Refrigerant Leakage Error - Samsung AG042KSVANH Service Manual

4-3-27 Refrigerant leakage error

Outdoor unit
display
Judgment
∙ Before starting : Before compressor starting after system halt 2 minutes (High & low pressure sensor Open / Short error occurs and 1kg/cm2 or less)
∙ When start : When the high pressure sensor value(cooling 3.1 kgf/cm
Method
Cause of
∙ Refrigerant leakage and shortage
∙ Disconnection or breakdown of high & low pressure sensor
problem
1. 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 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 Pressure
sensor terminals, is there voltage between
pins 3 and 4 5V?
Replace Pressure sensor.
(Refrigerant leakage judgment before starting)
(When start, refrigerant leakage judgment)
Yes
Yes
Yes
2 , heating 2.2 kgf/cm 2 ) is detection continuously for 3 seconds
No
No
No
67
Please re-inspect after connecting
the connector to the PCB.
Refill refrigerant after vacuum.
Replace PCB.
The mark is the 1st pin on the PCB.