Samsung AM080FX A Series Service Manual page 175

Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)
4-3-31 : Comp. Down due to High Pressure Protection Control
Outdoor unit
display
Duct, Cassette (1/2 Way),Console, Celing
Operation
Indoorunit
×
display
※ ● : ON ◑ : Flash ×: OFF
Judgment
∙ Value of the high pressure sensor is detected at 40kg/cm² or more
Method
<Cooling Operation>
∙ Outdoor unit fan motor problem (constrained, defective)
∙ Outdoor heat exchanger is contaminated.
Cause of
∙ Service valve locked/Fill refrigerant
problem
<Heating Operation>
∙ Service valve locked/Excessive refrigerant
1. Cause of problem
Are all service valves open?
estimated value and theManifold
and Outdoor Unit EEV normally
Are there any blockage inside
operating normally for the cooling
and the Indoor Fan operating normally
Check the refrigerant amount.
Samsung Electronics
( Air Cooled )
Defrost Timer Fan Filter/MPI
× ◑ ◑
Auto Trial Operation
Yes
Is the S-net
Gauge value in range?
Yes
Are the Indoor Unit
operating?
Yes
the pipe? (filter etc.)
No
Are the Outdoor Fan
for the heating?
Yes
Cassette (4/Mini4 Way)
Operation Defrost
◑ × ◑
No
No
No
Yes
No
Wall-mounted (NeoForte)
Timer Filter Operation Timer
◑ ◑ ●
Connect S-net and Manifold Gauge.
(essential requirement)
Open the Service Valve
Replace High Pressure sensor
Check the relevant EEV
Pipe inspection
Replace relevant component
(motor or fan)
Turbo
◑ ◑
187