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18.1.1 Relationship Between the Condition of the Air Conditioner and Pressure and
Electric Current
Condition of the
air conditioner
Cooling Mode Heating Mode
Low Pressure High Pressure
Electric current
during operation
Low Pressure High Pressure
Electric current
during operation
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 measurement of pressure, electric current, and temperature fifteen minutes after an operation is started.
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