High Pressure Sensor Error (Open/Short); Detection Of High/Low Pressure Sensor Error; Low Pressure Sensor Error (Open/Short) - Samsung DVM Series Service Manual

8-2-18. High pressure sensor error (open / short)
Outdoor unit display
Indoor unit display
Judgment method
Causes

Detection of high/low pressure sensor error

1. Skips the detection during the oil recovery operation and detects again from 5 minutes after completion of
the operation.
2. Skips the detection during the safety start operation and detects again from 5 minutes after the completion
of the operation.
3. Skips the detection during the removing frost operation and detects again from 5 minutes after the
completion of the operation.
4. Detection of the short error: less than 0.5V
5. Detection of open error : over 4.2 V
6. Skips the detection of the low pressure error during charge/recovery of refrigerant
8-2-19. Low pressure sensor error (open / short)
Outdoor unit display
Indoor unit display
Judgment method
Causes
Detection of high/low pressure sensor error
1. Skips the detection during the oil recovery operation and detects again from 5 minutes after completion of
the operation.
2. Skips the detection during the safety start operation and detects again from 5 minutes after the completion
of the operation.
3. Skips the detection during the removing frost operation and detects again from 5 minutes after the
completion of the operation.
4. Detection of the short error: less than 0.5V
5. Detection of open error : over 4.2 V
6. Skips the detection of the low pressure error during charge/recovery of refrigerant
(Operation) (Timer)
- Wire open or short of outdoor high pressure
- Wire open or defect of related sensor
(Operation) (Timer)
- Wire open or short of outdoor low pressure
- Wire open or defect of related sensor
- 185 -
(Fan) (Filter) (Removing frost)
(Fan) (Filter) (Removing frost)
Troubleshooting