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Sanyo XH3672R / CH3672R User Manual

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IV-6
SM831148
4. Service procedures
Judgment condition
Clear condition
P29
F04
F06
Alarm
contents
Judgment and correction
Recovery at restart
Recovery at restart
Recovery at restart
Recovery at restart
Recovery at restart
Current detection 
circuit trouble
• AC current value is 
high even when 
compressor is 
stopped.
Inverter stops after alarm is 
detected. Alarm is output 
when inverter stops (pre-trip) 
consecutively 4 times.
1. Stops immediately when 
restarted.
•  Layer short in the 
compressor
2. Check inverter control PCB.
•  Wiring trouble
Compressor motor 
output trouble, 
Inverter compressor 
trouble,
MDC trouble
Inverter stops after alarm is 
detected.
1. Refrigerant cycle trouble, 
overload operation
2. Loose screws and contact 
failure between HIC control 
PCB and radiating plate
3. Cooling failure of radiating 
plate
4. Check outdoor unit PCB 
wiring.
Compressor does not 
run. (Overcurrent 
protection circuit 
activates after a certain 
period of time following 
compressor start.)
Inverter stops after alarm is 
detected.
1. Compressor trouble (locked, 
etc.)
•  Replace the compressor.
2. Compressor wiring trouble 
(missing phase)
Compressor
breakdown
• Starts to operate but 
operating frequency 
drops and 
compressor stops.
Inverter stops after alarm is 
detected.
1. Check power voltage: AC 
2. Refrigerant cycle overload 
operation
3. Check AC current detection 
circuit.
Inverter control PCB 
position detection 
circuit trouble
Inverter stops after alarm is 
detected.
Position detection circuit is 
activated even when the 
compressor 3P connector is 
disconnected and the 
compressor operated.
•  Replace the inverter control 
PCB.
Disconnection, open 
circuit, or short circuit 
in discharge temp. 
sensor (TD)
Sensor detection trouble
minutes have elapsed after 
compressor stopped).
(Open circuit)
Automatic recovery
Automatic recovery
1. Check discharge temp. 
sensor (TD).
2. Check outdoor unit control 
PCB.
Open circuit or short circuit
Disconnection, open 
circuit, or short circuit 
in outdoor heat 
exchanger temp. 
sensor (C1)
1. Check outdoor heat 
exchanger temp. sensor (C1).
2. Check outdoor unit control 
PCB.
Remote
controller
alarm display
Open circuit or short circuit
Automatic recovery
2. Check outdoor unit control 
PCB.
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Disconnection, open 
circuit, or short circuit 
in intake temp. sensor 
(TS)
1. Check intake temp. sensor 
(TS).
2. Check outdoor unit control 
PCB.
203 V 
± 20 V or 230 V ± 23 V.
26, 30, 36 MODEL:
42 MODEL:
Sensor defection trouble
(194
°F or higher when 60
minutes have elapsed after 
compressor stopped). 
(Open circuit) 
F07
Disconnection, open 
circuit, or short circuit 
in outdoor heat 
exchanger temp. 
sensor (C2)  
1. Check outdoor heat 
exchanger temp. sensor (C2). 
Open circuit or short circuit
Automatic recovery
2. Check outdoor unit control 
PCB.
F08
Disconnection, open 
circuit, or short circuit 
in outdoor air temp. 
sensor (TO)  
1. Check outdoor air temp. 
sensor (TO). 
(194
°F or higher when 15