REYQ-XA heat recovery outdoor units (earlier revision)daikin_sm-reyq_xa-(sius371901e)_service-manual.pdf · 91 codes, 68 with checks
  • VRV REYQ-AA heat recovery outdoor unitsdaikin_sm-reyq_a-(sius372201e)_service-manual.pdf · 90 codes, 63 with checks
  • VRV Emerion REYQ-AA heat recoverydaikin_SiUS372201EB_service.pdf · 92 codes, 65 with checks
  • and 59 more manuals
Daikin ResidentialOpen
Manuals 1Codes 1515 with the manual's checks2 readings
  • Daikin Altherma Quick Startup & Reference Guide 2.4 11.13.pdfDaikin Altherma Quick Startup & Reference Guide 2.4 11.13.pd · 15 codes, 15 with checks
Daikin Residential DuctedOpen
Manuals 3Codes 2114 with the manual's checks2 readings
  • daikin_im-iod_install-manual-4.pdfdaikin_im-iod_install-manual-4.pdf · 7 codes, 7 with checks
  • daikin_im-iod_install-manual-5.pdfdaikin_im-iod_install-manual-5.pdf · 7 codes, 7 with checks
  • daikin_r32-sm-rsd6512301-r32-packaged_unknown.pdfdaikin_r32-sm-rsd6512301-r32-packaged_unknown.pdf · 7 codes
Mitsubishi ElectricOpen
Manuals 59Codes 3,1652677 with the manual's checks704 readings5 decision charts429 symptom rows
  • City Multi PUHY-P (Y)KMU-A / -U heat pumpmitsubishi_M_PUHY-P~T(Y)(S)KMU-A(U)_SERVICE_HWE1115C_2016-04 · 137 codes, 129 with checks
  • City Multi PURY-P (Y)KMU-A / -U heat recoverymitsubishi_HWE1116G_service-2.pdf · 127 codes, 119 with checks
  • mitsubishi_M_PURY-P~T(Y)(S)LMU-A_SERVICE_HWE1409B_2017-11_install-manual.pdfmitsubishi_M_PURY-P~T(Y)(S)LMU-A_SERVICE_HWE1409B_2017-11_in · 108 codes, 108 with checks, 38 symptom rows
  • City Multi PURY-P / EP T(Y)NU / SNU-A1 heat recoverymitsubishi_M_PURY-TNU_TSNU_YNU_YSNU-A1_SERVICE_install-manua · 96 codes, 96 with checks, 44 symptom rows
  • City Multi PURY-HP T(Y)NU-A/A1 high-performance heat recoverymitsubishi_M_PURY-HP_YNU_TNU-A_SERVICE_install-manual.pdf · 96 codes, 96 with checks, 44 symptom rows
  • City Multi PURY-HP T(Y)NU-A/A1 high-performance heat recoverymitsubishi_M_PURY-HP-A1_SERVICE_install-manual.pdf · 96 codes, 96 with checks, 44 symptom rows
  • mitsubishi_M_PUHY-P~T(Y)(S)LMU-A_SERVICE_HWE14080_2015-03_install-manual.pdfmitsubishi_M_PUHY-P~T(Y)(S)LMU-A_SERVICE_HWE14080_2015-03_in · 96 codes, 96 with checks, 37 symptom rows
  • City Multi PURY-P (Y)JMU-A heat recoverymitsubishi_M_PURY-P~T(Y)(S)JMU-A_SERVICE_HWE0913A_2013-09_in · 107 codes, 97 with checks
  • and 51 more manuals
LG Multi VOpen
Manuals 65Codes 1,862358 with the manual's checks204 readings601 decision charts340 symptom rows
  • Multi V 5 outdoor units (ARUM series)lg_SM_MultiV_5_OutdoorUnits_service-manual.pdf · 309 codes, 146 with checks
  • lg_SM-MultiV-IV-Air-Outdoor-Units_service-manual.pdflg_SM-MultiV-IV-Air-Outdoor-Units_service-manual.pdf · 68 codes, 25 with checks
  • lg_sm-multiv-iv-air-outdoor-units-4-15_20150414080917_service-manual.pdflg_sm-multiv-iv-air-outdoor-units-4-15_20150414080917_servic · 78 codes, 24 with checks
  • mfl68280201_svc_multifodu-idu.pdfmfl68280201_svc_multifodu-idu.pdf · 63 codes, 46 with checks
  • lg_SM_MultiV_S_OutdoorUnits_service-manual.pdflg_SM_MultiV_S_OutdoorUnits_service-manual.pdf · 49 codes, 17 with checks
  • General_Service_Manual_MFL41161610_All_SZ.pdfGeneral_Service_Manual_MFL41161610_All_SZ.pdf · 33 codes, 33 with checks
  • General_Service_Manual_MFL62542020.pdfGeneral_Service_Manual_MFL62542020.pdf · 28 codes, 24 with checks
  • Multi V i outdoor units (ARUM series, R32)lg_MFL71986707_service-manual.pdf · 54 codes, 2 with checks, 16 symptom rows
