no hot water

[desrob]

i have a baxi105he the hot water only works when c h is on, and a alpha cb 33 according to punter they only get hot water when th ch is on and turned up on stat to 21 degrees ? any ideas

 

[Billy Bob Bob]

in regards to the 105 diaphragms probably shot easy to test in regards to the alpha sounds like wiring or pcb fault

 

[desrob]

in regards to the 105 diaphragms probably shot easy to test in regards to the alpha sounds like wiring or pcb fault

agree regarding baxi,the alpha i can't understand the room temp having a bearing on getting hot water or not

 

[neily01]

Bypassing on diverter valve, glands get sticky. if the hot water demand light comes on diaphram should be ok if maybe a bit worn. See if the heating flow pipe gets warm with hw demand if so turn off the valve on flow see if hot water improves. Usually just a clean out will do. Becareful with valve as they can leak or break off in the off.