Error code

Mitsubishi Electric PLA code P2

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

Meaning

Pipe temperature thermistor/liquid (TH2) 1 The unit is in 3-minute resume prevention mode if short/open of thermistor is detected. Abnormal if the unit does not reset normally after 3 minutes. (The unit returns to normal operation, if it has been reset normally.) 2 Constantly detected during cooling, drying, and heating (except defrosting) operation Short: 194°F [90:] or more Open: −40°F [−40:] or less Note: When all of the following conditions have been satisfied, the error is not detected: 1)

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Possible causes

(1) Defective thermistor characteristics (2) Contact failure of connector (CN44) on the indoor controller board (Insert failure) (3) Breaking of wire or contact failure of thermistor wiring (4) Defective refrigerant circuit is causing thermistor temperature of 194°F [90:] or more, or −40°F [−40:] or less. (5) Defective indoor controller board

Solution

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