Not operating on full heat, only one relay connecting

We have a Mira Sport Max 9.0 J03G s/n 36/12 Its operating, water flow is good, valve regulates the water fine, air boost works, however I see only one element comes on, the relay on the Right of the PCB works, power in & out when you select the bottone, but the left relay is not coming on, so there is not enough heat. Can you advise, the elements seem fine, the TOC is ok. Thanks
Asked 8 years ago by Conor
Yes was thinking that, forgot to mention the Green light's flashes after use & you have to re-boot at mains switch to clear memory before it works again. Does that make it any clearer ? thanks.

Answered 8 years ago by Conor O'Reilly

Going by the description of the fault you have a faulty PCB

www.showerdoc.com/mira-spare-sport-max-pcb-assy-1746-528

Answered 8 years ago by Anonymous

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