No water flow
The first part of your question points fairly clearly to the flow valve, when you say "Usually the light does not appear until the on/off switch is pushed, but it now lights as soon as the unit becomes live" you are correct this is unusual, however I think you have to replace the flow valve first, then see if there is a continuing problem with the lights.
I suspect everything will be OK after the flow valve is replaced.
Answered 7 years ago by George Thomson
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