Error code

Mitsubishi Electric SUZ code 4220

For your safety

This fault is rated critical. 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

If there is a risk to life, first move to a safe place, then call 112. Do not follow remote repair instructions.

Call 112

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

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

Meaning

Detailed To find out the detail history (latest) codes Refer to "10-9. FUNCTION OF SWITCHES, Overvoltage error • Increase to DC bus voltage to 430V 01 Undervoltage error • Instantaneous decrease in DC bus voltage to 200 V 02 Input current sensor error • Decrease in input current through outdoor unit to 0.5 A 04 only if operation frequency is more than or equal to 40 Hz or compressor current is more than or equal to 6 A. Abnormal power synchronous signal • No input of power synchronous signal to | Detailed To find out the detail history (latest) codes Refer to "10-9.

Member details

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Possible causes

Abnormal increase in power source voltage Disconnection of compressor wiring Defective outdoor power circuit board Compressor has a ground fault. Decrease in power source voltage, instantaneous stop. Defective converter drive circuit in outdoor power circuit board Defective 52C drive circuit in outdoor power circuit board Disconnection or loose connection of CN2 on the outdoor power circuit board/controller circuit board Power circuit failure on DC supply for 15 VDC output on outdoor controller circuit board Defective input current detection circuit in outdoor power circuit board Defective outdoor controller circuit board Distortion of power source voltage, noise superimposition Disconnection or loose connection of the ground wiring Disconnection or loose connection of CN2 on the outdoor power circuit board/controller circuit board Defective power synchronous signal circuit in outdoor controller circuit board Defective power synchronous signal circuit in outdoor power circuit board Abnormal increase in power source voltage Decrease in power source voltage, instantaneous stop Disconnection of compressor wiring Misconnection of reactor (DCL) Defective outdoor power circuit board Defective reactor (DCL) Disconnection or loose connection of CN2 on the outdoor power circuit board/controller circuit board Distortion of power source voltage, noise superimposition. Disconnection or loose connection of the ground wiring Disc

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.