  • and 57 more manuals
SamsungOpen
Manuals 108Codes 275157 with the manual's checks266 readings71 decision charts
  • samsung_DVMchiller_SERVICEmanual_AG010KSVAFH_AC-00160E_1_service-manual.pdfsamsung_DVMchiller_SERVICEmanual_AG010KSVAFH_AC-00160E_1_ser · 119 codes, 14 with checks
  • System Air Conditioner outdoor units (AM series DVM)samsung_Manual_AM_MXWANR_wiring-diagram.pdf · 22 codes, 14 with checks
  • samsung_SG-E396DCLinkSensorErrorFanController2FINAL_wiring-diagram.pdfsamsung_SG-E396DCLinkSensorErrorFanController2FINAL_wiring-d · 2 codes, 2 with checks
  • samsung_SG-E466InverterPBA1LinkVoltageIncorrectFINAL_wiring-diagram.pdfsamsung_SG-E466InverterPBA1LinkVoltageIncorrectFINAL_wiring- · 2 codes, 2 with checks
  • samsung_SG-E469InverterPBA1LinkVoltageSensingErrorFINAL_wiring-diagram.pdfsamsung_SG-E469InverterPBA1LinkVoltageSensingErrorFINAL_wiri · 2 codes, 2 with checks
  • samsung_SG-E496LinkVoltageSensorErrorFanPCBFINAL_wiring-diagram.pdfsamsung_SG-E496LinkVoltageSensorErrorFanPCBFINAL_wiring-diag · 2 codes, 2 with checks
  • Service Guide E101/C101 -- RAC, CAC, FJM (page 1); DVM, ECO, WATER (page 2)samsung_Service_Guide_E101_C101_Indoor_Unit_Communication_Er · 2 codes, 2 with checks
  • Service Guide E396 -- DVM, CHILLERsamsung_Service_Guide_E396_DC_Link_Sensor_Error_Fan_Controll · 2 codes, 2 with checks
  • and 100 more manuals
Fujitsu GeneralOpen
Manuals 18Codes 519336 with the manual's checks100 readings373 symptom rows
  • Airstage VU-V VRF outdoor unitsfujitsu_Airstage-VRF-Service-Manual_service-manual.pdf · 147 codes, 147 with checks
  • Airstage VR-II heat recovery VRF outdoor unitsfujitsu_44f63a96-8b53-425d-a6bb-1da4aea9ff29_service.pdf · 78 codes, 78 with checks
  • Airstage J-II small VRF outdoor unitsfujitsu_Airstage-LonWorks-CableChange-Bulletin001-2016-03_se · 60 codes, 58 with checks
  • Airstage J-IIS small VRF outdoor unitsfujitsu_6d95f4cd-1605-44e3-99f1-bc82e30cd418_service.pdf · 53 codes, 53 with checks
  • Airstage wall-mounted air conditioner, operating manual (generic, cross-model)fujitsu_pdf-fcus-asuh07-15lpas-01_parts-manual.pdf · 0 codes, 39 symptom rows
  • Airstage wall-mounted air conditioner, operating manual (generic, cross-model)fujitsu_pdf-fcus-asuh18-24lpas-01_parts-manual.pdf · 0 codes, 39 symptom rows
  • fujitsu_pdf-fcus-acuh07-18luas1-01_parts-manual.pdffujitsu_pdf-fcus-acuh07-18luas1-01_parts-manual.pdf · 0 codes, 37 symptom rows
  • fujitsu_pdf-fcus-acuh09-18luas1-01_parts-manual.pdffujitsu_pdf-fcus-acuh09-18luas1-01_parts-manual.pdf · 0 codes, 37 symptom rows
  • and 10 more manuals
Gree VRFOpen
Manuals 3Codes 27832 with the manual's checks4 readings
  • Ultra Heat GMV6 Mini DC Inverter VRF (Nh high-capacity line)gree_gmv6-r32-ultra-heat-pump-service-manual_service-manual. · 257 codes, 32 with checks
  • GMV5 Multi Variable Air Conditioner indoor units (all types)gree_gmv5-indoor-units-service-manual_service-manual.pdf · 19 codes
  • Ultra Heat GMV6 Mini DC Inverter VRF, 208-230Vgree_gmv6-ultra-heat-mini-heat-pump-208-230v-service-manual_ · 2 codes
GreeOpen
Manuals 19Codes 45412 with the manual's checks22 readings
  • Livo Gen3 outdoor unit, 9k-24k 230Vgree_livo-gen3-service-manual-9k-24k-230v-a_service-manual.p · 27 codes, 6 with checks
  • gree_multi-r32-installation-service-manual-a_service-manual.pdfgree_multi-r32-installation-service-manual-a_service-manual. · 54 codes
  • Multi Eco R32 outdoor unitgree_multi-eco-r32-service-manual-a_service-manual.pdf · 53 codes, 6 with checks
