What To Do If; Rooms Are Too Cold; Rooms Are Too Hot - Viessmann VITOTROL 300 RF Operating Instructions Manual

Rooms are too cold

Cause
Remote control set incorrectly.
Only when operating with DHW heating:
DHW priority is enabled.
No fuel.
"Fault" is displayed.

Rooms are too hot

Cause
Remote control is incorrectly adjusted.
"Fault" is displayed.
Remedy
Check settings and correct if required:
■ "Heating and DHW" must be se-
lected (see page 20)
■ Room temperature (see page 19).
■ Time (see page 32).
■ Time program (see page 13)
Wait until the DHW cylinder has been
heated up.
In the case of operation with an instanta-
neous water heater, stop DHW draw-off.
With oil/LPG:
Check the fuel reserves and re-order if
required.
With natural gas:
Open the gas shut-off valve. If necessary,
check with your gas supply utility.
Scan and acknowledge the type of fault
(see page 37). If necessary, notify your
heating contractor.
Remedy
Check settings and correct if required:
■ Room temperature (see page 19).
■ Time (see page 32).
■ Time program (see page 13)
Scan and acknowledge the type of fault
(see page 37). If necessary, notify your
heating contractor.

What to do if...

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