Redring Expressions 500 electric shower for parts. (Addiscombe CR0)

For parts, a recently removed Redring Expressions 500 shower. It was working fine then decided to only give me cold showers with the 'overheat' stuck on. New shower is working so water pressure is fine, probably a board problem. Going to the tip otherwise, spares anyone? Pickup available today onwards, earlier the better. Addiscombe tram stop area.