Samsung AM032MNQDCH/AA Service Manual page 300

Troubleshooting
4-4-57 : Comp. Down due to Compressor Discharge Temperature sensor
Outdoor Unit Display
Indoor Unit Display × ( Operation )
Judgment Method ∙ When value of compressor discharge temperature sensor is checked at 120°C or more .
∙ Refrigerant shortage
∙ Electronic expansion valve is blocked.
∙ Service valve blocked
Cause of problem
∙ Defective discharge temperature sensor
∙ Blocked pipe and defective
∙ Leakage of compressor discharge check valve of not-go-end outdoor unit
1. Cause of problem
value normal for the Compressor
Discharge Temperature sensor?
Are all service valves open?
and Outdoor Unit EEV normally
any blockage inside the pipe?
Check the refrigerant amount.
4-100
( Reservation ) ( Blast )
Is the resistance
(Refer to E251)
Yes
Commissioning
Yes
Are the Indoor Unit
operating?
Yes
Are there
(filter etc.)
No
( Filter ) × ( Defrost )
No
Replace Compressor Discharge
Temperature sensor
Connect S-net and Manifold Gauge.
(essential requirement)
No
Open the Service Valve
No
Check the relevant EEV
Yes
Pipe inspection
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