  • gree_flexx-service-manual-ac-bh_service-manual.pdfgree_flexx-service-manual-ac-bh_service-manual.pdf · 26 codes
  • gree_flexx-service-manual-a_service-manual.pdfgree_flexx-service-manual-a_service-manual.pdf · 26 codes
  • One-way Cassette Type Indoor Unitgree_1-way-cassette-user-manual_wiring-diagram.pdf · 0 codes
  • Fresh Air Series Indoor Unitgree_100-fresh-air-processing-unit-user-manual_wiring-diagra · 0 codes
  • Two-way Cassette Type Indoor Unitgree_2-way-cassette-user-manual_wiring-diagram.pdf · 0 codes
  • and 11 more manuals
Toshiba CarrierOpen
Manuals 1Codes 2424 with the manual's checks2 readings
  • Toshiba Carrier Super Modular Multi (e) VRF heat pump outdoor unitstoshiba-carrier_SVM-16062_service-manual.pdf · 24 codes, 24 with checks
Mitsubishi ResidentialOpen
Manuals 38Codes 939460 with the manual's checks75 readings276 decision charts58 symptom rows
  • mitsubishi_OCH870A_service-manual.pdfmitsubishi_OCH870A_service-manual.pdf · 45 codes, 45 with checks, 8 symptom rows
  • mitsubishi_OCH871B_service.pdfmitsubishi_OCH871B_service.pdf · 45 codes, 45 with checks
  • mitsubishi_OCHT764A_service-manual.pdfmitsubishi_OCHT764A_service-manual.pdf · 42 codes, 42 with checks
  • mitsubishi_OCH636_service.pdfmitsubishi_OCH636_service.pdf · 42 codes, 42 with checks
  • mitsubishi_T_TRUZH0-HA50NA_SERVICE_OCHT607_09-19_service-manual.pdfmitsubishi_T_TRUZH0-HA50NA_SERVICE_OCHT607_09-19_service-man · 38 codes, 38 with checks, 8 symptom rows
  • mitsubishi_OCH825_service.pdfmitsubishi_OCH825_service.pdf · 37 codes, 37 with checks, 8 symptom rows
  • mitsubishi_OCH754_service-2.pdfmitsubishi_OCH754_service-2.pdf · 37 codes, 37 with checks, 8 symptom rows
  • P-Series PUZ-A / PUY-A NKA8/NHA8 outdoor units (R410A)mitsubishi_OCH764B_service-manual.pdf · 35 codes, 28 with checks
  • and 30 more manuals
MRCOOLOpen
Manuals 3Codes 2714 with the manual's checks
  • Advantage Series split systemmrcool_mc-adv-5-im-en-01_install-manual.pdf · 13 codes, 13 with checks
  • DIY Series multi-zone mini-split systemmrcool_mc-diy-5-mz-im-um-en-01_install-manual.pdf · 1 code, 1 with checks
  • Universal Series split systemmrcool_mc-uni-5-im-um-en_install-manual.pdf · 13 codes
HitachiOpen
Manuals 1Codes 16
  • Split Unit Inverter Air Conditioner (generic system overview)hitachi_65MP3199_01_install-manual.pdf · 16 codes

water heaters and boilers

Bradford WhiteOpen
Manuals 16Codes 353275 with the manual's checks36 readings
  • Infiniti K/L Series tankless (condensing) gas water heaterbradfordwhite_238-53328-00_Current_service-manual.pdf · 40 codes, 38 with checks
  • Infiniti GS Series wall-mounted modulating gas condensing tanklessbradfordwhite_238-54627-00_Current_wiring-diagram.pdf · 30 codes, 30 with checks
  • RTG 199 HE indoor tankless (temperature modulated)bradfordwhite_238-50793-00_B_wiring-diagram.pdf · 29 codes, 29 with checks
  • Flammable Vapor Ignition Resistant direct vent water heaters (Defender Safety System)bradfordwhite_238-51636-00_Current_service-manual.pdf · 24 codes, 23 with checks
  • High EF atmospheric vent gas water heater (Defender Safety System)bradfordwhite_238-51617-00_Current_service-manual.pdf · 18 codes, 18 with checks
  • Flammable Vapor Ignition Resistant water heaters (Defender Safety System)bradfordwhite_238-51542-00_Current_service-manual.pdf · 17 codes, 17 with checks
  • KwickShot tankless electric water heatersbradfordwhite_238-54367-00_Current_install-manual.pdf · 17 codes, 14 with checks
