72
1. Strong wind or typhoon below toward to the fan, to make the
fan running in the opposite direction. Change the unit direction
or make shelter to avoid typhoon below to the fan.
2. Fan motor is broken, change a new fan motor.
The DC fan failure
1. Check whether the power supply input is in the available
range.
2. Power off and power on for several times rapidly in short time.
Remain the unit power off for more than 3 minutes than power
on.
3. The circuit defect part of Main control board is defective.
Replace a new Main PCB.
Voltage protection
1. Pressure sensor connector is loosen, reconnect it.
2. Pressure sensor failure. change a new sensor.
Pressure sensor failure
Refer to P0
Low pressure protection in
cooling Pe
＜
0.6 occurred 3
times in an hour
Refer to H6
H6 displayed 10 times in 2
hours
1. The EEprom parameter is error, rewrite the EEprom data.
2. EEprom chip part is broken, change a new EEprom chip
part.
3. Inverter module board is broken, change a new PCB.
Inverter module board EE
prom failure
1. System is lack of refrigerant volume. Charge the refrigerant
in right volume.
2. When at heating mode or DHW mode, the outdoor heating
exchanger is dirty or something is block on the surface. Clean
the outdoor heating exchanger or remove the obstruction.
3. The water flow is too low in cooling mode.increase the water
flow.
4. Electrical expansion valve locked or winding connector is
loosen. Tap-tap the valve body and plug in/ plug off the
connector for several times to make sure the valve is working
correctly.
Low pressure switch protection
EN
IDOLA M 3.2
04÷16T
CAUTION
34
Ethylene Glycol and Propylene Glycol are TOXIC
WARNING
NOTE
During filling, it might not be possible to remove all air in the system. Remaining air will be removed through the
automatic air purge valves during the first operating hours of the system. Topping up the water afterwards might be
required.
The water pressure will vary depending on the water temperature (higher pressure at higher water temperature).
However, at all times water pressure should remain above 0.3 bar to avoid air entering the circuit.
The unit might drain-off too much water through the pressure relief valve.
Water quality should be complied with EN 98/83 EC Directives.
Detailed water quality condition can be found in EN 98/83 EC Directives.
Connect the water supply to the filling valve and open the valve.
Make sure the automatic air purge valve is open (at least 2 turns).
Fill with water pressure of approximately 2.0 bar. Remove air in the circuit as much as possible using the air purge
valves. Air in the water circuit could lead to malfunction of the backup electric heater.
9.5 Filling water
Do not fasten the black plastic cover on
the vent valve at the topside of the unit
when the system is running. Open air
purge valve, turn anticlockWise at least
2 full turns to release air from the
system.
CounterclockWise rotation, remove the flow switch.
Drying the flow switch completely.
When the unit is not running for a long time, make sure the unit is powered on all the time. If you want to cut off the
power, the water in the system pipe needs to be drained clean to avoid the unit and pipeline system being damaged by
freezing. Also the power of the unit needs to be cut off after water in the system is drained off.
Cod. 3QE47850 - Rev. 00 - 03/2022