Hello,
I have a dual RCD CU, one side of which tripped and wouldn't reset. I tracked the problem to the circuit which does the central heating pump etc and an immersion heater which is not normally used (fused switch is left off and gas central heating used instead) by disconnecting the neutrals in the CU with the MCBs off, then reconnecting one at a time to see which caused the RCD trip. However, the problem then disappeared before I could isolate the bits on the problem circuit. The RCD still operates with the test button, but whatever caused the trip is no longer doing so.
So, two questions -
1) suggestions as to cause and likelihood of recurrence
2) if it recurs and I can't solve it, is this a problem for an electrician, or a plumber?
Thanks
I have a dual RCD CU, one side of which tripped and wouldn't reset. I tracked the problem to the circuit which does the central heating pump etc and an immersion heater which is not normally used (fused switch is left off and gas central heating used instead) by disconnecting the neutrals in the CU with the MCBs off, then reconnecting one at a time to see which caused the RCD trip. However, the problem then disappeared before I could isolate the bits on the problem circuit. The RCD still operates with the test button, but whatever caused the trip is no longer doing so.
So, two questions -
1) suggestions as to cause and likelihood of recurrence
2) if it recurs and I can't solve it, is this a problem for an electrician, or a plumber?
Thanks