  • EverHot condensing tankless gas water heater (interior)bradfordwhite_238-48793-00_C_parts-manual.pdf · 17 codes, 17 with checks
  • and 8 more manuals
Bradford White TanklessOpen
Manuals 5Codes 5858 with the manual's checks20 readings
  • Infiniti Tankless K-Series (outdoor)bradfordwhite-tankless_6-720-813-642_Current_wiring-diagram. · 41 codes, 41 with checks
  • EverHot condensing tankless gas water heater (interior)bradfordwhite_238-48793-00_C_parts-manual.pdf · 17 codes, 17 with checks
  • bradfordwhite_238-43141-00_A_troubleshooting.pdfbradfordwhite_238-43141-00_A_troubleshooting.pdf · 0 codes
  • bradfordwhite_238-43142-00_A_troubleshooting.pdfbradfordwhite_238-43142-00_A_troubleshooting.pdf · 0 codes
  • bradfordwhite_238-43144-00_A_troubleshooting.pdfbradfordwhite_238-43144-00_A_troubleshooting.pdf · 0 codes
Bradford White AeroThermOpen
Manuals 1Codes 27
  • AeroTherm heat pump water heater (RE2H)bradfordwhite_238-52169-00_Current_parts-manual.pdf · 27 codes
Bradford White BruteOpen
Manuals 4Codes 256215 with the manual's checks5 readings
  • Brute modulating boiler (Bradford White-badged)lochinvar_1258_Current_wiring-diagram.pdf · 145 codes, 138 with checks
  • lochinvar_1487_Current_install-manual.pdflochinvar_1487_Current_install-manual.pdf · 37 codes, 34 with checks
  • Brute Elite 125 wall-mounted modulating boiler / combi (Bradford White-badged)lochinvar_1281_D_wiring-diagram.pdf · 43 codes, 43 with checks
  • Brute LX wall-mounted modulating boiler / combi (Bradford White-badged)lochinvar_1295_Current_wiring-diagram.pdf · 31 codes
RinnaiOpen
Manuals 9Codes 198194 with the manual's checks51 readings
  • I-SERIES Plus boiler diagnostic codesrinnai_800000375-Troubleshooting-I-Series-Plus-Diagnostic-Co · 42 codes, 40 with checks
  • REHP Series electric heat pump water heaterrinnai_100000867(04)-Electric-Heat-Pump-Water-Heater-Manual- · 23 codes, 23 with checks
  • rinnai_100000467-N-Series-Residential-Condensing-Installation-and-O_install-manual.pdfrinnai_100000467-N-Series-Residential-Condensing-Installatio · 27 codes, 27 with checks
  • rinnai_100000504-N-Series-Commercial-Condensing-Installation-and-Op_install-manual.pdfrinnai_100000504-N-Series-Commercial-Condensing-Installation · 27 codes, 27 with checks
  • Demand Duo R-Series (REC) automatic circulating tank water heaterrinnai_100000808-Demand-Duo-R-Series-(REC)-Installation-and- · 24 codes, 24 with checks
  • M-Series condensing combi boilerrinnai_800000063(01)-M-Series-Condensing-Combi-Boiler-Instal · 18 codes, 18 with checks
  • Direct vent tankless water heater (RL/RLX i/e Series)rinnai_100000244-VC-Installation-and-Operation-Manual_wiring · 18 codes, 18 with checks
  • Demand Duo R-Series automatic circulating tank water heaterrinnai_100000675(01)-Demand-Duo-R-Series-Installation-and-Op · 17 codes, 16 with checks
  • and 1 more manuals
Rinnai TanklessOpen
Manuals 1Codes 2525 with the manual's checks1 readings
  • Sensei N-Series residential condensing tankless water heaterrinnai_100000467-N-Series-Residential-Condensing-Installatio · 25 codes, 25 with checks
Rinnai BoilersOpen
Manuals 8Codes 307271 with the manual's checks115 readings
  • I-SERIES Plus boiler diagnostic codesrinnai_800000375-Troubleshooting-I-Series-Plus-Diagnostic-Co · 44 codes, 42 with checks
  • rinnai_800000010-Boiler-Installation-Manual-Q-Series_install-manual.pdfrinnai_800000010-Boiler-Installation-Manual-Q-Series_install · 41 codes, 41 with checks
