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Valiant boiler- in summer mode but radiators heat up
Anonymous user 16/03/2024 - 2.43 PM
Hi, I have set the boiler control to Summer Mode, but sometimes the radiators are heating up. Also set the temperature to zero on the boiler. Does anyone have any advice please?
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2 Answers
STEADY HEAT LTD
Rating: 5 out of 5
Common problem in Vaillants. Internal diverter valve not closing properly, especially when hot water plate heat exchanger is partially clogged up. In worst case need both replaced. Around £200 in parts.
Answered3 August 2021
12
Boss Gas Installations Ltd
Rating: 4.9 out of 5
Sounds like your diverter valve is stuck and allowing hot water to seep into the ch circuit...
Answered13 August 2021
0