Troubleshooting - GRE HPGI50 Manuel D'instructions

7. Troubleshooting

7.1 Error code display on LED wire controller
Malfunction
Inlet water temperature
sensor failure d1-TH6
Outlet water temperature
sensor failure d2-TH5
Heating piping sensor failure
d5-TH2
Ambient temperature sensor
failure d3-TH1
Exhaust piping sensor failure
d6-TH3
Antifreeze protection in
Winter
Low ambient temperature
protection
High pressure failure TS4
Error
Reason
code
1. The sensor in open or short circuit
PP01
2. The wiring of sensor is loose
1. The sensor in open or short circuit
PP02
2. The wiring of sensor is loose
1. The sensor in open or short circuit
PP03
2. The wiring of sensor is loose
1. The sensor in open or short circuit
PP05
2. The wiring of sensor is loose
1. The sensor in open or short circuit
PP06
2. The wiring of sensor is loose
Ambient temperature or water inlet
PP07
temperature is too low
1. Out of the normal operating
ambient temperature for this
PP08
machine by checking d3
2. Sensor abnormality d3-TH1
1. Ambient temperature is too high
2. Water temperature is too high
3. Water flow is too low
4. Fan motor speed is abnormal
EE01
5. Gas system jammed
6. High pressure wire is loose or
damaged
7. Too much refrigerant
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 the d1((inlet water temp.) and
d3(outlet water temp.)
2. Normal protection
1. Stop using, beyond the scope of using
2.Change the sensor
1. Choose the silent mode.
2. Check the water flow or filtration pump
3. Check and repair the refrigerating
system
4. Reconnect the high pressure wire or
replace a new high pressure switch
5. Check and repair the refrigerating
system
71
Solution