  • rinnai_800000039-Boiler-Installation-Manual-QP-Series_install-manual.pdfrinnai_800000039-Boiler-Installation-Manual-QP-Series_instal · 41 codes, 41 with checks
  • rinnai_Boiler-Installation-Manual-E50C_install-manual.pdfrinnai_Boiler-Installation-Manual-E50C_install-manual.pdf · 39 codes, 39 with checks
  • rinnai_8W516007-Installation-manual-E-Combi-Series-ENG_FR-V0117_01_install-manual.pdfrinnai_8W516007-Installation-manual-E-Combi-Series-ENG_FR-V0 · 37 codes, 37 with checks
  • rinnai_800000056-Installation-manual-E-Combi-Series-V0116_install-manual.pdfrinnai_800000056-Installation-manual-E-Combi-Series-V0116_in · 37 codes, 37 with checks
  • rinnai_800000111-I-Series-Condensing-Combi-Boiler-Installation-and-_install-manual.pdfrinnai_800000111-I-Series-Condensing-Combi-Boiler-Installati · 34 codes, 34 with checks
  • rinnai_800000114-I-Series-Condensing-Combi-Boiler-User-Manual_install-manual.pdfrinnai_800000114-I-Series-Condensing-Combi-Boiler-User-Manua · 34 codes
Rinnai Heat Pump Water HeatersOpen
Manuals 1Codes 1616 with the manual's checks
  • REHP Series electric heat pump water heaterrinnai_100000867(04)-Electric-Heat-Pump-Water-Heater-Manual- · 16 codes, 16 with checks
AosmithOpen
Manuals 1Codes 011 symptom rows
  • Commercial gas water heater (A/S/M) TX-199aosmith_100298175_wiring-diagram.pdf · 0 codes, 11 symptom rows
A. O. Smith CommercialOpen
Manuals 8Codes 147109 with the manual's checks40 readings
  • High-Efficiency Commercial gas water heater (Flex/HLW)aosmith_100394452_wiring-diagram.pdf · 43 codes, 42 with checks
  • Burkay gas-fired commercial copper boileraosmith_100077928_wiring-diagram.pdf · 27 codes, 19 with checks
  • Commercial electric heat pump water heateraosmith_100364933_wiring-diagram.pdf · 18 codes, 18 with checks
  • Commercial gas water heater, Power Vented with Hot Surface Ignitionaosmith_100282340_parts-manual.pdf · 13 codes, 13 with checks
  • Commercial gas water heater, Power Direct Vent with Hot Surface Ignition (BPD)aosmith_331603_wiring-diagram.pdf · 17 codes, 12 with checks
  • Genesis commercial gas water heater/boileraosmith_2000005371_service-manual.pdf · 14 codes, 5 with checks
  • Commercial gas water heater (BTR, MasterFit)aosmith_318230_wiring-diagram.pdf · 9 codes
  • Commercial gas water heater, Ultra Low NOx Series 200 (BTL)aosmith_327502_wiring-diagram.pdf · 6 codes
A. O. Smith VoltexOpen
Manuals 1Codes 2926 with the manual's checks3 readings
  • Voltex hybrid electric heat pump water heateraosmith_100379654_wiring-diagram.pdf · 29 codes, 26 with checks
RheemOpen
Manuals 2Codes 4646 with the manual's checks18 readings
  • Electric Residential Hybrid water heater (heat pump)rheem_38C86878-9974-4171-B553-B85163859EFC_wiring-diagram.pd · 40 codes, 40 with checks
  • Electric Residential water heaters with Electronic Controlrheem_2DBFCD91-3EBD-4C08-BD0A-2FA67C7A8D07_wiring-diagram.pd · 6 codes, 6 with checks
Rheem ProTerraOpen
Manuals 1Codes 4040 with the manual's checks14 readings
  • ProTerra hybrid electric heat pump water heaterrheem_38C86878-9974-4171-B553-B85163859EFC_wiring-diagram.pd · 40 codes, 40 with checks
LaarsOpen
Manuals 9Codes 779735 with the manual's checks8 readings3 symptom rows
  • 1291_NeoTherm_Residential_Service_Manual.pdf1291_NeoTherm_Residential_Service_Manual.pdf · 148 codes, 140 with checks
  • 1292-NH.pdf1292-NH.pdf · 148 codes, 140 with checks
  • 1255B-NH.pdf1255B-NH.pdf · 146 codes, 138 with checks
  • 1252B-NH1.pdf1252B-NH1.pdf · 144 codes, 137 with checks
