48
Cause Remedy
The heating system is switched off.
■
Switch ON the ON/OFF switch (see page 27).
■
Switch ON the mains isolator if installed (outside the
boiler room).
■
Set the MCB in the power distribution board (main do-
mestic MCB).
■
Control unit incorrectly adjusted.
■
The remote control (if installed) is set incorrectly.
Separate operating instructions
Central heating must be enabled.
Check the settings and correct if required:
■
Operating program (see page 15)
■
Room temperature (see page 29)
■
Time (see page 42)
■
Time program, central heating (see page 30)
■
Heating curve (see page 30)
The DHW cylinder is being heated. Wait until the DHW cylinder has been heated up.
Reduce the DHW draw-off rate or temporarily reduce
the DHW temperature as required.
No fuel. For operation with LPG:
Check the fuel reserves and re-order if required.
For operation with natural gas:
Open the gas shut-off valve. If necessary, check with
your gas supply utility.
"Burner fault" is displayed. Press button R (see page 27).
Acknowledge the fault (see page 45).
Danger
If faults are not rectified, they can have life
threatening consequences.
Do not acknowledge fault messages several
times in quick succession. Notify your heating
contractor if a fault recurs. Your heating contrac-
tor will be able to analyse the cause and rectify
the fault.
"Fault" is displayed. The red fault indicator flashes. Check what type of fault it is. Acknowledge the fault
(see page 45). If necessary, notify your heating contrac-
tor.
"Screed drying" is activated. No action required.
After expiry of the screed drying time, the selected op-
erating program will become active.
The mixer motor is faulty. Adjust the mixer manually.
In conjunction with a mechanical ventilation unit:
■
Bypass does not close.
■
Preheating coil faulty.
■
Supply/extract air fan faulty.
Notify your heating contractor.
What to do if...
Rooms are too cold
5811580
To Next Page
Loading...
