Table of Contents
Advertisement
Cycle Troubleshooting Guide
Trouble analysis
1. Check temperature difference between intake and discharge air and operating current.
Temp. Difference
Operating Current
Notice:
Temperature difference between intake and discharge air depends on room air humidity. When the room air
humidity is relativery higher, temperature difference is smaller. When the room air humidity is relatively lower
temperature difference is larger.
2. Check temperature and pressure of refrigeration cycle.
Notice:
1. The suction pressure is usually 4.5~6.0 kg/cm
2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with
putty.
Suction pressure
(Compared with
the normal value)
Higher
Lower
Temp. difference
Current
Temp. difference
Current
Temp. difference
Current
Temp. difference
Temperature
(Compared with
the normal value)
High
Normal
Higher
: approx. 0°C
: less than 80% of
rated current
: approx. 8°C
: less than 80% of
rated current
: less than 8°C
: over the rated
current
: over 8°C
G at normal condition.
2
Cause of Trouble
Defective compressor
Defective 4-way reverse valve
Excessive amount of
refrigerant
Insufficient amount of
refrigerant(Leakage)
Clogging
- 43 -
All amount of refrigerant leaked out.
Check refrigeration cycle.
Refrigerant leakage
Clog of refrigeration cycle
Defective compressor
Excessive amount of refrigerant
Normal
Description
Current is low.
High pressure does not quickly
rise at the beginning of operation.
Current is low.
Current is low.
Advertisement
Table of Contents
Troubleshooting
