Model reference
Denso CM25
Air Conditioner
1 document27 error codes5 service modes
Available documentation
Service Manual
- Service Manual CM 2589 pg
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Error codes (27)
CodeMeaning
ALFire alarm input signal received from fire alarm control panel.DFFreezing abnormalityE01WMC room thermistor (RTS1) failureE02Evaporator inlet air thermistor (RTS2) failureE03Condenser inlet air thermistor (ODS) failureE04Condenser thermistor (CTS1) failureE05Evaporator pipe inlet thermistor (CTS2) failureE06Evaporator pipe outlet thermistor (CTS3) failureE07Condensation overflow detected from optional condensate pumpE08WMC communication errorE09Evaporator fan motor lockedE10Condenser fan motor lockedE11STI module communication errorE14Compressor over currentE15Compressor lock failureE16Compressor phase interruption abnormalityE17Motor position detection abnormalityE18Input overcurrentE19Power device temperature abnormalityE20DC voltage abnormalityE21Power device damage abnormalityE22Circuit malfunctionHPHigh-pressure signal detectedIREvaporator fan motor reverse rotation abnormalityOLCompressor overload relay activated due to high temperature build-up in…ORCondenser fan motor reverse rotation abnormalityPUCondensation overflow detectedService modes (5)
- Initialize Fan Motor1) With power OFF, turn DIP switch 2-1 ON
- Operational Status DisplayPress and hold the UP (▲), DOWN (▼), and FAN MODE buttons simultaneously for 3 seconds while CM 25…
- Self-Diagnostic Code Display - Service ModePress and hold the UP (▲) and DOWN (▼) buttons on the WMC simultaneously for 3 seconds
- Self-Diagnostic Code Records DisplaySet the unit to standby mode, then press and hold the RESET button for 3 seconds
- TEST ModeSet the CM 25 to standby mode, then turn DIP switch 3-1 ON, then turn on the unit. Unit will…
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