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Sep 4, 2021
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Londob
Member Type
DIY or Homeowner
Hi,

We have a potterton apollo boiler and it's showing a E1 fault due to a drop in pressure.

Normally I just pull down the green lever inside to increase the pressure but zilch is happening when I do this.

Any suggestions?

Thanks
 

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That green lever isn’t something I’m familiar wit, it looks a little like a pressure relief valve. It also looks like you may have an external filling loop connection setup as well?
 
Hi,

We have a potterton apollo boiler and it's showing a E1 fault due to a drop in pressure.

Normally I just pull down the green lever inside to increase the pressure but zilch is happening when I do this.

Any suggestions?

Thanks

That green lever isn’t something I’m familiar wit, it looks a little like a pressure relief valve. It also looks like you may have an external filling loop connection setup as well?

The Baxi guy told me this replaced the filling loop, so I'm not sure. They changed it about 2 years ago.
 
Is there an analogue (non digital) pressure gauge anywhere on the boiler?
 
There are two valves with caps on them, they appear to be the old loop? Are you able to take a side photo?
 
View attachment 63392

Here is a pic. Is it the two with caps on ?

Do these help?

Thanks
Yes they do. Looks like they’re usable, precursor though- they may leak. Remove the caps, Attach the filling loop to both valves, and using a flat bladed screwdriver or a kitchen knife turn both valves and you shouldn’t be able to get boiler back up and running.
 
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Yes they do. Looks like they’re usable, precursor though- they may leak. Remove the caps, Attach the filling loop to both valves, and using a flat bladed screwdriver or a kitchen knife turn both valves and you shouldn’t be able to get boiler back up and running.


Yes they do. Looks like they’re usable, precursor though- they may leak. Remove the caps, Attach the filling loop to both valves, and using a flat bladed screwdriver or a kitchen knife turn both valves and you shouldn’t be able to get boiler back up and running.

Thanks. We managed to get the left one off and it did leak but the right one just wouldn't budge with tools. Even my neighbour tried.

I wish I had known how feeble those green levers are as I would have told them not to change it. Its frustrating having to pay someone to come and fix it.
 
The cap won’t budge? Try holding the valve with an adjustable spanner whilst trying to remove the cap.
 
Have you tried 'water pump' or 'groove joint' pliers on the cap, with spanner on the valve body?
 

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