Mitsubishi Electric AC Error Code 1102

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Checking code 1102: Serial transmission abnormality. Discharge temperature abnormality (Outdoor unit).

Meaning, detecting method

  1. When 140˚C or more discharge temperature is detected during operations (the first time), outdoor unit stops once, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts.
  2. When 140˚C or more temp. is detected again (the second time) within 30 minutes after stop of outdoor unit, emergency stop is observed with code No. “1102” displayed.
  3. When 140˚C or more temp. is detected 30 or more minutes after stop of outdoor unit, the stop is regarded as the first time and the process shown in 1 is observed.
  4. 30 minutes after stop of outdoor unit is intermittent fault check period with LED displayed (1202).

Cause

  1. Gas leak, gas shortage.
  2. Overload operations.
  3. Poor operations of indoor LEV.
  4. Poor operations of OC controller LEV: Cooling : LEV1.

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