Heatseeker Nova+ Inverter Heat Pump
Troubleshooting
MALFUNCTIONS
ERROR REASONS
SOLUTIONS
Low ambient temperature
protection
PP08
Ambient temperature or water
inlet temperature is too low
Cooling pipe temperature too high
protection
PP10
Check the system
High pressure failure
EE01
1. Too much refrigerant
2. Ambient temperature or water
temperature is too high
3. Operating frequency is too high
4. Fan motor failure
5. High pressure valve failure
1. Discharge redundant refrigerant
2. Clean the air exchanger
3. Check and re-fix the wiring
connection of high pressure
switch
4. Replace the new high pressure
switch
Low pressure failure
EE02
1. Not enough refrigerant
2. Not enough water flow
3. Filter or capillary jammed
4. EEV failure
5. Fan motor failure
6. Low pressure switch failure
1. Check if there is any gas leakage,
re-fill the refrigerant
2. Clean the air exchanger
3. Replace the filter or capillary
4. Check and re-fix the wiring
connection of low pressure
switch
5. Replace the low pressure switch
Water flow failure
EE03
Low water flow, wrong flow
direction, or flow switch failure.
1. Check if the water flow is high
enough
2. Check if the water flow switch
was installed in correct direction
3. Check the wiring of water flow
switch
4. Replace the new water flow
switch
T2 Water temperature overheating
under heating mode
EE04
Water flow low or no water
1. Check and repair the water
pump
2. Clean the water pipe system
3. Check the water flow switch
T6 Gas exhaust too high protection
EE05
1. Defrosting is inadequate
2. Insufficient gas
3. The throttling device is jammed
4. Low water flow
1. Manual defrosting
2. Add the gas
3. Change the throttling device
4. Check the water pump
Controller failure
EE06
1. Wire connection faulty
2. Controller failure
1. Check or change the signal wire
2. Restart the power supply
3. Change the controller
Compressor current protection
EE07
The compressor current is too large
instantaneously
