Error code
Mitsubishi Electric PUZ code U2
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Meaning
(TH4: 1102) (TH33: 1132): High discharge temperature High comp. surface temperature (1) Abnormal if discharge temperature thermistor (TH4) exceeds 248˚F [120:] or 230˚F [110:] continuously for 5 minutes. Abnormal if condenser/evaporator temperature thermistor (TH5) exceeds 104˚F [40:] during defrosting and discharge temperature thermistor (TH4) exceeds 230˚F [110:]. (2) Abnormal if discharge superheat (Cooling: TH4−TH5 Heating: TH4−TH6) increases. All the conditions in A or B are detected simultaneously for 10 minutes co
Member details
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View details as a memberPossible causes
controller board (5) Disconnection or contact failure of 63H connection (6) Defective outdoor controller board (7) Defective action of linear expansion valve (8) Malfunction of fan driving circuit (1) Overheated compressor operation caused by shortage of refrigerant (2) Defective operation of stop valve (3) Defective thermistor (4) Defective outdoor controller board (5) Defective action of linear expansion valve
Solution
Solution steps are not shared for faults that may be dangerous.
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