Troubleshooting
Si10-417
128
Service Diagnosis
Trouble
shooting
Check No.4
Refer to
P.151
Check No.6
Refer to
P.157
Reconnect in position.
Open the stop valve.
Repair the pipe flare
or replace the square
union.
Replace the electronic
expansion valve.
CT in trouble (refer to
H8).
Procedure complete
Any thermistor
disconnected?
YES
Malfunctioning
NO
Functioning
Stop valve closed?
NO
YES
Check the CT.
YES
NO
Gas shortage
error again?
YES
NO
Oil oozing
at internal piping?
NO
YES
C
heck No.
4
Electronic expansion valve
functioning?
YES
NO
Oil
oozing at relay pipe
connections?
Check for gas leakage.
Change for a specified
amount of fresh refrigerant.
* Discharge pipe
thermistor
* Indoor / outdoor
unit heat
exchanger
thermistor
* Room
temperature
thermistor
* Outdoor air
thermistor
A
B
Caution
Be sure to turn off power switch before connect or
disconnect connector, or parts damage may be occurred.
Si10-417.fm Page 128 Wednesday, September 22, 2004 6:38 PM
