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