High Pressure Sensor Error (Open/Short) - Samsung AM007FN1DCH/AA Service Manual

4-4-47 High Pressure sensor error (Open/Short)

Outdoor unit display
× ( Operation )
Indoorunit display
∙ Refer to the judgment method below.
Judgment Method
∙ Disconnection or breakdown of relevant sensor.
Cause of problem
1. High Pressure sensor Open/Short error determination method
1) Identifies from when power is supplied or 2 minutes after RESET, and only when set is stopped.
2) An Open/Short error will occur if the input voltage standard range of 0.5V ~ 4.95V is exceeded.
2. Inspection Method
Did the High Pressure
sensor connector get disconnected
from the PCB?
Is there refrigerant inside the set?
(Please check by connecting the menu folder gauge
to the service valve)
Out of the PCB High Pressure
sensor terminals, is there voltage between
pins 3 and 4 5V?
Replace High Pressure sensor
Samsung Electronics
( Reservation ) ( Blast )
Yes
Yes
Yes
( Filter ) × ( Defrost )
No
No
No
The mark is the 1st pin on the PCB.
Troubleshooting
Please re-inspect after connecting
the connector to the PCB
Refill refrigerant after vacuum
Replace PCB
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