72
Overview Installation Use
Servicing, Maintenance and Troubleshooting
The water heater ishould be drained if the absence mode cannot be used or when the appliance is switched
off. Proceed as follows:
1. Tips for the user.
The appliance must be switched off before opening the covers.
Maintenance Warranty
Cut the power supply.
Open a hot water tap.
Close the cold water inlet.
Open the drain tap of the safety
unit.
❶
❸
❷
❹
In order to maintain the performance of your water heater, you must regularly service your appliance.
2. Servicing.
By the USER:
Operate the safety valve.
Check that water is flowing correctly.
Check the general condition of the appliance: No Error
code, no water leakage by the connections, etc.
that the water heater is connected to the ducts.
that the ducts are positioned correctly and
the cleanliness of the condensate drain pipe.
that there are no loose wires in the internal
wiring and that all connectors are in place.
that the electrical backup is working properly
the feed water of the water heater is scaling,