Harmopool QBIC - Troubleshooting Common Problems

18
Problems and solutions
Malfunction
Controller
display
Reason
Resolution
Water in temp.
sensor failure
PP 01
The sensor is open or
short circuit
Check or replace a new sensor
Water out temp.
sensor failure
PP 02
The sensor is open or
short circuit
Check or replace a new sensor
Coil sensor failure
(heating mode)
PP 03
The sensor is open or
short circuit
Check or replace a new sensor
Gas return sensor
failure
PP 04
The sensor is open or
short circuit
Check or replace the sensor
Ambient sensor failure
EE 06
Ambient temp. is
below 8 or the sensor
is open or short circuit
Stop the unit when ambient is
below 8 Check or replace the
sensor
℃
Temp. too much
difference between
water-in and water-out
PP 06
Water volume is not
enough
Increase water volume
Anti -freezing under
cooling mode
PP 07
Ambient temp.too low
The first time freezing
protection in winter
PP 07
Ambient temp.too low
The second time
freezing protection in
winter
PP 07
Ambient temp.too low
Coil sensor failure
(cooling mode)
PP 08
The sensor is open
or short circuit
Check or change the sensor
High pressure
protection
EE 01
Refrigerant system
pressure is high
Check pressure gauge,
increase the water volume
Low pressure protection
EE 02
Refrigerant system
pressure is low
Check pressure gauge, refeed
refrigerant
Flow switch failure
EE 03
No water/little water
in water system.
Check the water flow volume,
water pump failure or not
Power supply
connections wrong
(for 3phase unit)
EE 04
Wrong phase or
lack of phase power
connection
Check connections of power
cable
3times display PP06
(temp. too much
difference between
water-in&out) in 30 min
EE 05
Water flow volume
not enough, water
pressure difference is
too low
Check the water flow volume,
or water system is jammed or
not
Communication failure
EE 08
Wire controller and
the PCB connection
failure
Check the wire connection