8.1 Error code display on LED wire controller
Malfunction
Inlet
water
temperature
sensor failure
Outlet
water
temperature
sensor failure
Heating piping sensor failure
Gas return sensor failure
Ambient temperature sensor
failure
Exhaust
piping
sensor
failure
Antifreeze
protection
Winter
Low ambient temperature
protection
Piping temperature too high
protection
under
cooling
mode
T2 water temp. Too low
protection
under
cooling
mode
High pressure failure
8.
8.
8.
Troubleshooting
Troubleshooting
Troubleshooting
Error code
1. The sensor in open or short
PP01
circuit
2. The wiring of sensor is loose
1. The sensor in open or short
PP02
circuit
2. The wiring of sensor is loose
1. The sensor in open or short
PP03
circuit
2. The wiring of sensor is loose
1. The sensor in open or short
PP04
circuit
2. The wiring of sensor is loose
1. The sensor in open or short
PP05
circuit
2. The wiring of sensor is loose
1. The sensor in open or short
PP06
circuit
2. The wiring of sensor is loose
in
Ambient temperature or water
PP07
inlet temperature is too low
1.Beyond the scope of using
PP08
environment
2. Sensor abnormality
1. Ambient temperature is too
high or the water temperature is
PP10
too high in cooling mode
2.
abnormal
1. Low water flow
PP11
2. T2
abnormal
1. Ambient temperature is too
high
2. Water temperature is too high
EE01
3. Water flow is too low
Fan motor speed is abnormal or
fan motor has damaged
Reason
Refrigeration
system
temperature
sensor
- 33 -
Solution
1. Check or change the sensor
2.Re-fix the wiring of the sensors
1. Check or change the sensor
2.Re-fix the wiring of the sensors
1. Check or change the sensor
2.Re-fix the wiring of the sensors
1. Check or change the sensor
2.Re-fix the wiring of the sensors
1. Check or change the sensor
2.Re-fix the wiring of the sensors
1. Check or change the sensor
2.Re-fix the wiring of the sensors
Normal protection
1. Stop using, beyond the scope
of using
2.Change the sensor
1. Check the scope of using
2. Check refrigeration system
is
1. Check
water
waterway system
2. Change T2 temperature sensor
1. Check the water flow or water
pump
2. Check the fan motor
3. Check and repair the piping
system
pump
and