Error code
Mitsubishi Electric PUZ code UL
No approved translation for this record yet; showing the original text.
Meaning
Low pressure Abnormal if the following conditions are detected for continuously 3 minutes after compressor starts heating operating for 10 minutes. 1. Heating mode Detection mode 1 TH7−TH3 4°C and [ TH5−Indoor room temperature 2°C [ Detection mode 2 TH7−TH3 2°C and [ TH5−Indoor room temperature [ 4°C and TH2−Indoor room temperature 4°C [ Detection mode 3 TH7−TH3 [ 4°C and TH5−Indoor room temperature 2°C [ and TH4−TH5 ] 20°C 2. Cooling mode TH6−TH7 2°C and [ TH3−TH7 [ 2°C and Indoor room temperat
Member details
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View details as a memberPossible causes
(1) Stop valve of outdoor unit is closed during operation. (2) Leakage or shortage of refrigerant (3) Malfunction of linear expansion valve (4) Clogging with foreign objects in refrigerant circuit Note: If water enters in refrigerant circuit, clogging may occur where the part becomes below freezing point.
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.
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