Panasonic CS-A73KR Service Manual page 73

Condition of the
air
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
Cooling Mode
Low Pressure High
Pressure
Electric Low Pressure
current
during
operation
73
Heating Mode
High Electric
Pressure current
during
operation