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Denso Service Manuals & Error Codes
10Service Manuals
39Error Codes
1Appliance Types
Denso Appliance Types
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Top Error Codes for Denso
CodeTypeDescription
ALAir ConditionerDetection of unit stop signal from fire alarm system — input fire alarm signal...ALRMAir ConditionerUnit stop signal detected from fire alarm system — external fire alarm input...ASAir ConditionerCondensate pump problem — optional condensate pump is damaged or broken (J8...CFAir ConditionerLoss of cooling detection — room temperature minus freeze protection...DFAir ConditionerFreezing abnormality — evaporator inlet air thermistor temperature at or below...E01Air ConditionerWMC room thermistor (RTS1) failure — short or open detected.E02Air ConditionerEvaporator inlet air thermistor (RTS2) failure — short or open detected.E03Air ConditionerCondenser inlet air thermistor (ODS) failure — short or open detected.E04Air ConditionerCondenser thermistor (CTS1) failure — short or open detected.E05Air ConditionerEvaporator pipe inlet thermistor (CTS2) failure — short or open detected.E06Air ConditionerEvaporator pipe outlet thermistor (CTS3) failure — short or open detected.E07Air ConditionerCondensation overflow detected from optional condensate pump — optional drain...E08Air ConditionerWMC communication error — communication error between relay board and WMC...E09Air ConditionerEvaporator fan motor locked — fan motor speed of 50 rpm or less detected four...E1Air ConditionerRoom thermistor connection problem — room thermistor is open or shorted.