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4.3.2
4.3.3
24
Note
If the water heater is in OFF mode for more than 2 months and no water is drained, air
bubbles may be formed in the water heater. This can lead to air in the water pipes.
Isolate from the mains
To isolate the water heater from the mains:
1.
Set parameter 001 to OFF, refer to Set a parameter value (see 4.1).
2.
Wait 1 minute to make sure that the water heater stopped operating.
3.
Set the control switch to 0.
4.
Disconnect the water heater from the mains by turning the isolator.
Turn off for a long period
When the water heater needs to be turned off for more than 2 months, contact your
service and maintenance engineer to decommission the water heater.
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