Samsung AM032MNQDCH/AA Service Manual page 297

4-4-54 : Comp. Down due to High Pressure Protection Control
Outdoor unit display
Indoor unit display × ( Operation )
Judgment Method Value of the high pressure sensor is detected at 40kg/cm² or more
<Cooling Operation>
∙ Outdoor unit fan motor problem (constrained, defective)
∙ Motor driver defective or wire is cut
∙ Outdoor heat exchanger is contaminated.
∙ Service valve locked/Fill refrigerant
Cause of problem
<Heating Operation>
∙ Outdoor unit fan motor problem (constrained, defective)
∙ Motor driver defective or wire is cut
∙ Service valve locked/Excessive refrigerant
1. Cause of problem
Are all service valves open?
estimated value and the Manifold
Gauge value in range?
Are the Indoor Unit
and Outdoor Unit EEV normally
Are there any blockage inside
the pipe? (filter etc.)
Are the Outdoor Fan
operating normally for the cooling and the Indoor
Fan operating normally for
Check the refrigerant amount.
Samsung Electronics
( Reservation )
Commissioning
Yes
Is the S-net
Yes
operating?
Yes
No
the heating?
Yes
( Blast ) ( Filter ) × ( Defrost )
Connect S-net and Manifold Gauge.
No
No
Replace High Pressure sensor
No
Yes
No
Replace relevant component
Troubleshooting
(essential requirement)
Open the Service Valve
Check the relevant EEV
Pipe inspection
(motor or fan)
4-97