9. Error codes & Solutions
Check the water circuit system, the opening
of by-pass kits, the running of water pump
Water flow switch disconnected
Check the wiring and reconnect water flow
switch
Water flow switch defective
Ambient/Inlet water temp. is too
low and the unit is on standby
The unit will be re-started when the
ambient/inlet water temp. goes up.
Check the water circuit system, the opening
of by-pass kits, the running of water pump
Ambient/ Water temp. is too high
Fan motor speed is abnormal or fan
motor has damaged
Readjust the refrigerant volume
High pressure switch disconnected
or defective
Reconnect or replace high pressure switch
Check the installation circumstance. Clean
the evaperator. Check the running situation
of fan.
Low pressure switch disconnected
or defective
Reconnect or replace low pressure switch
Gas leakage (Check the gauge)
Detect the leakage point and make the
maintainence
Fan motor speed is abnormal or fan
motor has damaged
EEV blocked or piping system
jammed
Connection failure between PCB
and controller
Communication failure between
PCB and driver module
Check the water circuit system/ water flow
switch
Check if there is a gas leakage
Exhause piping temp. sensor
(Purple connector) detective
Inlet water temp. sensor (Blue
Sensor disconnected or defective
Reconnect or replace sensor
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