Power tripping when dhw/ch demand.

[finchy01]

Evening all,

I had a call back today from a month ago or so. The power trips when a) immediate demand for dhw and b) a few seconds after demand for ch. We replaced the programmer, cylinder stat and 3 port before (a different reason). This has only started a couple of days ago so I know it's not what we did.

Standard ov system with honeywell programmer, cylinder status and valve. Sunvic room stat.

My thoughts are 3 port (honeywell) as it's instant on dhw but I think the delay before tripping with ch is that it takes a few seconds for the valve to move across.

Would people agree or have other thoughts?

1 last thing, who do I message with my gsr details to get access to the inner workings!

 

[jtsplumbing]

Could be the pump, you need to start isolating components to find what is causing fault

 

[PlumbBobBob]

send your gsr details to gas man

 

[buckley plumb]

Pump. On hw it would get instant supply from cylinder Stat on Heating the zone valve would open then bring on pump. Check resistance of pump and for short to earth.

 

[Best]

I don't do gas, but I find anything that contains a motor is likely culprit when fuses or trips go suddenly. So usually circulating pump (or with oil its burner motors). Windings in motors break down or damp gets through