33
6. APPENDICES (continued)
6.4 Troubleshooting guide
Fault Error codes Description Solution
Water inlet sensor fault P01
The sensor is open or has short-
circuited.
Check or replace the sensor.
Water outlet sensor fault P02
The sensor is open or has short-
circuited.
Check or replace the sensor.
Outside temperature sensor fault P04
The sensor is open or has short-
circuited.
Check or replace the sensor.
De-icing sensor fault P05
The sensor is open or has short-
circuited.
Check or replace the sensor.
High pressure protection E01
Refrigerating circuit pressure too
high or water flow too low or coil
obstructed or air flow too weak.
Check the high pressure switch
and the refrigerating circuit
pressure.
Check the water or air flow. Check
the flow controller is working
properly.
Check that the water inlet/outlet
valves are opening.
Check the by-pass settings.
Low pressure protection E02
Refrigerating circuit pressure too
low or air flow too weak or coil
obstructed.
Check the low pressure switch and
the refrigerating circuit pressure to
see if there is a leak.
Clean the coil surface.
Check the fan rotation speed.
Check the free circulation of air
through the coil.
Flow sensor fault E03
Insufficient water flow or sensor
short-circuited or faulty
Check the water flow, check the
filtration pump and flow sensor for
any faults.
Temperature difference too great
between the outlet and inlet water
E06
Insufficient water flow volume,
water pressure difference too
low/too high.
Check the water flow or for a
system obstruction.
Antifreeze protection
Cold mode
E07 Water outlet quantity too low.
Check the water flow rate or the
outlet water temperature sensor.
Communication problem E08
LED controller or PCB connection
fault.
Check the wiring.
Level 1 antifreeze protection E19
Air and inlet water temperature
too low.
Turn off the heat pump and drain
the capacitor. Freezing risk.
Level 2 antifreeze protection E29
Air and inlet water temperature
even lower.
Turn off the heat pump and drain
the capacitor. Freezing risk.
Certain operations must be performed
by an approved engineer.
To Next Page
Loading...
Need help?
General