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TROUBLESHOOTING
1
/4
[] ~ [] Excessively Low Suction Pressure
!
In case of the suction pressure is less than 0.31 Mpa during 90 seconds, the unit will stop at once and indicate
"[
]
[
]". 3 minuts later, the unit will start again. This Alarm code is indicated when it occurs 3 times during 30
~
minutes (It will retry until 2 times.).
Is connector CN 29Ps on the
printed circuit board for relay
(PCB
) correctly connected?
D
Wiring Check
Yes
No
Shortage of Refrigerant Gas Leakage
Clogging of expansion valve
Clogging of strainer
Clogging of low pressure side pipe
Stop Valve malfunction
Shortage of Water
Pump reverse rotation
Air mixed
Deposits on Water Cooler Plates
Clogging of Water Strainer
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