Samsung AM080FX A Series Service Manual page 176

Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)
4-3-31 : Comp. Down due to High Pressure Protection Control (cont.)
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 41kg/cm² or more
Method
<Cooling operation>
∙ Overheat of supplying water
∙ Shortage of supplying water
∙ Outdoor heat exchanger is contaminated.
Cause of
∙ Service valve locked/Fill refrigerant
problem
<Heating operation>
∙ Indoor unit fan motor problem(constrained, defective)
∙ Service valve locked/Excessive refrigerant
1. Cause of problem
Are all service valves open?
estimated value and the Manifold Gauge
and Outdoor Unit EEV normally
Are there any blockage inside
When cooling operation,
water temperature, quantity, or heating operation,
indoor fan operates normally do?
Check the refrigerant amount.
Samsung Electronics
( Water Cooled )
Defrost Timer Fan Filter/MPI
× ◑ ◑
Auto Trial Operation
Yes
Is the S-net
value in range?
Yes
Are the Indoor Unit
operating?
Yes
the pipe? (filter etc.)
No
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
Check the water pipes or Replace
relevant component(motor or fan)
Turbo
◑ ◑
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