Haier Smart Power Series Service Manual

Also see for 1UH071N1ERG: Installation manual Installation manual Installation manual

179Smart PowerErrorcode Malfunction Description Diagnosis and Analysis Remark19 DC voltage or AC voltage lowAC power supply of the driver module get voltage lowerthan 155VAC or driver module get high DC-BUS voltagelower than 180VDC.Resumable20 Indoor pipe temperature toohigh protectionIndoor pipe temperature Tm over 63°C, error clear within3 minutes if temperature goes down and lower than52°C.Resumable21Indoor pipe sensortemperature too lowprotectionIndoor pipe temperature too low,outdoor unit stop toprevent indoor heat exchange system icing and toprevent the indoor unit outlet air too low at the same timeResumable22 PFC circuit loop overcurrent Overcurrent been detected in power factor correctioncircuit loop. Resumable23 Temperature too high forcompressor driver moduleCompressor driver module’s PIM temperature over 90°C,Error stat-us lock if it occurs 3 times in 1 hour. Non-resumable24 Compressor start failure Compressor start failure been detected by driver drivermodule. Non-resumable25 Input overcurrent of the drivemoduleInput current of the compressor drive module higher than32A (double fan model) or 27A (single fan) , Lock if itoccurs 3 times in 1 hour.Non-resumable26 Lack phase of the drivemoduleLack phase of the drive module’s power supply.(threephase type) Non-resumable27 Input current sampling circuitfaultThe driver module’s input current sampling circuitdamaged. Resumable28 No wiring of the compressor No wiring between compressor and it’s driver module. Non-resumable37Compressor overcurrentdetected by compressordriver moduleCompressor phase U or V or W current over 27A (singlephase model) or 19.1A (single phase model) occuredduring non-rated period.Resumable38 Drive module’s ambient temp.sensor abnormalThe temperature detected is not within the range of -25°Cto 150 °C. Resumable39 Mid-condenser temp. sensorTC abnormalThe temperature detected is not within the range of -55°Cto 90 °C. Resumable42 High pressure switchabnormalAfter compressor running for 3 minutes, switch beendetected open circuit for 30seconds, Error lock if it occurs3 times in 1 hour.Non-resumable43 Low pressure switchabnormalAfter compressor running for 3 minutes, switch beendetected uncon-nected for 60seconds or unconnected for30seconds at standby.Non-resumable44Outdoor condensertemperatureTC too highprotectionThe maximum temperature value of Tc and Te is over 65°C, Error lock if it occurs 3 times in 30 minutes. Non-resumable45 System low pressureprotectionThe minimum temperature value of indoor pipe Tmand outdoorTs is lower than-45 °C at cooling mode orminimum temperature value of outdoor Tc and outdoor Teis lower than-45 °C.Non-resumableNote:1. The ou.tdoor control board’s LED3 indicates the outdoor error code. for example, the error code 12, LED3 willdisplay 12 and keep flashing.2. NO-resumable means error will not clear unless: a. clean out the fault factor b. Cut the power supply off andreoffer again after point a achieved.3. The indoor unit can also indictes the outdoor malfuction code too. Please refer to indoor unit manul to get themethod.