vokera excel 96e

[johnp85]

Hi, I got up this morning and my boiler wouldnt work .
Red led lit saying low pressure so I let in more water to get the pressure up, bled radiators(no air came out) and then let a little more water in. The pressure gauge now reads 1.5 bar but the led is still lit and boiler still not working.
Any one any ideas?

 

[kirkgas]

is the red light a reset button, or is there another reset button

 

[nickso]

flow switch is blocked or the diaphragm is burst.

 

[johnp85]

no obvious reset button , tried turning mains power off and back on but still the same .

How do I check these other things?

 

[nickso]

below and slightly to the right of the pump there is a microwitch attached to the brass section. there is a pin coming out of that brass valve, when the pump is running the pin goes in and the microswitch makes.

if it doesnt go in try to push it manually and see if the boiler fires, be careful as there are a few exposed terminals in there.