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Troubleshooting for Outdoor Unit
Troubleshooting
158
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Stop valve open?
YES
High
pressure switch
connector S40 properly
connected?
YES
Disconnect the connector
S40 from the PCB.
Check
the resistance
between the pins 1 - 2 on
the connector
S40.
Resistance ∞
Disconnect the 2 terminals of
the high pressure switch
(S1PH).
Check
the resistance
between the 2
terminals of the high
pressure switch
(S1PH).
Resistance ∞
NO
NO
Nearly 0 Ω
Nearly 0 Ω
SiUS092230E
Open the stop valve.
Reconnect the connector.
Replace the outdoor unit PCB
(main PCB).
Replace the harness for the high
pressure switch.
Replace the high pressure switch
(S1PH).
(R22435)
Part 6 Service Diagnosis
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