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- 17 Dec 2020
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We have a vaillant 831 and the thermostat is broken so that the heat-call isn't received by the boiler. Nothing happens. I think it probably happened when our 5 year old dropped it a week ago. The thing is we are supposed to go away tomorrow for 10d (for super safe low key Christmas with my parents - we've isolated for 10d to be able to go without taking the virus.) I'm worried about leaving the house without heat but I THINK from the manual that the Vailllant 831 will override the thermostat if temperature drops too low in the water in the system and will heat them up to avoid freezing? Have I got this right?
Read more: https://www.diynot.com/diy/threads/vaillant-831-not-working.559457/page-2#ixzz6gufDJHur
Read more: https://www.diynot.com/diy/threads/vaillant-831-not-working.559457/page-2#ixzz6gufDJHur