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Condition of the
conditoner
Insufficient
refrigerant (gas
leakage)
Clogged capillary
tube or Strainer
Short circuit in
the indoor unit
Heat radiation
deficiency of the
outdoor unit
Inefficient
compression
- Carry out the measurements of pressure, electric current, and
temperature fifteen minutes after an operation is started.
13.1.2. Diagnosis methods of a malfunction of a compressor and 4-way valve
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air
Low Pressure
Cooling Mode
High
Electric
Pressure
current
during
operation
63
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Heating Mode
Low Pressure
High
Pressure
Electric
current
during
operation
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