Valliant Combi Boiler

[kevman]

I have a Valliant combi bolier. Yesterday I fitted new taps in the bathroom (After turning the mains off). Once fitted and the water turned back on I am now not getting any hot water (The heating system is fine). The pressure on the boiler is 1.5 bar.

Any ideas?

Thanks

Kev

 

[gas4you]

Which vaillant is it?

 

[kevman]

The only model that I can find is on the pump VP5ZE

 

[kevman]

I cannot find a model number on the boiler itself. The only number visible is on the Danfoss pump VP5ZE. The boiler itself is about 15 years old.

 

[gas4you]

This one is before I knew Vaillants. Someone else will probably answer you soon.

 

[Gasguru]

The boiler probably has 2 square gauges bottom right (VCW).

Do you get hot water at the other taps?

When you turned the water back on did you leave the hot taps open to clear the air and turn it on slowly? Sometimes the sudden surge in water can finish off a worn diaphragm. You could remove the lower front fascia panel and check the pin moves on the water section as the hot tap is opened.

 

[kevman]

The boiler probably has 2 square gauges bottom right (VCW).

Do you get hot water at the other taps?

When you turned the water back on did you leave the hot taps open to clear the air and turn it on slowly? Sometimes the sudden surge in water can finish off a worn diaphragm. You could remove the lower front fascia panel and check the pin moves on the water section as the hot tap is opened.

Gasguru Thanks for your help. You were right the diaphragm has gone. Replaced this morning evrything now ok.