baxi 105e no hot water no heating

[techbabez]

hi had a new pcb installed and was working fine now not working at all no heating and no hot water (thank heavens for electric showers, ) the diaphragm was also changed but may not have been new any ideas or any boiler guys in the durham area willing to have a look. cheers

[techbabez]

boiler isn't firing up and a flashing light is showing top row fourth one along next to the fan light

[short360uk]

Sounds like a pump problem. Did u get this sorted

[blueflash234]

i think the light next to the fan light is for the air pressure switch take the front of and turn on the hot water tap does the fan run if not check the air pressure switch is making if its making the pcb is faulty

[short360uk]

Air pressure fault would bring the fan fault light on. If the fans not running the air pressure switch will not let the boiler fire so if the air pressure switch is faulty the boiler will think the fan is not running and bring the fan fault light on

[lagerland]

Had a problem the other day with mine,kept going into anti cycle mode whatever that is.Anyway had hot water but no heating,first diagnosis he says its the free port head again whatever that is.Anyway turned out to be the control timer..............