Hot water taking minutes (from combi)

[speni]

I have a Heatline boiler, the central heating is working fine, but hot water takes forever. Runs lukewarm after about 20 seconds, then minutes to become hot. It happens on all taps/bath, the tap closest to the boiler being the same.

The boiler fires up immediately the tap's turned on.

Please look at the picture of the front panel of the boiler, according to the last guy out to do a boiler landlord's check, this is how it should be set up.

Any help appreciated.

Untitled

• speni
• 27 Sep 2010
• 1

 

[cross thread]

check the flow rate ,should fill a pint in about 6 seconds ,any faster and will take ages

 

[speni]

flow rate is 8 seconds a pint, does this seem about right?

 

[ajrobb]

Do you have a thermostatic shower mixer?

If you have, I'm wondering about dodgy non-return valves. Maybe try turning cold water feed off to boiler and see if you still get any water out of the hot taps; I don't think there should be any.

 

[speni]

no shower in the house, only a bath.

 

[fazedup71]

tell us more about your boiler! do you have a 24kw or 30 kw? run the tap slowly, does it get hot? also put your hand on the left hand pipe at the bottom of the boiler, is it getting hot while the hot water is on? it could be your divertor valve playing up, plastic inside and they break easily

 

[ChrisR]

Diverters "let by" for a pastime on these.
Any mixer can be faulty and produce similar results, it doesn't have to be a shower.