There Is No Hot Water; The Dhw Is Too Hot; Flashes And "Fault" Is Displayed - Viessmann B2HAH13 Operating Instructions Manual

Vitodens 200-W B2HA/B2HB, 222-F B2TA/B2TB Operating

There is no Hot Water

Cause
The heating system is off.
Control unit or remote control incorrectly adjusted.
No fuel.
"Fault" is displayed, and the red fault indicator flashes.

The DHW is too Hot

Cause
The control unit is incorrectly adjusted.
"

" Flashes and "Fault" is Displayed


Cause
Heating system fault.
Remedy
- Switch the ON/OFF switch ON (see diagrams page 15).
- Switch ON the mains isolator, if installed (outside the
boiler room).
- Reset the fuse/MCB in the power distribution board
(main domestic fuse/ MCB).
Check settings and correct if required:
- DHW heating must be enabled (see page 22).
- DHW temperature (see page 22).
- Time program (see page 23).
- Time (see page 28).
With liquid propane gas:
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 32).
If necessary, notify your heating contractor.
Remedy
Check and correct the DHW temperature if required
(see page 22).
Remedy
Proceed as described (see page 32).
Troubleshooting
35