Galaxy Aqua 4000 gone cold

[joffa]

Hi, My shower unit has just gone really cold unless the flow is reduce to almost a trickle, could someone advise as to what part my be faulty?

Thanks

 

[seco services]

Could be the heat can has a failed element. Check the elements for resistance with a multi meter should be about 10 to 18 ohms.
If all ok poss a relay has failed on the pcb. You'd need to check each relay is operating.