Check to see if the solenoid operates (energises)
If it does not energise water will not flow into the heater tank. Possibly a faulty on/off switch inside
the shower, a loose wire on the solenoid or the solenoid coil itself failed. These can be tested out using a multimeter. Isolate mains power first !
If in any doubt consult an electrician
garryk
December 2009
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