Troubleshooting for Outdoor Unit SiUS122226E
196 Part 6 Service Diagnosis
Troubleshooting
NO
YES
Nearly 0 Ω
Resistance ∞
Check
the resistance
between the pins 1 - 2 on
the connector
S40.
Stop valve open?
Open the stop valve.
Nearly 0 Ω
Resistance ∞
Replace the harness for the high
pressure switch.
Replace the high pressure switch
(S1PH).
Disconnect the connector
S40 from the PCB.
Replace the outdoor unit PCB
(main PCB).
Disconnect the 2 terminals of
the high pressure switch
(S1PH).
NO
YES
High
pressure switch
connector S40 properly
connected?
Reconnect the connector.
Check
the resistance
between the 2
terminals of the high
pressure switch
(S1PH).
(R22435)
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.