Rooms Are Too Hot; There Is No Hot Water; The Dhw Is Too Hot - Viessmann VITODENS 200-W Operating Instructions For The System User

What to do if...

Rooms are too hot

Cause
Incorrect control unit settings.
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The remote control (if installed) or the room tempera-
■
ture controller (if installed) is set incorrectly.
Operating instructions, for the remote control
unit or room temperature controller
"Error message" is displayed.
"Screed drying" is switched on

There is no hot water

Cause
The heat generator is switched off.
Incorrect control unit settings.
■
The remote control (if installed) or the room tempera-
■
ture controller (if installed) is set incorrectly.
Operating instructions, for the remote control
unit or room temperature controller
No fuel.
"Error message" is displayed.
"Screed drying" is switched on.

The DHW is too hot

Cause
Incorrect control unit settings.
The hygiene function is switched on.
DHW temperature for solar DHW heating is set too
high.
50
Remedy
Check the settings and correct if required:
Operating program: See page 16.
■
Room temperature/flow temperature: See page 25.
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Time: See page 34.
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Time program for central heating: See page 21.
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Only for weather-compensated operation:
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Heating curve: See page 26.
Only for weather-compensated or constant operation:
■
"Day(s) at home" is switched on: See page 27.
Only for weather-compensated or constant operation:
■
"Extended heating" is switched on: See page 26.
Check what type of fault it is. Make a note of the fault
message and acknowledge the fault: See page 42. If
necessary, notify your contractor.
No action required.
After expiry of the screed drying time, the selected op-
erating program is switched on.
Remedy
Turn on the ON/OFF switch: See page 47.
■
Switch ON the power supply to your system, e.g. at a
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separate MCB/fuse or mains isolator.
DHW heating must be enabled.
Check the settings and correct if required:
Operating program: See page 16.
■
DHW temperature: See page 31.
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Time: See page 34.
■
Time program for DHW heating: See page 24.
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Only for weather-compensated or constant operation:
■
"Holiday" is switched on for all heating circuits: See
page 29.
Open the gas shut-off valve. If necessary, check with
your gas supply utility.
Check what type of fault it is. Make a note of the fault
message and acknowledge the fault: See page 42. If
necessary, notify your contractor.
No action required.
After expiry of the screed drying time, the selected op-
erating program is switched on.
Remedy
Check and correct the set DHW temperature if re-
quired: See page 31.
Wait until the hygiene function has been completed.
Have your contractor change the setting.