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5. MAINTENANCE AND INSPECTION
Malfunction Table
The common failure cause and solution.
Malfunction
Water inlet temp. Sensor failure
Water outlet temp. Sensor failure
Ambient temp. Sensor failure
Pipe temp. Sensor failure
Evaporator temp.Sensor failure
High pressure protect
Low pressure protect
Flow switch failure
Temp. is too much different
between water-inlet and outlet
Antifreezing under cooling mode
The primary anti-freezing
protection start.
The second anti-freezing
protection start
Communication failure
Display
Canse
The water inlet temp. Sensor is
P01
open or short circuit
The water outlet temp. sensor is
P02
open or short circuit
The ambient temp. sensor
P04
is open or short circuit
The pipe temp. sensor is
P05
open or short circuit
The evaporator temp. Sensor is
P07
open or short circuit
The exhaust pressure is high ,
E01
high pressure switch action
The suction pressure is low,
E02
Low pressure switch action
No water or litter water
E03
in water system
Water flow volume not enough,Water
E06
system pressure difference is small
E07
Water flow volume not enough
E19
Ambient temperature is too low
E29
Ambient temperature is too low
Communication failure between remote
E08
wire controller and main board
18
Solution
Check or change the water
inlet temp. Sensor
Check or change the water
outlet temp. Sensor
Check or change the
ambient temp. Sensor
Check or change the pipe temp. Sensor
Check or change the
evaporator temp. Sensor
Check high pressure switch
and cooling return circuit
Check low pressure switch and
cooling return circuit
Check the flow volume ,water
pump is failure or not
Check the flow volume,water
system is jammed or not
Check the flow volume,water
system is jammed or not
Check the wire connection between
remote wire controller and main board
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