Samsung AM072/096/120/144FXVAFH, Service Manual

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Troubleshooting
4-78 Samsung Electronics
: Suspension of starting due to Compressor discharge temperature sensor / Top temperature sensor
(cont.)
1. How to check
Is the resistance value normal for the
compressor discharge temperature sensor /
Top temperature sensor?
(Refer to E251)
Trial Operation
Are all service valves open?
Are the indoor unit and outdoor unit EEV
normally operating?
Are there any blockage inside the
pipe? (filter etc.)
Check the refrigerant amount
Replace compressor discharge temperature
sensor / Top temperature sensor
Open the service valve
Check the relevant EEV
Pipe inspection
Connect S-net and Manifold Gauge.
(essential requirement)
No
No
No
Yes
Yes
Yes
Yes
No
غ
AM038/048/055KXWD
✳✳
Outdoor unit display
Indoorunit display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation Defrost Timer Fan Filter/MPI Operation Defrost Timer Filter 18 ℃ 21 ℃ Turbo 24 ℃ 27 ℃
× × ◑ ◑ ◑ × ◑ ◑ ◑ × × ◑ ◑ ◑
※ ● : ON ◑ : Flash × : OFF
Judgment Method
∙ When value of compressor discharge temperature sensor / Top temperature sensor is checked at 120
℃
or more.
Cause of problem
∙ Refrigerant shortage.
∙ EEV is blocked.
∙ Service valve is blocked.
∙ Discharge temperature sensor is defective.
∙ TOP temperature sensor is defective.
∙ Pipe and filter is blocked
∙ Leakage of compressor discharge check valve of stopped side outdoor unit