Polytropic XXS Betriebsanleitung Seite 27

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
Controller state table
Screen
St-by Stand-by
No water flow or the flow switch
FLO
doesn't detect the water flow
AL10 / AL11 HP error
Too much temperature difference
AL15 / AL16
between water in and water out.
AL18 Comp. Out temp. Too high
Low temp protection in cooling
AL17
mode
AL7 / AL8 Communication error
AL3 Probe error (Water in)
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
AL14 Outdoor temperature too low
AL19 / AL20 Power supply problem
AL21 / AL22 / AL23 /
Electronic/overheating protection
AL24 / AL25
Explanation
-
- Check if filtration pump is
working.
- Check by-pass setting.
- Check water flow switch position.
Check
between controller and electronic
card inside the machine.
Check probe connection.
Check fan connection.
Outdoor temp is below -15°C
Ask an electrician specialist to
check power supply.
Stop the power supply for 5 to 10
minutes, check that air flow is not
blocked, turn ON power supply
will be shown.
Check
electrical connection
- 27 -
Solution (if no reset)
-
Contact your seller
Wait for the outdoor
temperature to increase.
Contact your seller