CLIMATE 5000 RAC SINGLE SPLIT (R32) – 6720894076 (2019/08) 41
Troubleshooting
2.Field Maintenance Electrical Circuit Refrigerant Circuit
Possible causes of trouble
Power failure
Blown fuse or varistor
Loose connections
Shorted or broken wires
Safety device opens
Faulty thermostat / room temperature sensor
Wrong setting place of temperature sensor
Faulty transformer
Shorted or open capacitor
Faulty compressor contact
Faulty fan contact
Low voltage
Faulty stepping motor
Shorted or grounded compressor
Shorted or grounded fan motor
Compressor stucked
Shortage of refrigerant
Restricted liquid line
Dirty air filter
Unit will not start
✩ ✩ ✩ ✩ ✩ ✩
Compressor does not start - Only fan runs
✩ ✩ ✩ ✩ ✩ ✩
Compressor and condenser (outdoor) fan will
not start
✩ ✩ ✩
Evaporator (indoor) fan will not start
✩ ✩ ✩ ✩
Condenser (Outdoor) fan will not start
✩ ✩ ✩ ✩ ✩
Unit runs, but shortly stops
✩ ✩ ✩ ✩
Compressor short-cycles due to overload
✩ ✩ ✩
High discharge pressure
Low discharge pressure
✩
High suction pressure
Low suction pressure
✩ ✩ ✩
Unit runs continuously but insufficient cooling
✩ ✩ ✩
Too cool
✩ ✩
Compressor is noisy
Horizontal louver can not revolve
✩ ✩ ✩
Test method / remedy
Check power supply
Check fuse type & size
Check connections - tighten
Check wiring
Check safety functions
Check thermostat, sensor and wiring
Check the correct position of the temperature sensor
Check circuit board
Check capacitor with tester
Check the contacts
Check the contacts
Test voltage
Check the stepper motor and replace if defect
Check resistance with multimeter
Check resistance with multimeter
Check the compressor and replace if defect
Perform leakage test
Check liquid pipe and correct
Clean or replace
Table 15.
To Next Page
Loading...
