23
5.2 I Error code display
Display
Fault
Possible causes
Solutions
A11
Low-pressure fault
- circuit 1
A13
Low-pressure fault
- circuit 2
No signal from the low-pressure
switch
Defective pressure switch, replace if
necessary
Leak in the cooling circuit
Call a qualified technician.
Blocked evaporator, air flow too
low
Remove any dirt or obstacles from the
evaporator blocking the air flow
Frost on the evaporator
Check that the 4-way valve is
operating correctly
Fan operation problem
Check that the fan is operating
correctly, replace it if necessary
Regulator valve closed
Defective regulator (or its
controller), replace if necessary.
A12
High-pressure fault
- circuit 1
A14
High-pressure fault
- circuit 1
No signal from the high pressure
switch
Defective pressure switch, replace if
necessary
Insufficient water flow
Increase flow using the by-pass,
check that the pool filter is not clogged
Cooling circuit fault
Check the cooling circuit
A15
Water flow
controller
Water flow problem
•
Check that the flow rate is sufficient
•
Check that the pump is working
•
Check the flow switch
A21
Water inlet
temperature
sensor fault
Sensor is faulty or offline
Reconnect or change the sensor
A22
Evaporation
sensor 1 fault
Sensor is faulty or offline
Reconnect or change the sensor
A23
Evaporation
sensor 2 fault
Sensor is faulty or offline
Reconnect or change the sensor
A24
Compressor 1
discharge sensor
fault
Sensor is faulty or offline
Reconnect or change the sensor
Discharge temperature too high
A25
Compressor 2
discharge sensor
fault
Sensor is faulty or offline
Reconnect or change the sensor
Discharge temperature too high
A26
A26
Circuit 1 suction
sensor fault
Sensor is faulty or offline
Reconnect or change the sensor
A27
A27
Circuit 2 suction
sensor fault
Sensor is faulty or offline
Reconnect or change the sensor
A28
Outside air
temperature
sensor fault
Sensor is faulty or offline
Reconnect or change the sensor
A29
Water outlet
temperature
sensor fault
Sensor is faulty or offline
Reconnect or change the sensor
EN
Summary of Contents for WH000456
Page 2: ......
