Troubleshooting
Samsung Electronics9-9
■
: Start prohibition by refrigerant pressure error
1. Check Method
1) Check the pressure of system by Manifold Gauge at the state of the system being stopped.
2) Read the price of high pressure sensor by use of View mode or S-net.
3) If the prices of 1 and 2 are similar, the most of refrigerant is leaked. Discharge the remainder refrigerant, re-vacuum and
recharge the refrigerant.
4) If the prices of 1 and 2 are very different, the contact of connector part or the sensor is defective. Check and exchange
them if necessary.
Outdoor unit display
Indoor unit display (Operation) (Timer) (Fan) (Filter) (Defrost)
Do not start when the price of high pressure sensor of main unit becomes below 3.1kg/cm
2
G
on cooling or it becomes below 2kg/cm
2
G on heating during 3 seconds in continuation before
Pump down start.(Restart is impossible, and Error message is indicated in the indoor unit.)
Causes Refrigerant leaking / High pressure sensor error
• Above error can be occurred because pressure is low on the low pressure side according to the refrigerant is
only gathered at the outdoor heat exchanger after pump-down. In this case, after correctly connecting the
pipe to the indoor unit and open the service valve, refrigerant circulates to the low pressure side; thus, the
error is disappeared.
Judgment method
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