Mitsubishi Electric PUY/PUZ error codes
Codes
- U4Error code(PAC-SK52ST) (Refer to 11-10.) Thermistors Symbol Name TH3 Thermistor <Outdoor Thermistor <Outdoor TH6 TH7 Thermistor <Outdoor> Th
- U5Error codeThermistors Symbol Name TH3 Thermistor <Outdoor Thermistor <Outdoor TH6 TH7 Thermistor <Outdoor> Thermistor <Heatsink> TH8 Temperature of heatsink Abnormal if heatsink thermistor (TH8) detects temperature indicated below. ·············84:, A12, 18, 42N 183˚F ·············81:, A24, 30, 36N 177˚F
- U6Error codePower module Check abnormality by driving power module in case overcurrent is detected. (UF or UP error condition)
- U8Error codeOutdoor fan motor Abnormal if the rotational frequency of fan motor is not detected during DC fan motor operation. Fan motor rotational frequency is abnormal if; • 100 rpm or below detected continuously 20:[68˚F] for 15 seconds at or more outside air temperature • 50 rpm or below or 1500 rpm or more detected continuously for 1 minute. | Outdoor fan motor Abnormal if the rotational frequency of fan motor is not detected during DC fan motor operation. Fan motor rotational frequency is abnormal if; • 100 rpm or below detected continuously for 15 seconds at 20: [68˚F] or more outside air temperature • 50 rpm or below or 1500 rpm or more detected continuously for 1 minute.
- U9Error codeOvervoltage or voltage shortage and synchronous signal to main circuit Abnormal if any of followings are detected during compressor operation; • Abnormal power synchronous (zero c
- UFError codeCompressor overcurrent interruption (When compressor locked) Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating.
- UHError codeCurrent sensor error • Abnormal if current sensor detects –1.5A to 1.5A during compressor operation. (This error is ignored in case of test run mode.) w This error is ignored in case of test run mode. • It’s abnormal for 38A the input current or 10 seconds continuous 34A or more.
- ULError codeLow pressure (63L operated) Abnormal if 63L is operated (under0.03MPa) during compressor operation. 63L: Low-pressure switch (A42N only)
- UPError codeCompressor overcurrent interruption Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds.