Hi I have an oldish swift rapide with a cascade 2 water heater it works perfectly loads of hot water out the kitchen tap.but the shower you get 30seconds and that’s it I can’t figure it out thank you in advance
No idea, but I doubt this is a Swift problem as the heater was common to most makes at the time. I would move the query to Equipment and Accessories where it might do better if you do not get an answer.