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Water flow detection
The heat pump only operates whenever there is water flow circulating inside. All models are equipped with a water
flow switch that detects if the water pump is working or not.
“
flow” LED lighting = water pump working.
“flow” LED not lighting = water pump stopped.
Internal parameters
Button
serves to check the internal parameters. These parameters may only be modified by professionals.
When the machine is displaying internal parameters, the icon
will be shown.
Controller state table
Screen
Explanation
Check
Solution (if no reset)
St-by
Stand-by
-
-
FLO
No water flow or the flow switch
doesn’t detect the water flow
- Check if filtration pump is
working.
- Check by-pass setting.
- Check water flow switch position.
Contact your seller
AL10 / AL11
HP error
AL15 / AL16
Too much temperature difference
between water in and water out.
AL18
Comp. Out temp. Too high
AL17
Low temp protection in cooling
mode
AL7 / AL8
Communication error
Check
electrical
connection
between controller and electronic
card inside the machine.
AL3
Probe error (Water in)
Check probe connection.
AL4
Probe error (Water out)
AL5
Probe error (coil.)
AL1
Probe error (comp. out)
AL2
Probe error (comp. in)
AL6
Probe error (ambiance)
AL9
Fan error
Check fan connection.
AL14
Outdoor temperature too low
Outdoor temp is below -15°C
Wait
for
the
outdoor
temperature to increase.
AL19 / AL20
Power supply problem
Ask an electrician specialist to
check power supply.
Contact your seller
AL21 / AL22 / AL23 /
AL24 / AL25
Electronic/overheating protection
Stop the power supply for 5 to 10
minutes, check that air flow is not
blocked, turn ON power supply
EN
