Active 350 Redring shower tripping RCD

15 Apr 2010
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United Kingdom
I have a Redring Electric Shower which keeps tripping the RCD if it on a HIGH setting. On MEDIUM or COLD it is working find. But the pump is noisy. A bit like a train chugging.

My old Redring shower was about 20 years old when it had to be replaced. But this Active 350 Shower is about 4 years old (?).

Is there anything worth checking? Or should I assume that is more economic to buy a brand new one?

They don't seem to be selling the Active 350, but they have a 350S. How do I find out if the foot print is exactly the same , to avoid installation issues etc....
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