Harmopool QBIC, Instruction Manual

Page: 18 / 20

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