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17.2 Relationship Between the Condition of the Air Conditioner and Pressure
and Electric Current
Condition of the
air conditioner
Insufficient refrigerant
(gas leakage)
Clogged capillary tube,
expansion valve 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.
Cooling Mode
Low Pressure
High Pressure
Electric current
Low Pressure
during operation
92
Heating Mode
Electric current
High Pressure
during operation
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