Mira Shower Problems

Thought I'd try for here before calling the electrician, any advice appreciated.
We had a new bathroom installed just over 2 years ago & with it a new Mira Sport 10.8kW shower.
As of two days ago the shower has stopped working. This didn't happen while someone was using the shower - just didn't work one morning. When switched on at the the fascia lights don't light at all & so the shower doesn't function at all.
I've checked the obvious (to me). The fuse in the CU is fine. When the pull-cord switch is in the on position there's continuity through it. I've checked the cable from the CU to switch & switch to shower and both seem fine. The light on the pull-cord switch comes on when the switch is on, so I'm assuming everything's fine that far. I've also taken the front off the shower & there's nothing obvious wrong inside (no wires disconnected or foul smell from the PCB).
Any suggestions as to what further testing can be done before I pay a call out charge on a 2 year shower?
--
Dave Cunningham dave at upsilon org uk
PGP KEY ID: 0xA78636DC
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Hi Dave,
Have you checked with a meter for 240v present at the shower when the isolation switch is on?
If you are certain that there is no external fault it might be worth giving Mira a ring first. Describe the symptoms.
I know of a Mira sport 10.8kw that packed up about three months ago and the guarantee had expired. No lights as you describe!!! I made sure that there was no external fault and told the customer to call Mira. They sent an engineer out who changed the pcb. He said there was a know problem with the pcb's that were fitted around that time, and he changed it FOC.
Can't guarantee you'd get the same response of course.
Billp
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wrote

Thanks Bill, phoned them today & they've said they'll repair it for the price of a call out. Certainly better than buying a new shower!
--
Dave Cunningham dave at upsilon org uk
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