Rooms Are Too Hot - Viessmann VITOPEND 100-W Operating Instructions Manual

What to do if...
Rooms are too cold
Cause
Symbols and
message code 0C, A0, CC, F10, F18,
F30, F38, F51, F59, F70, F78, F80, F88,
F90 or F98 is flashing.
No fuel.

Rooms are too hot

Cause
■ Control unit incorrectly adjusted.
■ The room temperature controller (if in-
stalled) is set incorrectly.
Separate operating instructions
36
(cont.)
are shown, and
Remedy
Notify your heating contractor.
Open the gas shut-off valve.
If necessary, check with your gas supply
utility.
Remedy
Central heating must be enabled.
Check the settings and correct if re-
quired:
■ Operating program (see page 20)
■ Room temperature (see page 18)
■ Time program, central heating (see
page 20)
■ Heating curve (see page 24)