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SiBE04-101
Troubleshooting
Service Diagnosis
101
4.14
Operation Halt Due to Discharge Pipe Temperature Control
Remote Controller
Display
F3
Outdoor unit LED
Display
A
5
1
4
2
3
3
4
4
3
Method of
Malfunction
Detection
The discharge pipe temperature detected by the discharge pipe thermistor is used for discharge pipe
temperature control (stop or frequency step down control) .
Malfunction
Decision
Conditions
When an operation halt due to discharge pipe temperature error is confirmed 4 times, the system shuts
down.
The compressor halts when the temperature detected by the discharge pipe thermistor is
≥
114˚C.
(It will be released < 85˚C)
The 4-time counter resets itself when no outdoor unit abnormality occurs within 60 minutes of compressor
operation (cumulative time) after the error generation.
Supposed Causes
Activation due to insufficient refrigerant.
Activation due to disconnected discharge pipe thermistor.
Activation due to faulty 4-way valve.
Detection error due to faulty outdoor PCB.
Activation due to mixing of moisture in the pipes installed at site.
Activation due to faulty electronic expansion valve.
Activation due to faulty stop valve.
Troubleshooting
Check No.1
Refer to P.119
Check No.20
Refer to P.125
Check No.15
Refer to P.123
NO
Insert thermistor to right place.
Refer refrigerant system check.
Replace PCB.
Is the
discharge pipe thermistor
disconnected?
YES
NO
Replace thermistor.
Check No.1
Is there any thermistor
abnormality?
Check No.15
Is there any refrigerant
system abnormality?
YES
NO
NO
Replace electronic expansion
valve or coil.
Check No.20
Is there any electronic
expansion valve
abnormality?
YES
YES
(R1061)
· Insufficient refrigerant.
· Faulty 4 way valve operation.
· Mixing of moisture in refrigerant system.
· Faulty stop valve.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
SiBE04-101.book Page 101 Monday, October 15, 2001 3:08 PM