Comp. Down By Compression Ratio Control - Samsung AM056FN2DEH Series Service Manual

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: Comp. Down by Compression Ratio Control

Outdoor unit display
Indoor unit display
∙ When compression ratio (high pressure+1)/(low pressure+1) less than 1.5 and lasts for 10 minutes or more
Criteria
∙ Differential pressure (high pressure - low pressure) less than 0.4 MPa.g and lasts for 10 minutes or more
∙ Indoor and Outdoor EEV breakdown
∙ 4Way Valve breakdown
Cause of problem
∙ High and Low pressure sensor defective
∙ Refrigerant shortage
1. Cause of problem
Is the S-net estimated value and the
Manifold Gauge value in range?
Are the 4Way Valve normally
Are the Indoor Unit and Outdoor
Unit EEV normally operating?
Is current of compressor normally?
Samsung Electronics
Commissioning
Yes
operating?
Yes
No
Yes
Complete
Connect S-net and Manifold Gauge.
(essential requirement)
No
Replace defective sensor
No
Check the 4Way Valve
No
Check the relevant EEV
No
Compressor Inspection
Check the refrigerant
Troubleshooting
481