Halstead Finest Boiler - safty lockout light coming

[mrM]

Good Morning Chaps,

I have Halstead Finest boiler and the safty lockout light has started to come on, disconnecting the power supply appear to get rid of the problem.

However when I put the hot water on, the radiator also start to heat up also, on checking the micro-switch for Primary Flow switch (2 violet wires) , this always appear to be closed, when by default if the Central Heating is off should be in the open position, according to the manual.

The question is what is likely to cause the switch to stay permanently closed and how do I fix it?

Advice and guidance would be appreciated.

 

[picasso]

I think you have a couple of unrelated faults, your diverter valve is sticking causing the rads to heat up when the hot water is run, the lockout could be just about anything , you probably need to get someone in to look at it and finally the micro switch (violet wires) is normally open circuit until the pump starts and then it should close for both hot water and heating.


ps meant to ask is the red led flashing or permanently on ?

 

[mrM]

Thanks for the feed back Picasso - Is it safe to use the boiler in the short term while the "diverter value is sticking".

Is there anything I can do to pin point exactly where the issue is and if diverter value is sticking - what is the best way to un-stick it?

red is permanently on until power recycle.

 

[picasso]

I cant say if your boiler is safe or not without being in front of it, your boiler may be over heating have you checked the pressure or can you hear air in the boiler ? my first thought would be to check the pump.

 

[mrM]

Picasso - Your disclaimer is clearly understood, sorry to put you on the spot there.

The Pressure is 1.5 bars and appears to be constant, with regards to air in the boiler, yes there could possibly be, it did once make a lot of noise similar to having air present.

If Automatic Air Value is not working correctly can this cause similar problems?

Next question - how do you check the pump?

 

[picasso]

I would sort the AAV before doing any thing else.