Maintenance
AirX, AirModule E 9/15, Airbox E/S – 6 720 810 266 (2014/10)
10
5.8 Pressure Switch and Overheat protection
If the pressure switch has tripped resets itself when the pressure is
sufficient in the system.
▶ Check the pressure gauge.
▶ If the pressure is below 0.5 bar, slowly increase the pressure in the
heating system by adding water to the filling valve to a maximum of 2
bar.
▶ Contact the installer or retailer if you are unsure of how to proceed.
To reset the overheat protection on AirModule:
▶ Pull out the front cover by the bottom and lift it off upwards.
▶ Press the button hard on the overheating protection.
▶ Put the front cover back.
To reset the overheat protection on AirBox E:
▶ Contact the installer or retailer
Fig. 6 AirBox E
[1] Pressure gauge
Pressure switch and overheat protection are only in heat
pump module with integrated electrical supplement.
Overheat protection must be manually reset if it trips.
The pressure switch and overheat protection are
connected in series, triggered alarm or information in
the controll unit means either low pressure in the system
or to high temperature in the additional heater.
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