Troubleshooting
Samsung Electronics
4-45
4-3-23 High Pressure sensor error (Open/Short)
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
Replace High Pressure sensor
Please re-inspect after connecting
the connector to the PCB
No
Yes
High pressure sensor
connector (CN42) connected
to PCB?
Refill refrigerant after vacuum
No
Yes
Is there refrigerant inside the set?
(Please check by connecting the Manifold gauge
to the service valve)
Replace PCB
No
Yes
High pressure sensor
terminal of PCB : Is the voltage between
3 and 4 pins 5V?
The
▼
mark is the 1st pin on the PCB.
Outdoor unit
display
Indoorunit
display
Duct, Cassette (1/2 Way),Console, Celing
Cassette (4/Mini4 Way)
Wall-mounted (NeoForte)
Operation Defrost
Timer
Fan Filter/MPI Operation Defrost
Timer Filter Operation Timer
Turbo
×
×
◑
◑
◑
×
◑
◑
◑
●
◑
◑
※ ●
: ON
◑
: Flash ×: OFF
Judgment
Method
∙ Refer to the judgment method below.
Cause of
problem
∙ Disconnection or breakdown of relevant sensor.