Baxi NetaTec Boiler - High Pressure

[PatrickJD]

Hi all, I've had low pressure on my boiler a few times and just used the filling loop to sort it. However, now I seem to have a high pressure isssue. I've managed to get it out of the red by bleeding from a radiator, but as part of the checking the issue I've looked at the filling loop and I'm not sure if it's fully open or fully closed. Can anyone tell from these pictures if it's open or closed?

Thanks

 

[CBW]

The loop is open, but you’ve closed the return valve off and the cold inlet.

 

[PatrickJD]

So the 2 back ones (bottom of picture) are closed and should be open, and the 2 front ones (top of picture) are open and should be closed. However, with the current settings, this closes the loop anyway so isn't the cause of the high pressure, is that correct?

Thanks

 

[CBW]

Yes correct, I can only see one picture though. Current settings though, you won’t have hot water and when you use the heating will go to lockout as it can’t return. No it won’t be the cause unless all valves are passing (unlikely). Did you over-pressurise? If so, then taking a dribble out isn’t much. If it’s high pressure when heating is in use, likely an expansion issue.

 

[PatrickJD]

Thanks for replying. I don't have any issues with Hot water. When the heating comes on, it comes on for about 10 seconds, then goes off flashing E117, then goes off and comes back on 3 seconds later. (I've turned off heating for now).

In terms of over-pressurise, I've not done any pressure adjustments in at least a year, and the boiler was serviced about 2 months ago, and I've only just turned on the heating recently so not sure why it would be over.

I'll re-do the taps as you suggested, bleed some more water from the heating and see what happens. If it goes back up I'll give Baxi a call.

Thanks

 

[Anon_E_Mouse]

E117 is system pressure to high.