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RemFixitSearch fault code

Error code

Mitsubishi Electric SEZ code 4210

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Meaning

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Possible causes

Other case Phenomenon Cause working of remote A connector attaching the panel to the switch ON/OFF is not connected. Short circuit the protecting parts in the Indoor controller board. Trouble of the Indoor controller board. Wiring between the indoor and the wired remote controller is coming off. Trouble of the remote controller. the Indoor units Wiring between the indoor and outdoor not working the outdoor coming off. Difference of wiring polarity between the indoor and outdoor. Trouble of the outdoor inverter P.C. board. Trouble of the contactor (52C). Malfunction of outdoor unit. Fan motor connector is coming off. rotating the fan in the unit. Trouble of the fan motor. A connector attaching the panel to the vane doesn't work. is not connected. Fixing of horizontal vane. of indoor controller board and indoor fan motor Check code : 6800 Error was found in the signal transmitted received between the indoor and outdoor Are there Is the connecting wire between noise the indoor and outdoor units the connecting connected properly? indoor No Yes Yes Connection is defective. Remove the devices. Turn off the power supply and turn it on again to operate cooling or heating mode. Operation lamp blinks once in a fixed period. No Yes Normal Indoor controller board is defective. Check code : 5101 Check the room temperature thermistor. Is the connector CN20 on the indoor controller board connected? Yes No Measure the resistance of room temperature thermistor. Connection is defective. Is the

Solution

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