When running the bath tap the dhw heat fluctuates from warmish to cold, the demand light remains lit and the boiler is firing ok. But when using any other tap in the house the water temperature is correct.Any ideas please?
I have the exact same problem with a Modena 80. Downstairs hot tap OK, upstairs bath tap cycles hot and cold. CH is OK. Did you find the problem? Thanks in advance.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.