8.1 Error code display on LED wire controller
Malfunction
Inlet
water
temperature
failure
Outlet water temperature sensor
failure
Heating piping sensor failure
Gas return sensor failure
Ambient temperature sensor failure
Exhaust piping sensor failure
Antifreeze protection in Winter
Low ambient temperature protection
Piping temperature too high
protection under cooling mode
T2
water
temp.
Too
protection under cooling mode
High pressure failure
8.
Troubleshooting
8.
8.
Troubleshooting
Troubleshooting
Error code
1. The sensor in open or short circuit
sensor
PP01
2.
1. The sensor in open or short circuit
2. The wiring of sensor is loose
PP02
1. The sensor in open or short circuit
2. The wiring of sensor is loose
PP03
1. The sensor in open or short circuit
2. The wiring of sensor is loose
PP04
1. The sensor in open or short circuit
2. The wiring of sensor is loose
PP05
1. The sensor in open or short circuit
2. The wiring of sensor is loose
PP06
Ambient temperature or water inlet
PP07
temperature is too low
1.Beyond the scope of using
environment
PP08
2. Sensor abnormality
1. Ambient temperature is too
high or the water temperature
is too high in cooling mode
PP10
2. Refrigeration system is
abnormal
1. Low water flow
2. T2 temperature sensor
low
PP11
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
The wiring of sensor is loose
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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
1. Check water pump and 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