problem showers from combi

[ShaunCorbs]

def. plumbed right

Are they bar showers ??

 

[drainrod]

Are they bar showers ??

1-grohe thermostatic concealed 1- crosswater kai 3 thermostatic valve

 

[ShaunCorbs]

Do you know if the filters were cleaned ?

Doesn't sound like a boiler issue as the hot tap is fine

 

[Allgoode]

Sounds like a bit of cross-flow from the cold supply to the hot water from combi.
Do you have any check valves on pipes to shower valves or non return valve on hot water out from combi?
cheers,
Andy

 

[drainrod]

Sounds like a bit of cross-flow from the cold supply to the hot water from combi.
Do you have any check valves on pipes to shower valves or non return valve on hot water out from combi?
cheers,
Andy

no

 

[drainrod]

Do you know if the filters were cleaned ?

Doesn't sound like a boiler issue as the hot tap is fine

filters very clean