No water pressure at boiler (Fault F22 Vailant EcoTec 618)

No water pressure at boiler (Fault F22 Vailant EcoTec 618)

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g3org3y

Original Poster:

20,606 posts

190 months

Friday 24th February 2017
quotequote all
Hi chaps,

Issue at work with no hot water. This is since the storm of last night. Apparently the staff who arrived this morning stated that the computers showed evidence of a power cut).

The boiler (Vailant Ecotec plus 618) is registering no pressure with the associated fault code F22.

Done a bit of googling where it suggests turning on the water pressure to refill. Unfortunately the boiler does not have the grey levers as per this video: https://www.youtube.com/watch?v=6ZwPQFF6Nvk

It does seem to have a filling loop (?) (mentioned in other links I've found).

The set up is as below:



Turning the blue level makes no difference (no rush of water) and neither does the 'hex' bolt on the opposing side.

The 'valves' under the boiler are both in the 'on' position (and always have been).



Any ideas? TIA


essayer

9,008 posts

193 months

Friday 24th February 2017
quotequote all
I would pop the front off and check the pressure valve on the inside, just to check it's not a fault with the actual sensor and the pressure is actually correct.


caveat: I would do this on my home boiler and accept the risks but strictly it's part of the internal workings of the boiler and should only be done by someone Gas Safe, may be of concern in a commercial environment.

Murph7355

37,648 posts

255 months

Friday 24th February 2017
quotequote all
The fill valves shouldn't always be "open".

Have you tried turning them? Turn one 90deg. Then turn the other slowly and you should hear the boiler fill. There'll be a gauge under the flip down front cover...watch this and don't overfill it. Once done, turn the taps off again.

If you don't hear any water flow I guess there could be a problem with your supply. Are you getting cold water?

V8RX7

26,762 posts

262 months

Friday 24th February 2017
quotequote all
IANAP but you have to open both valves.

In the pic the blue one is open but the iso valve is closed - you open it by turning a screwdriver so the slot is lengthways to the pipe (ie a 1/4 turn)

g3org3y

Original Poster:

20,606 posts

190 months

Sunday 26th February 2017
quotequote all
Thanks to those who replied. smile

Murph7355 said:
The fill valves shouldn't always be "open".

Have you tried turning them? Turn one 90deg. Then turn the other slowly and you should hear the boiler fill. There'll be a gauge under the flip down front cover...watch this and don't overfill it. Once done, turn the taps off again.

If you don't hear any water flow I guess there could be a problem with your supply. Are you getting cold water?
Yes I tried turning them with no improvement in matters. I found them in this 'open' setting so I can only assume they've always been like this.

We are getting cold water.

V8RX7 said:
IANAP but you have to open both valves.

In the pic the blue one is open but the iso valve is closed - you open it by turning a screwdriver so the slot is lengthways to the pipe (ie a 1/4 turn)
Tried that also. Again, didn't seem to do anything.

It's certainly an unusual situation and wonder if the storm has tripped something we're missing.

Regardless, plumber is coming on Monday so I'll try and observe what the solution is.

Thanks again chaps.

S1_RS

782 posts

198 months

Sunday 26th February 2017
quotequote all
Is there a mechanical pressure gauge?

essayer

9,008 posts

193 months

Sunday 26th February 2017
quotequote all
If it's a 618 plus it will be inside the front case.
Both filling valves shouldn't be left on, it'll be over pressure if it is and dripping out the overflow

g3org3y

Original Poster:

20,606 posts

190 months

Sunday 26th February 2017
quotequote all
S1_RS said:
Is there a mechanical pressure gauge?
Yes at the front. Was reading zero.

essayer said:
If it's a 618 plus it will be inside the front case.
Both filling valves shouldn't be left on, it'll be over pressure if it is and dripping out the overflow
Interesting, that's how I found it so I have to assume it has been like that since the last time it was attended to (unless someone was fiddling it before I had a look at it).

DrDeAtH

3,586 posts

231 months

Sunday 26th February 2017
quotequote all
The 'valve' with a hex head on the filling loop is a double check valve. Do not turn it!

kurt535

3,559 posts

116 months

Sunday 26th February 2017
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I have this problem as well due to new system with air in it.

I bled the rads and discovered f22 code on boiler.

So I turned both valves on system as described higher up, closing them after gurgling stopped

Then I put a pointy screwdriver into boiler to reset code.


g3org3y

Original Poster:

20,606 posts

190 months

Saturday 4th March 2017
quotequote all
To update the thread, the plumber came out on Monday.

Stated that the blue 'valve cover' was broken and fitted a new one. I could tell it was broken and opened the valve 'manually' with a screw driver (though that didn't seem to fix things). I suppose he has the magic touch (or actually knows what he's doing!).

Seems to work fine now. The inlet/outlet valves under the boiler are still in the on position.