I've been lurking here for a year or so, but now it's time for a question! 
We've been having some difficulties with a Saniflo unit in my parents bathroom. To cut a long and rather messy story short, it's fixed but we had to drill a new hole for the flex through the partition wall to the FCU outside the bathroom as the old route was inaccessible.
The Saniflo is now fine, but the electric shower is completely dead. It'll be a few weeks before I get chance to go home and have a look but I thought I'd try and work out what could be the problem.
There was no power, not even to the power light which is usually always on. My dad checked the DP switch for continuity with a multimeter and it seemed fine, so assumed the shower unit must be shot and put a new one in. Still nothing.
Next thing he's going to do is replace the switch, although it seems unlikely to be the problem given it tested OK with the meter (checked both poles).
The breaker has not tripped and stays up, and the RCD has not tripped either.
It was only installed a few years ago and we know the Saniflo is on a dedicated 16A radial, not taken from the show supply or anything!
I suppose it's possible he damaged the shower cable when drilling, but I'd have though one of the protective devices would have operated?
The CU is a modern 16th Wylex board, installed just before the regs changed, probably 2006/7 same time as the shower. Could the breaker itself has failed?
Sorry for the long post, but I know you like details!
We've been having some difficulties with a Saniflo unit in my parents bathroom. To cut a long and rather messy story short, it's fixed but we had to drill a new hole for the flex through the partition wall to the FCU outside the bathroom as the old route was inaccessible.
The Saniflo is now fine, but the electric shower is completely dead. It'll be a few weeks before I get chance to go home and have a look but I thought I'd try and work out what could be the problem.
There was no power, not even to the power light which is usually always on. My dad checked the DP switch for continuity with a multimeter and it seemed fine, so assumed the shower unit must be shot and put a new one in. Still nothing.
Next thing he's going to do is replace the switch, although it seems unlikely to be the problem given it tested OK with the meter (checked both poles).
The breaker has not tripped and stays up, and the RCD has not tripped either.
It was only installed a few years ago and we know the Saniflo is on a dedicated 16A radial, not taken from the show supply or anything!
I suppose it's possible he damaged the shower cable when drilling, but I'd have though one of the protective devices would have operated?
The CU is a modern 16th Wylex board, installed just before the regs changed, probably 2006/7 same time as the shower. Could the breaker itself has failed?
Sorry for the long post, but I know you like details!
