Suspension Of Starting By Abnormal Compression Ratio - Samsung AM072BXV Series Service Manual

Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)
4-3-34

: Suspension of starting by abnormal compression ratio

Outdoor unit
display
Duct, Cassette (1/2 Way),Console, Celing
Operation
Indoorunit
display
×
※ ● : ON ◑ : Flash ×: OFF
• Compression ratio [(High pressure+1.03)/(Low pressure+1.03)] less than 1.5 and lasts for 10 minutes or more
Judgment
Method
• 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
Auto Trial Operation
Is the S-net estimated value
and the Manifold Gauge value in range?
Are the 4Way Valve normally operating?
Are the Indoor Unit and Outdoor Unit EEV
normally operating?
Is current of compressor normally?
Complete
Samsung Electronics
Defrost Timer Fan Filter/MPI
×
◑ ◑
Yes
Yes
No
Yes
Cassette (4/Mini4 Way)
Operation Defrost
×
◑ ◑
No
No
No
No
Wall-mounted (NeoForte)
Timer Filter Operation Timer
◑ ◑ ●
Replace defective sensor
Replace defective sensor
Check the 4Way Valve
Check the relevant EEV
Compressor Inspection
Check the refrigerant
Turbo
◑ ◑
115