Intermittent central heating fault.. Discussion ThreadIntermittent central heating fault.. Electrical Advice
Hi,
I've recently looked at a fault with an intermittently tripping RCD at a property for a landlord I do the odd job for.
Got there and did the basics, IR'd the cables, looked at resistances across the pump, got acceptable results everywhere I looked. Played with the heating, demanded hot water and central heating to try and recreate the fault. Absolutely nothing. Apparently it is very sporadic and can be days apart, which given the time of year means the heating does not trigger it every time..
The CU wasn't split sensibly to my mind with up and downstairs lighting and smokes on one RCD and heating, ring and oven on the other, I swapped the heating with one of the lighting circuits, to see if the fault moved, to give a slightly better split, and to be sure it wasn't due to some sort of cumulative high leakage from things plugged into the ring.
The fault has indeed followed the heating across to the other side of the CU. I am happy to admit I'm competent with domestic heating, but it's not my bread and butter, and am now scratching my head, mostly due to acceptable test results and the lack of repeatability.
It's a small 2 bed property with a Y plan set up.
Any thoughts would be much appreciated.
Thanks.
Intermittent central heating fault.. for the original thread on Electricians Forums
Hi,
I've recently looked at a fault with an intermittently tripping RCD at a property for a landlord I do the odd job for.
Got there and did the basics, IR'd the cables, looked at resistances across the pump, got acceptable results everywhere I looked. Played with the heating, demanded hot water and central heating to try and recreate the fault. Absolutely nothing. Apparently it is very sporadic and can be days apart, which given the time of year means the heating does not trigger it every time..
The CU wasn't split sensibly to my mind with up and downstairs lighting and smokes on one RCD and heating, ring and oven on the other, I swapped the heating with one of the lighting circuits, to see if the fault moved, to give a slightly better split, and to be sure it wasn't due to some sort of cumulative high leakage from things plugged into the ring.
The fault has indeed followed the heating across to the other side of the CU. I am happy to admit I'm competent with domestic heating, but it's not my bread and butter, and am now scratching my head, mostly due to acceptable test results and the lack of repeatability.
It's a small 2 bed property with a Y plan set up.
Any thoughts would be much appreciated.
Thanks.
Intermittent central heating fault.. for the original thread on Electricians Forums
