Hot water from bath mixer tap trickles out, even when fully turned on. Has been like this for months; originally was ok then started to "howl" when water turned on & after some months stopped howling with water just trickling out.
Have 3 times used washing machine cold supply into hot supply until water flowed out of overflow in loft - didn't work. Have drained system and tried to reset all taps starting with downstairs, to find all upstairs hot taps - bathroom, en-suite and shower not working for a while, even when both header tanks in loft full. After 5 minutes started to work. I coaxed the shower hot (water was cold) to flow by sucking on flexible pipe - rather like syphoning petrol from car!
Checked mixer tap. Seems to be ok. Mixer has a shower attachment in middle. I blocked water flow with hand while turning on both hot and cold taps several times. Did not work. I removed shower attachment at tap and fixed a hose into it and connected the other hose end to utility tap whose source is mains direct. Did not work. What else could I try please?
Have 3 times used washing machine cold supply into hot supply until water flowed out of overflow in loft - didn't work. Have drained system and tried to reset all taps starting with downstairs, to find all upstairs hot taps - bathroom, en-suite and shower not working for a while, even when both header tanks in loft full. After 5 minutes started to work. I coaxed the shower hot (water was cold) to flow by sucking on flexible pipe - rather like syphoning petrol from car!
Checked mixer tap. Seems to be ok. Mixer has a shower attachment in middle. I blocked water flow with hand while turning on both hot and cold taps several times. Did not work. I removed shower attachment at tap and fixed a hose into it and connected the other hose end to utility tap whose source is mains direct. Did not work. What else could I try please?