Vented water cylinder query?

[macka09]

hi guys.

On a vented cylinder if the hot water is scorching hot and it's pumping over, does it point to the cylinder stat?

 

[Harvest Fields]

hi guys.

On a vented cylinder if the hot water is scorching hot and it's pumping over, does it point to the cylinder stat?

When the immersion is on or hot water through the boiler?

 

[ShaunCorbs]

or port valve stuck open etc

 

[macka09]

When the immersion is on or hot water through the boiler?

I'm unsure at the moment mate, could be either?

 

[macka09]

or port valve stuck open etc

If the valve was stuck open; other than checking the arm isn't locked open and checking the tension of it; is there any other checks I should carry out?

 

[ShaunCorbs]

providing power to the boiler sl?

 

[Best]

Check if actuator moves when heat.
Check if heat is still passing through the body of the motorised valve when actuator is removed and valve spindle is turned to off position.
Check if immersion heater switch actually isolates power, plus test immersion stat

 

[macka09]

Check if actuator moves when heat.
Check if heat is still passing through the body of the motorised valve when actuator is removed and valve spindle is turned to off position.
Check if immersion heater switch actually isolates power, plus test immersion stat

I'm not clued up with checking electrics tbf. I don't own a multimeter it's that bad.

 

[Harvest Fields]

I'm not clued up with checking electrics tbf. I don't own a multimeter it's that bad.

You should buy one mate. Its a must have item really.

 

[Best]

I'm not clued up with checking electrics tbf. I don't own a multimeter it's that bad.

I was same as you, but now use one.
The basics are easy and even solely as a safety check to confirm no power leakage, it is essential.
Get a spark to tell you how to do the basic checks, - power, continuity, etc.

 

[macka09]

I was same as you, but now use one.
The basics are easy and even solely as a safety check to confirm no power leakage, it is essential.
Get a spark to tell you how to do the basic checks, - power, continuity, etc.

I have been trying to get on the Baxi course but there's such a long wait all the time.

 

[macka09]

If the zone valve was stuck open does the cylinder stat just send a signal back to the valve? If so can they be freed up or is it best to change the whole thing? Thanks again.

 

[Best]

If the brass valve body is easy to turn by hand, plus shutting tight off and valve only 3 or 4 years old max, then just the actuator head replaced would be okay.
But otherwise replace entire valve, which usually are little, if any extra cost anyhow, compared to just the actuator.

 

[Vee]

Can also be other type of blockage, valve letting by or stuck (brass body needing changing - not just actuator)