32
Code
Anomalies
Causes possibles
Actions
FLO
Flow sensor malfunction
Not enough water in the exchanger
Check the good circulation of water in the heat pump, and the
opening of the inlet / outlet valves of the By Pass
Sensor disconnected or defective
Reconnect or replace the sensor
AL01
Discharge temp. sensor failure
Sensor disconnected or defective
Reconnect or replace the sensor
AL02
Suction temp. sensor failure
Sensor disconnected or defective
Reconnect or replace the sensor
AL03
Malfunction of the inlet water temperature sensor
Sensor disconnected or defective
Reconnect or replace the sensor
AL04
Water outlet temperature sensor malfunction
Sensor disconnected or defective
Reconnect or replace the sensor
AL06
Ambient temperature sensor malfunction
Sensor disconnected or defective
Reconnect or replace the sensor
AL07
Connection problem between the electronic card
and the wired remote control
Bad connection
Check the connection cables between the remote control and the
electronic card
Wired remote control defective
Replace the remote control
Defective electronic board
Replace the electronic card
AL08
EEPROM failure
Main PCB failure
replace PCB
EEPROM not correct
Update new EEPROM
AL09
Fan motor failure
Fan motor failure
Check or replace fan motor
PCB failure
Check or replace PCB
Fan blade failure
Check or replace fan blade
AL11
/
AL12
High and low presure switch failure
Gas system blocked
Check the gas system
Fan motor failure
Check fan motor
Gas leakage
check the gas amount
Pressure switch failure
check or replace pressure switch
AL14
ambient temp. protection
Out of operating range
turn off the machine
sensor failure
check or replace new sensor
AL15
Water temperature too high at the outlet for heating
mode
Insufficient water flow
Check the good circulation of water in the heat pump, and the
opening of the inlet / outlet valves of the By Pass
AL17
Evaporator temperature too high (> 60 ° C) for
cooling mode
The fan does not work or the air inlets / outlets are blocked
Check the correct operation of the fan
Refrigerant overload
Readjust the refrigerant charge
AL18
Exchanger sensor malfunction
Sensor disconnected or defective
Reconnect or replace the sensor
AL19
Supply voltage too high / Low
Feeding problem
Review the power to the heat pump
AL20
Power supply too high / Low
Feeding problem
Review the power to the heat pump
AL21
Incorrect internal voltage
Incorrect power cabling
Review the device connection diagram
AL22
Compressor malfunction
AL23
IPM malfunction
AL24
Motherboard malfunction
AL28
Protection of the inverter module
Restart the heat pump
If the problem persists, replace the inverter module
AL29
Frost protection in standby
AL30
Water outlet temperature too high
AL31
Exchanger temperature too high
AL32
Exchanger sensor malfunction
7. Repairs
7.3 List of faults
8. Recycling
