Is there a high and low fire adjustment to set up on the gas valve to get the correct combustion readings . i no there is one but cant find adjustment for other. 
viessmann vitodens 200
- Thread starter Steve46
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A
ALEC1
yes, its in the book!!!!
Viessmann give a range between x and y for co2.. never had to adjust one at all...
Viessmann give a range between x and y for co2.. never had to adjust one at all...
co2 is out on full load bet there is only one adjustment on gv goes all over when i go back to part load , instructions in germany no help at all
co2 is out on full load bet there is only one adjustment on gv goes all over when i go back to part load , instructions in germany no help at all
hot water not getting as hot as it should be any surgestions
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If this is the newer 200w the lamda gas sensing can give up the ghost and the readings will go bonkers. If so its a cap off job and some new expensive parts......although 200w is not 5yrs old yet so may be in warranty.
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