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Vaillant ecoTEC plus 837 Manual

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14 Instructions for use ecoTEC
4.10 Frost protection
The frost protection feature only protects the boiler. Any
other parts of the system liable to frost damage should
be protected accordingly.
Caution
The frost protection and monitoring systems
are only active when the main ON/OFF control
of the appliance is in the “I” position and it is
not disconnected from the main power supply.
Frost protection function
The boiler has a frost protection function.
If the heating flow temperature falls below 5 °C with the
main ON/OFF control turned on, the appliance starts up
and heats the boiler to 30 °C.
Caution
Parts of the system may freeze.
The frost protection function cannot guarantee
that water flows through the entire heating sys-
tem.
4.11 Maintenance and customer service
Inspection and maintenance
Permanent operational readiness, reliability and a long
service life require inspections and maintenance work to
be regularly carried out by a heating engineer or
Vaillant.
For further details please contact Vaillant Service
Solutions: (0870 6060777).
Danger
Risk of injury and damage due to improper
handling
Never attempt to perform maintenance or
repairs on the appliance yourself.
Have a specialist heating company do the work.
We recommend signing a service agreement.
The reliability of the appliance can be impaired,
resulting in damage to property or personal
injury if maintenance work is not carried out.
Regular servicing ensures maximum efficiency and eco-
nomical operation of your gas wall heater.
4 Operation
… 14


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  • I have a Vaillant ecoTEC plus 837. The control panel is quite different to the on line manuals. There is one Contol panel window and 2 sets of +/- buttons below. There is also a small button displaying a flame. The power is on (can hear fan) but NOTHING on the control button.....and NO heating!
    Can anyone enlighten/ help me? Submitted on 10-2-2022 at 19:03

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