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Troubleshooting for Outdoor Unit SiUS121827E
196 Part 6 Service Diagnosis
Troubleshooting
R6000442
Caution
YES
NO
NO
YES
YES
YES
NO
NO
YES
NO
∗ Discharge pipe thermistor
∗ Indoor or outdoor heat exchanger thermistor
∗ Room temperature thermistor
∗ Outdoor temperature thermistor
Check for refrigerant shortage.
A
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Reconnect the thermistor(s).
Open the stop valve.
Repair the pipe flare or
replace the union.
Check if any harnesses are
in contact with the piping
and correct as required.
Also, replace any cracked
pipes.
Check the connection of the
power transistor harness.
Also, replace any cracked
pipes.
Oil leak at
internal piping?
Stop valve
closed?
Compressor
vibrating too much?
Oil leak at relay
pipe connections?
Any thermistor
disconnected?
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Replace the outdoor fan
motor.
Reconnect the connector or
fan motor lead wires.
Change the installation
location or direction.
Clean the outdoor heat
exchanger.
Check the installation space.
NG
OK
OK
NG
Check No. 19
Check the outdoor fan.
Check No. 17
Check the installation
condition.
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