Trouble Shooting - ALLIANCE ALLPH35R410 Installation & Operation Manual

5. M A I N T EN A NC E A ND I N S PE CT I ON

5.2 .Trouble Shooting

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. difference between water-inlet and
outlet too high
Antifreezing under cooling mode
The primary anti-freezing protection start.
The second anti-freezing protection start
Communication failure
COMMON FAILURE CAUSE AND SOLUTION
DISPLAY CANSE
The water inlet temp. sensor is open or
P01
short circuit
The water outlet temp. sensor is open or
P02
short circuit
The ambient temp. sensor is open or short
P04
circuit
The pipe temp. sensor is open or short
P05
circuit
The evaporator temp. sensor is open or
P07
short circuit
The exhaust pressure is high , high
E01
pressure switch action
The suction pressure is low, low pressure
E02
switch action
E03 No water or litte water 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
E0B
wire controller and main board
SOLUTION
Check or change thewater inlet temp.
sensor
Check or change thewater 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
Check the flow volume, water system is
blocked
Check the flow volume. Water system is
blocked
Check the wire connection between remote
wire controller and main board
19