36
Cause Remedy
Symbols and are shown, and
message code 0C, A0, CC, F10, F18,
F30, F38, F51, F59, F70, F78, F80, F88,
F90 or F98 is flashing.
Notify your heating contractor.
No fuel. Open the gas shut-off valve.
If necessary
, check with your gas supply
utility.
Rooms are too hot
Cause Remedy
■ Control unit incorrectly adjusted.
■ The room temperature controller (if in-
stalled) is set incorrectly
.
Separate operating instructions
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)
What to do if...
Rooms are too cold (cont.)
5837147
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