Potterton Promax Combi HE Plus

[martik]

No previous problems with this boiler - Central heating working fine, but there is no hot water flow to any of the taps in the house. When any of the hot taps are opened, nothing happens, not even cold water coming out of them.
All was fine yesterday evening. No error codes showing on boiler, but hot water light is not illuminated. Pressure OK at about 2.5 bar.
Just from reading similar posts, could this be the diverter valve? Any ideas would be much appreciated.
Cheers.

 

[clf-gas]

If the pressure of 2.5 is whilst the heating is on then thats fine, if thats whilst cold its a little high.

Look under the boiler, from the right you will see a 15mm pipe (seond pipe in), is the issolation tap closed. (At 90' to the pipe).

 

[namsag]

If no isolating valve has been turned off under the boiler ,you very well may have a frozen pipe either in cold supply to boiler or hot out of it

 

[clf-gas]

If no isolating valve has been turned off under the boiler ,you very well may have a frozen pipe either in cold supply to boiler or hot out of it

, Good thinking Batman

 

[gas4you]

If isolating valves are all ok and no frozen pipes, check for a blockage on the cold water inlet filter.

Edit; You haven't got a Sentinel Combiguard fitted by any chance have you?

 

[martik]

Many thanks for the replies guys. I took the advice of clf-gas and checked the isolation valve. Turned it the other way, then reset the boiler and hey presto - hot water at full pressure! Still seems OK hours later, so hopefully that's been the problem.
Cheers.