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Error code

Mitsubishi Electric PQHY code 4220

For your safety

This fault is rated high and involves an area that affects personal safety. No remote repair or do-it-yourself instructions are given; do not use the appliance or try to open or repair it.

Hazard area: mains voltage and refrigerant gas circuit

Do not use the appliance and call an authorised service. If there is a risk to life, move to a safe place and see the emergency numbers.

The emergency numbers here are for Turkey. If you are outside Turkey, call your local emergency number.

All emergency numbers and province details

No approved translation for this record yet; showing the original text.

Meaning

Bus voltage drop (Detail code 108) Bus voltage rise (Detail code 109) Abnormal VDC (Detail code 110) Refer to section -7-"Inverter: If Vdc 150V or less is de- (1) tected during Inverter operation. (S/W detection) (2) (3) (4) (5) If Vdc 425V or more is (1) detected during inverter operation. (2) Same Bus voltage abnormality If Vdc 400V or more or Vdc 160V or and less is detected. (H/W detection) " under part [4] "Trouble shooting | Logic error (Detail code No.111): If only the H/W error logic circuit operates, and no identifiable error is detected. | Bus voltage drop (Detail code 108) Bus voltage rise (Detail code 109) Abnormal VDC (Detail code 110) Refer to section -7- "Inverter: If Vdc 150V or less is detected during Inverter operation. (S/W detection) If Vdc 425V or more is detected during inverter operation. Bus voltage abnormality If Vdc 400V or more or Vdc 160V or less is detected. (H/W detection) " under part [4] "Trouble

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Possible causes

Power supply environment Voltage drop detected Main board failure 52C failure Diode stack failure Different voltage connection INV board failure as detail code No.108 109 of 4220 error principal parts" for error codes (1) External noise (2) Compressor INV board failure (3) G/A board failure (4) IPM failure (5) DCCT failure (1) Power supply environment (2) Voltage drop detected (3) Main board failure (4) 52C failure (5) Diode stack failure (1) Different voltage connection (2) INV board failure Same as detail code No.108 and 109 of 4220 error. shooting principal parts" for error

Solution

Solution steps are not shared for faults that may be dangerous.

No do-it-yourself solution is given for this fault. For your safety, call an authorised service.