Vaillant turbomax combi boiler. Why does it only fire up when the hot water tap is partially open? Why does the 22mm central heating pipe get hot then, even when central heating is switched off and cold? Is there something wrong? Could this be linked to mixer shower controls not getting...
Thanks for this! I am seeing my plumber tomorrow to discuss, but he did say there isn't a pump for combi boilers and I fear I am going to have a job convincing him about a new product that nobody seems to have heard of! Any testimonials from other clients or plumbers who have fitted these would...
Vaillant combi boiler. Low pressure in house, bath takes 30 mins to fill! But once it's hot it stays hot, yet the shower goes cold after 5 mins. I have a feeling the thermostatic valve can't cope with the pressure differential. (something about cold = high pressure from mains, hot is low...
New shower, but concealed therm valve not working. Water turns cold. I've heard about boosting it with a venturi shower valve, should I have installed this instead? Should I do it now? Expensive shower now shunned by whole family because it's cold.
New shower installed, simple round ceiling head, with thermostatic mixer valve. Shower is on top floor of a 3-floor terraced house, where the water pressure has always been low. Combi boiler is being repaired (it's insured - a 15 year old Vaillant Turbomax) - fitter is coming soon for third time...