Hi All,
Hopefully someone can help me with this problem:
I've got a Gainsborough Energy1000x shower that started smoking today with the usual acrid smell of burning plastic. After isolating from the supply (and after getting dried off ;-) , I popped the cover and found that the overheating had actually been taking place at a terminal block, where the mains comes in and branches to the heater and other places. The terminal block is the most common type, like the ones in this image:
Other than the overheating (which re-occurs after 5-10 mins of use), the shower is fine and the water temperature is normal. Is it possible that the only problem here could be the terminal block itself? The wires are fine, albeit a little blackened near the block. They don't feel overly warm while the shower is running, even when the overheating of the block is becoming evident. No other signs of overheating can be seen elsewhere. With the shower in a moist environment, could it be perhaps that the terminal block has corroded and now has enough resistance across it to heat it up beyond what it can handle?
I've got home insurance that'll cover a repair, but they estimate a 3-week turnaround in the claim, meaning I have to go without showers. I'd rather fix this myself quickly than smell bad!! A local repair tradesman suggested that the brand were prone to overheating, but he also wanted to fit a new one, so that has to be taken with the usual pinch of salt.
If it were likely to be the terminal block, would changing the affected wiring also be neccessary? As I said before, they are a little charred, but the insultion seems fine. I don't have crimp tools (for the other end), so making replacement wiring would be difficult.
Thanks in advance for any pointers!
Fraser.