Boiler hot water issue & water pressure issue upstairs. please help!

[Riddy95]

Hi everyone,

New here & my first post!

I have a Worcester greenstar 24i, it is a conventional boiler, it has a water tank upstairs.

For the past year the hot water when turned on was intermittent. I repressurised the expansion vessel to 1 bar and the hot water switch when turned on worked as it should, however the pressure upstairs was lower than usual, and not hot upstairs, rather it was warm (downstairs pressure and heat fine).

Upstairs, the showers also are not heating correctly and always cuts off. Unable to have baths as water is only luke warm.

Now the hot water switch is playing up again. The hot water only turns on when I wiggle this switch located near the water tank (see attached).

To summarise, 2 problems:

1: reduced pressure and hot water upstairs, showers not working as they should

2: hot water only turns on when I wiggle this switch (attached)

Please help, can't afford to repair or replace, but at least if I know the problem can try myself.

Many thanks

 

[Deleted member 120897]

It might be the motor inside that valve actuator or the microswitch. As for reduced pressure upstairs, has this always been an issue or a more recent thing? Check the cold water storage cistern is filling back up.

 

[Riddy95]

Hi many thanks for your response.

Are they easy to repair the valve or microswitch? How do I know which one it is?

As for the pressure and hot water, it seems to have started at the same time the switched started playing up!

 

[Deleted member 120897]

The cover would need to be removed warning - doing so exposes live conductors, proceed with caution.

Then check if the motor or switch, plenty of YouTube videos for a better understanding. The motor needs to motor all the way across to make the microswitch. As a newbie, you goth be best replacing the head without draining down if possible

 

[Riddy95]

Sorry what do you mean by draining down? Also any idea what water pressure issue could be?

 

[Deleted member 120897]

I’ve already said what water pressure issue could be, doubt it’s related to failure of the valve. A drain down means draining the water from the system.

 

[Riddy95]

Thanks will let you know how I get on

 

[Riddy95]

Hi so quick update. There's no way to check the cistern on our water tank as it is sealed. I did purge the tank by emptying it completely, this has improved pressure slightly but not fixed the hot water issues upstairs. As for the valve, it looks like it needs replacing. Any other suggestions please on hot water upstairs?

 

[Deleted member 120897]

I don’t know why your cistern is sealed, it needs to be accessible for instances such as this. Could be limescale in hot water cylinder.

 

[Riddy95]

Update, replaced the motor of the valve think it was called a synchronous, that's fixed the hot water not turning on, thanks for that! I haven't been able to fix the poor pressure, both my showers are cold unless I turn to max heat, bath is never warm enough. Attached is a photo of my cistern. Thanks