intermittent power low flow light on
However from your description it still sounds like a faulty solenoid, the thing is you need to measure it almost immediately it fails because they can recover quickly.
My thought would be to fit a universal solenoid coil to the shower at 9 quid it is relatively cheap before getting involved with relay boards etc.
www.showerdoc.com/hydra-universal-electric-shower-solenoid-coil-no-valve-included-27600
Answered 3 years ago by George Thomson
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