Samsung AVMKH020EA0 Service Manual page 190

8-2-7. Momentary power failure
Outdoor unit display
Indoor unit display
Judgment method
Causes
8-2-8. Protection of high pressure sensor
Outdoor unit display
Indoor unit display
Judgment method
Causes
✳Stop compressor when condensate pressure of the compressor is more than 28kg/cm
if the pressure is less than 21kg/cm
8-2-9. Protection of low pressure sensor
Outdoor unit display
Indoor unit display
Judgment method
Causes
✳Stop compressor when the low pressure is less than 3kg/cm
(Operation) (Timer)
- Temporary stop of the compressor due to momentary power failure
- Protection control of compressor (Not a defect)
(Operation) (Timer)
- Temporary stop of the compressor due to momentary power failure(Over 28kgf/cm
- Over charge of refrigerant
- Indoor/Outdoor unit fan motor trouble
- Indoor/Outdoor unit fan error
2 G.
(Operation) (Timer)
- When the low pressure is less than 3kg/cm
- PUMP DOWN START(Below 0.5kgf/cm
- Indoor unit fan motor trouble(stocked, defect)
- EEV open error
- Shortage of refrigerant
2 G in cooling (1.5kg/cm
- 189 -
(Fan) (Filter) (Removing frost)
(Fan) (Filter) (Removing frost)
2 G and re-start the compressor after 3 minutes
(Fan) (Filter) (Removing frost)
2 G for 2 seconds in cooling before
2 G at heating)
2 G in heating) before PUMP DOWN START.
Troubleshooting
2 G at heating)