My Baxi 80 eco combi Boiler - no hot water coming from taps

[sjoseph]

Hi, can someone offer some advice please...

I have the above boiler and recently it's started playing up. The heating works fine but now when I turn the taps on the boiler doesn't immediately fire up. It varies between taps with different pressure too eg the tap downstairs in the kitchen with good pressure fires up the boiler after about 10 sec but the shower upstairs can take forever, if at all! If I turn the kitchen tap on before I go upstairs to the shower, turn the shower on, then turn the kitchen tap off that's usually good enought to keep it going.

A mate has suggested the diverter valve might be faulty? Any ideas??

Cheers for any help

Steve

PS the pressure is 1 bar when cool and I've noticed that the rads get really really hot. cheers

 

[col77]

Not sure if they have a flow sensor?
Sounds like the rubber diaphragm in the diverter valve has perished. Not expensive to replace.
have you had the case off?
Check if the pin moves freely on diverter valve.

 

[sjoseph]

Cheers Col77 - I'll have a look tomorrow - just off out now

 

[sjoseph]

Yep you were spot on col77 - it was indeed a split split diaphragm in the diverter valve - although the split was tiny but apparently enough to destablise the pressures on either side. Total cost £122 (inc parts) - I'll have a go myself next time.