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

Rooms are too hot

Cause
Incorrect control unit settings.
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The remote control (if installed) or the room tempera-
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ture controller (if installed) is set incorrectly.
Remote control or room temperature controller
operating instructions
"Fault" 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.
Remote control or room temperature controller
operating instructions
No fuel.
"Fault" 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.
Remedy
Check the settings and correct if required:
Operating program: See page 18.
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Room temperature/flow temperature: See page 27.
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Time: See page 36.
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Time program for central heating: See page 28.
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Only for weather-compensated operation:
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Heating curve: See page 28.
Only for weather-compensated or continuous opera-
■
tion:
The "Holidays at home" function is switched on:
See page 30.
Check what type of fault it is. Make a note of the fault
message and acknowledge the fault: See page 43. 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 46.
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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 18.
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DHW temperature: See page 32.
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Time: See page 36.
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Time program for DHW heating: See page 32.
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Only for weather-compensated or continuous opera-
■
tion:
The holiday program is switched on for all heating cir-
cuits: See page 31.
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 43. 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 32.
Wait until the hygiene function has been completed.
Have your contractor change the setting.
What to do if...
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