  • 1330F-NH1.pdf1330F-NH1.pdf · 96 codes, 87 with checks
  • 1230E-NH.pdf1230E-NH.pdf · 43 codes, 40 with checks, 3 symptom rows
  • 1318D-NH1.pdf1318D-NH1.pdf · 27 codes, 27 with checks
  • 1342E-NH.pdf1342E-NH.pdf · 25 codes, 24 with checks
  • and 1 more manuals
U.S. BoilerOpen
Manuals 4Codes 11759 with the manual's checks6 readings21 symptom rows
  • MPO-IQ-IO-8262015-Present-Troubleshooting.pdfMPO-IQ-IO-8262015-Present-Troubleshooting.pdf · 33 codes, 27 with checks
  • K2FT_Past-Present_Repair_Troubleshooting.pdfK2FT_Past-Present_Repair_Troubleshooting.pdf · 38 codes, 13 with checks, 9 symptom rows
  • 104806-01-Alpine-Comm-w.pdf104806-01-Alpine-Comm-w.pdf · 31 codes, 7 with checks, 9 symptom rows
  • X-2_Past-Present_Troubleshooting.pdfX-2_Past-Present_Troubleshooting.pdf · 15 codes, 12 with checks, 3 symptom rows
Honeywell SOLAOpen
Manuals 1Codes 698163 with the manual's checks2 readings
  • R7910A SOLA HC (Hydronic Control) / R7911 SOLA SC (Steam Control) boiler control systemhoneywell_R7910A1001_unknown.pdf · 698 codes, 163 with checks
AERCOOpen
Manuals 6Codes 369162 with the manual's checks42 readings
  • Innovation water heaters with Edge [ii] Controller, models INN 1600 & INN 2000aerco_67ebd0e62eb7830750bfb6f0f37a73319185c300bf9795ae47a538 · 52 codes, 51 with checks
  • Benchmark boilers with Edge [ii] Controller, models 750 through 6000aerco_Benchmark®-Boilers-with_service.pdf · 43 codes, 42 with checks
  • Benchmark 1500/2000 natural gas modulating & condensing hot water boilersaerco_BENCHMARK_installation.pdf · 69 codes, 34 with checks
  • Innovation natural gas & propane modulating, condensing water heaters, 600-1350 MBHaerco_fc153f39acfdd103e4d12ef4cacd3d9ab229649736250a35098dda · 68 codes, 32 with checks
  • Edge Controller for Benchmark and CFR boilers (controller operation manual)aerco_edge-controller-for-benchmark-and-cfr_unknown.pdf · 132 codes, 3 with checks
  • Boiler Management System (BMS) -- multi-boiler sequencing controlleraerco_BOILER-MANAGEMENT-SYSTEM_operation.pdf · 5 codes
ViessmannOpen
Manuals 5Codes 408406 with the manual's checks35 readings34 symptom rows
  • vitodens_200-b2he_si.pdfvitodens_200-b2he_si.pdf · 140 codes, 139 with checks
  • vitodens_100-b1he_is.pdfvitodens_100-b1he_is.pdf · 101 codes, 100 with checks
  • Vitodens_200-B2HA_112-150_si.pdfVitodens_200-B2HA_112-150_si.pdf · 79 codes, 79 with checks
  • vitodens_200-b2hb_19-35_si.pdfvitodens_200-b2hb_19-35_si.pdf · 78 codes, 78 with checks
  • vitodens_200_troubleshooting.pdfvitodens_200_troubleshooting.pdf · 10 codes, 10 with checks, 34 symptom rows
Weil-McLainOpen
Manuals 4Codes 138135 with the manual's checks25 readings11 symptom rows
  • Evergreen-Series-2-Boiler-Manual-0526.pdfEvergreen-Series-2-Boiler-Manual-0526.pdf · 40 codes, 39 with checks, 3 symptom rows
  • SVF-500-600-Boiler-Manual-550100273_1224-Web-Quality.pdfSVF-500-600-Boiler-Manual-550100273_1224-Web-Quality.pdf · 40 codes, 39 with checks, 3 symptom rows
  • ECOTecS2-BoilerManual-0924.pdfECOTecS2-BoilerManual-0924.pdf · 39 codes, 38 with checks, 3 symptom rows
  • Ultra-Boiler-Manual-0723-Web-Vrersion.pdfUltra-Boiler-Manual-0723-Web-Vrersion.pdf · 19 codes, 19 with checks, 2 symptom rows

chillers and applied

Daikin AppliedOpen
Manuals 29Codes 1,46994 with the manual's checks12 readings1 symptom rows
  • MicroTech Unit Controller manual for Rebel commercial packaged rooftop systems (model DPS)daikin-applied_OM-1382-2_pub-12-30-2025_wiring-diagram.pdf · 70 codes, 36 with checks
