Tadiran Telecom AVL-200 Service Manual page 30

SKY
8.2 Poor Cooling Troubleshooting.
Symptom
1 Refrigerant flow
failure
2 Air circulation
failure.
3 Installation failure.
Probable Cause
1. Refrigerant gas shortage.
2. Excessive overcharging of
refrigerant.
3. Gas leakage.
4. Clogging of strainer or capillary
tube.
5. 4-Way valve is defective.
6. Solenoid 4-Way valve is
defective.
7. Compressor is defective.
8. Service valves are not fully
open.
Air filter is clogged.
1. Location of the indoor or the
outdoor units is not according
to the instructions.
2. Refrigerant tubes between the
units are not installed
according to the instructions.
Corrective Action
1. Charge refrigerant gas.
2. Recharge gas.
3. Repair leakage.
4. Replace strainer.
5. Replace 4-Way valve.
6. Replace solenoid.
7. Replace compressor.
8. Open the valves full.
Clean air filter.
1. Relocate units.
2. Relocate or replace tubes.
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