Malfunctioning
Functioning
NO
Functioning
Malfunctioning
Functioning
YES
Malfunctioning
Correct.
Reconnect.
YES
YES
YES
NO
NO
Replace the four-way valve
coil.
NO
Replace the outdoor unit
PCB.
Refrigerant shortage
Water mixed
Stop valve defective
Replace a defective
thermistor.
Refer to the refrigerant line
check procedure.
Replace the four-way valve
(defective or dust-clogged).
Reconnect in position.
Caution
Be sure to turn off the power switch before connecting or disconnecting
the connector, or parts damage may occur.
(R7345)
Four-way valve
coil disconnected (loose)?
Harness out of
connector?
Any thermistor
disconnected?
Check No. 06
Check the thermistors.
Check No. 11
Check the refrigerant line.
Check No.
05
Check the four-way valve
switching output.
Disconnect the
`harness from the
connector.
Resistance between
harnesses about
3κΩ±0.5κΩ
?
Check the continuity of the four-way
valve coil and harness.
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