Tadiran Telecom AVL-200, Service Manual

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8.2 Poor Cooling Troubleshooting.
Symptom Probable Cause Corrective Action
1 Refrigerant flow
failure 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.
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.
2 Air circulation
failure.
Air filter is clogged. Clean air filter.
3 Installation failure. 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.
1. Relocate units.
2. Relocate or replace tubes.