Samsung AVMKH020EA0 Service Manual page 186

8-2-3. COND DOWN due to the SUMP control
Outdoor unit display
Indoor unit display
Judgment method
Causes
✳ After leaving the outdoor unit for one hour before test operation compare COND sensor temperature with that of OATS, and if COND sensor
temperature is 10°C higher, it is sensor defect. Replace the COND sensor.
Error reset(KEY 3)
Is obstacles at
the air inlet/outlet of
outdoor air?
No
Check the fan motor
capacitor and wire
Yes
Test operation (KEY 4)
Fan motor running smoothly?
Yes
Is COND sensor temperature
normal?
No
Is high pressure normal?
Yes
Since it is the COND sensor
failure, replace the COND sensor.
(Operation) (Timer)
- Stop and re-start when condensate temperature of compressor is 95°C. System
- down error when detection is made 6 times(counter cleared if no detection for 1 hour)
- Outdoor fan motor trouble(stocked, defect)
- Fan motor capacitor defect or wire open/COND sensor defect
- Polluted outdoor heat exchanger
- 185 -
(Fan) (Filter) (Removing frost)
Yes
Remove the obstacles.
No
Check the wire and replace the
capacity if necessary
Check the stock and abnormality and
No
replace the fan motor
if necessary.
Yes
System check completed.
No
Wash the outdoor heat exchanger
and remove obstacles around the
outdoor unit and retry.
Troubleshooting