High Voltage Protection Compressor Stopped - Samsung AVXCSH023/032/040CE Service Manual

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: High voltage protection compressor stopped

Outdoor unit display
Indoor unit display
Criteria
Cause of problem
1. How to check
All the sub valves open?
Reactions from S-net and vacuum?
The indoor/outdoor EEV operates normally?
Clogging in the pipe? (ex-filter)
While the AC or heater is on,
the indoor/outdoor
fan operates normally?
Check the amount of coolant.
Samsung Electronics
×(Operation) (Timer) (Fan)
• The high pressure sensor reading approaches 38KG/CM 2 .
<AC in operation>
• Check electrical installation of the outdoor machine.
• Polluted outdoor machine heat exchanger.
• Closed sub valve./Add some coolant.
• Check for clogging in the suction area of the indoor
machine.
• Electrical motor is weak or cut off cable.
• Fan control SSR inefficient.
Test operation
Yes
Yes
Yes
No
Yes
(Filter) ×(Defrost)
<Heater in operation>
• Electrical installation of the outdoor machine.
• Closed sub valve./Add some coolant.
• Electrical motor is weak or cut off cable.
Connect S-net to vacuum. (Forceful)
No
Open the sub valve.
No
Replace the high pressure sensor.
No
Yes
No
Troubleshooting
Check the EEV.
Check the pipeline.
Replace the parts.
(Electrical or fan)
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