Sanyo SPW-C483GYH8 Service Manual page 167

1. Troubleshooting
(13) Symptoms: LCD on the remote controller displays "CHECK P03".
Unusual discharge gas temperature
• Gas shortage
• Clogged refrigerant circuit
• Electronic refrigerant control
valve defect (indoor unit)
• (Over-charged refrigerant)
(14) Symptom: LCD on the remote controller displays "CHECK P04". (High-pressure switch operation)
Start
3
The system does not operate again.
High-pressure switch operation
(Both cooling and heating)
• Electronic refrigerant control valve
defect
(indoor unit)
(Cooling)
• Outdoor unit, heat exchanger dirty,
clogged
• Outdoor unit air short
• Outdoor fan stopped
• Refrigerant over-charged
(Heating)
• Outdoor unit air short
• Indoor unit, heat exchanger dirty,
clogged
• Large pipe side service valve
closed
• Indoor fan stop
• Air filter clog
(Alarm for unusual PC comp, discharge temp.)
The remote controller LCD displays "CHECK P17".
(Alarm for unusual PC comp, discharge temp.)
Start
Yes
0343_M_I
No
Yes
Are there connection defects in
the wiring?
No
High-pressure switch defect
III - 18
Service Procedures
Yes
Repair the wiring.
0344_M_I
SM830052