Error code

Mitsubishi Electric klima code P8

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Meaning

9-3. TROUBLESHOOTING Phenomena 1. Remote controller work.: Note 3: It takes at least 27 minutes to detect abnormality. Note 4: It excludes the period of defrosting (Detection restarts when defrosting mode is over) Heating range : 37.4°F (3°C) ≤ (Condenser/ Evaporator temperature (T63HS)− room temperature(TH1)) OF PROBLEMS display does not 12 VDC is not supplied 12–15 VDC is supplied however, no display • “Please Wait” is • “Please Wait” is Factor is remained on At longest 2 minutes after “Please Wait” is displayed Communication error between troller and

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Possible causes

evaporator> thermistor • Defective refrigerant circuit Converse connection of extension pipe (on plural unit connection) Converse wiring of indoor/ outdoor unit connecting wire (on plural unit connection) Defective detection of indoor room temperature and pipe <condenser/evaporator> temperature thermistor Stop valve is not opened completely. Factor to remote controller. to remote controller, is indicated. not displayed. displayed. the power supply Normal to start up. Self-diagnosis the remote con- ”Please in the case the indoor and communication controller (1) When Check miswiring. (Converse S3 wiring.) (2) When Indoor/outdoor connector is Check board. 30 If refrigerant and LEV Inspect and opening. surface are below until the unit runs. in the indoor unit or refrigerant is (are) chugging. play*. ■ During external signal control, play and FTC operation cannot controller. ■ W

Solution

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