  • MicroTech Unit Controller manual for Rebel Applied rooftop systems (model DPSA, DHSA, DAHA)daikin-applied_OM-1373-1_pub-11-7-24_wiring-diagram.pdf · 63 codes
  • Rebel Applied packaged rooftopdaikin-applied_IM-1384-2_pub-2-3-2026_wiring-diagram.pdf · 22 codes, 14 with checks
  • Rebel Applied packaged rooftopdaikin-applied_IM-1384-3_wiring-diagram.pdf · 22 codes, 14 with checks
  • Trailblazer air-to-water scroll heat pump (model EWYQ, EWYT)daikin-applied_IOM1358-1_iom.pdf · 12 codes, 12 with checks
  • SmartSource large capacity vertical water source heat pump (model WSLV)daikin-applied_IM-1375-1-smart-source-wshp-vertical_wiring-d · 14 codes, 7 with checks
  • daikin-applied_OM-1357-4_wiring-diagram.pdfdaikin-applied_OM-1357-4_wiring-diagram.pdf · 41 codes
  • Navigator WWV/TWV water-cooled screw chillersdaikin-applied_IOM1264_iom.pdf · 40 codes
  • and 21 more manuals
ClimateMasterOpen
Manuals 1Codes 1411 with the manual's checks
  • DXM2.5 Digital Heat Pump Controller (Advanced Communicating Controls)climatemaster_DXM2.5-ADVANCED-COMMUNICATING-CONTROLS_wiring- · 14 codes, 11 with checks
EubankOpen
Manuals 1Codes 5
  • 11+ EER Vertical Packaged Wall Mount Air Conditionerseubank_Eubank-EAA1020A-1060A-EGA1072A-Wall-Mount-AC_product- · 5 codes
BAC (Baltimore Aircoil)Open
Manuals 2Codes 6059 with the manual's checks1 readings
  • TrilliumSeries Adiabatic Cooler - TRFbac_RGOMTRF303_R5.0_parts-manual.pdf · 34 codes, 34 with checks
  • Vertex Evaporative Condenserbac_RGOMVRCA01_20250529_0_parts-manual.pdf · 26 codes, 25 with checks
Vertiv (Liebert)Open
Manuals 37Codes 2,22816 with the manual's checks4 readings
  • vertiv_liebert-icom-installeruser-guide-intelligent-communication-a_installation.pdfvertiv_liebert-icom-installeruser-guide-intelligent-communic · 255 codes
  • Liebert XDU070 coolant distribution unit (liquid to air)vertiv_liebert-xdu070-operating-and-maintenance-guide-sl-711 · 50 codes
  • CoolChip CDU 121 coolant distribution unitvertiv_80278-cdu-121-operation-maintenance-reva-10-25-locked · 38 codes
  • CoolChip CDU 600 coolant distribution unitvertiv_coolchip-cdu-600-operation-and-maintenance-guide-sl-0 · 35 codes
  • vertiv_coolchip-cdu-121-application-and-planning-guide-sl_installation.pdfvertiv_coolchip-cdu-121-application-and-planning-guide-sl_in · 8 codes, 8 with checks
  • CoolChip CDU100kW coolant distribution unitvertiv_coolchip-cdu100-operation-and-maintenance-manual-sl-7 · 19 codes
  • vertiv_liebert-pdx-pcw-thermal-management-system-user-manual_01_installation.pdfvertiv_liebert-pdx-pcw-thermal-management-system-user-manual · 5 codes, 5 with checks
  • CoolChip CDU070 coolant distribution unit (liquid to air)vertiv_coolchip-cdu-70-operation-and-maintenance-guide-sl-80 · 7 codes
  • and 29 more manuals
StulzOpen
Manuals 3Codes 3720 symptom rows
  • stulz_Ultrasonic_Humidification_DAH_IOM_installation.pdfstulz_Ultrasonic_Humidification_DAH_IOM_installation.pdf · 0 codes, 20 symptom rows
  • CyberRow DX row-based precision air conditioners (glycol-cooled, water-cooled & air-cooled DX variants)stulz_CyberRow_DX_IOM_installation.pdf · 17 codes
  • CyberRow CW (Chilled Water) row-based precision air handlersstulz_CyberRow_CW_IOM_installation.pdf · 20 codes
MuntersOpen
Manuals 18Codes 0
  • munters_ten-mlp-e1505_iom.pdfmunters_ten-mlp-e1505_iom.pdf · 0 codes
  • munters_ten-mx2p-b1505_iom.pdfmunters_ten-mx2p-b1505_iom.pdf · 0 codes
  • munters_ten-dsc-e1708_iom.pdfmunters_ten-dsc-e1708_iom.pdf · 0 codes
  • munters_190ten-1081-j1408_iom.pdfmunters_190ten-1081-j1408_iom.pdf · 0 codes
  • munters_190ten-1067-j1408_iom.pdfmunters_190ten-1067-j1408_iom.pdf · 0 codes
  • munters_190ten-1065-j1408_iom.pdfmunters_190ten-1065-j1408_iom.pdf · 0 codes
  • munters_190ten-1049-h1307_iom.pdfmunters_190ten-1049-h1307_iom.pdf · 0 codes
  • munters_190tgb-1034-l1604_iom.pdfmunters_190tgb-1034-l1604_iom.pdf · 0 codes
  • and 10 more manuals

drives and controls

ABB DrivesOpen
Manuals 3Codes 133132 with the manual's checks9 readings
  • ACS355 machinery driveabb-drives_ABB-ACS355-User-Manual_install-manual.pdf · 117 codes, 116 with checks
  • bac_3AXD50000011888_RevF_wiring-diagram.pdfbac_3AXD50000011888_RevF_wiring-diagram.pdf · 16 codes, 16 with checks
  • ACH550 HVAC drive, 1-550 hp (full User's Manual)abb-drives_ABB-ACS580-User-Manual-3AUA0000081823-RevF_wiring · 0 codes
Danfoss DrivesOpen
Manuals 4Codes 18156 with the manual's checks2 readings
  • danfoss_VACON-20-Complete-User-Manual_engineering-data.pdfdanfoss_VACON-20-Complete-User-Manual_engineering-data.pdf · 26 codes, 26 with checks
  • danfoss_VLT-FC102-HVAC-Drive-Instruction-Manual_wiring-diagram.pdfdanfoss_VLT-FC102-HVAC-Drive-Instruction-Manual_wiring-diagr · 89 codes, 20 with checks
  • VLT HVAC Drive FC 102danfoss_VLT-FC102-HVAC-Drive-Operating-Instructions_wiring-d · 22 codes, 9 with checks
  • danfoss_VLT-6000-Instruction-Manual_wiring-diagram.pdfdanfoss_VLT-6000-Instruction-Manual_wiring-diagram.pdf · 44 codes, 1 with checks
FrickOpen
Manuals 1Codes 26
  • york-jci_610-070-O_GMM_Operation_Guide_r2_2017-10_installation.pdfyork-jci_610-070-O_GMM_Operation_Guide_r2_2017-10_installati · 26 codes
Schneider ElectricOpen
Manuals 6Codes 373373 with the manual's checks3 readings157 symptom rows
  • Uniflair InRow Direct Expansion Air Conditioner, RD100 Series (Indoor Unit) & CU100 Series (Heat Rejection Unit)schneider_inrow-rd100-cu100-om-990_unknown.pdf · 142 codes, 142 with checks, 22 symptom rows
  • InRow DX Direct Expansion Air Conditionersschneider_inrow-dx-acrd600-om-990-5712D_unknown.pdf · 57 codes, 57 with checks, 22 symptom rows
  • InRow RC Chilled Water Air Conditionersschneider_inrow-rc-acrc600-om-990_unknown.pdf · 50 codes, 50 with checks, 25 symptom rows
  • InRow RC Chilled Water Air Conditioners (301 series)schneider_inrow-rc-acrc301-om_unknown.pdf · 47 codes, 47 with checks, 37 symptom rows
  • InRow RP Chilled Water Air Conditionersschneider_inrow-rp-cw-om_unknown.pdf · 47 codes, 47 with checks, 28 symptom rows
  • InRow Air-Cooled, Direct Expansion (InRow DX 10 kW)schneider_inrow-dx-acrd100-om-990-3212E_unknown.pdf · 30 codes, 30 with checks, 23 symptom rows
DeltaOpen
Manuals 1Codes 14884 with the manual's checks11 readings
  • Delta MS300 Series Standard Compact Drive (variable frequency drive)delta_MS300-Series-VFD-User-Manual_wiring-diagram.pdf · 148 codes, 84 with checks
GE ECMOpen
Manuals 1Codes 11 with the manual's checks
  • ge-ecm_ECM-Technical-Manual-06_install-manual.pdfge-ecm_ECM-Technical-Manual-06_install-manual.pdf · 1 code, 1 with checks
RefcoOpen
Manuals 1Codes 8
  • refco_M_INSTALL_3004148_Combi_Manual_en_installation.pdfrefco_M_INSTALL_3004148_Combi_Manual_en_installation.pdf · 8 codes

A manual listed with codes and no checks is one whose maker prints a code list and no procedure for it; the card says so rather than filling the gap. Where a manual prints its troubleshooting by symptom instead of by code, it appears under the brand's "Start from a symptom" entry.