Apollo Fanfare boiler wont fire up

[ScottJH]

When I adjust to the timer to continous (or if it is timed to come on) you can hear the fan running but nothing else happens.

No clicks etc as if it is even trying to fire up.

I removed the PCB to check for anything obvious but nothing there.

I also had a new solenoid fitted a few months ago by an engineer but I do not know if it was the pilot light or the boiler one that was changed although I do know the physical location of the one that was changed.

Any ideas ?

Anything I could check or test, bearing in mind I am not a CH engineer, although I do feel comfortable checking wires and voltages with a multimeter as long as I am told where to ckeck.

 

[kevplumb]

check the 3 port valve is working

 

[ScottJH]

check the 3 port valve is working

What and where is this ?

How do I check it ?

 

[kevplumb]

View media item 668 usually near the pump and cylinder

 

[ScottJH]

View media item 668 usually near the pump and cylinder

OK but how do I check it / what am I looking for ?

 

[kevplumb]

look and listen when the stat is demanding heat the valve should motor over

try a screwdriver between the casing and your ear while err indoors turns the stat up

 

[ScottJH]

look and listen when the stat is demanding heat the valve should motor over

try a screwdriver between the casing and your ear while err indoors turns the stat up

Thanks for the help so far KP.

Can you just confirm :

when I look at the valve and move the stat, the motorised lever should move ?

I am not sure what you mean with the screwdriver between the casing.What am I supposed to be doing here/ listening for ?

Sorry for my lack of knowledge.

 

[kevplumb]

the lever wont move

your listening for the motor driving the valve

don't be sorry

if we all knew everything this forum would cease to be

and it gives me something to do while she plays in the front yard

 

[ScottJH]

the lever wont move

your listening for the motor driving the valve

don't be sorry

if we all knew everything this forum would cease to be

and it gives me something to do while she plays in the front yard

There seems to be 2 valves, each with a little silver box (stamped Honeywell 8838 and Honeywell 8837) with a lever.

When the stat is moved, both boxes give a slight click and then run.

One of the levers moves and the other remains still when the stat is turned back down agian.

 

[kevplumb]

ahh we hava an S plan

now we are getting somewhere where is the wiring centre

cream box app 6"" x 3 ""

 

[ScottJH]

ahh we hava an S plan

now we are getting somewhere where is the wiring centre

cream box app 6"" x 3 ""

under the boiler .... i think !!!

 

[kevplumb]

right can you use and have you got a multimeter

 

[ScottJH]

right can you use and have you got a multimeter

yes

 

[gas4you]

When I adjust to the timer to continous (or if it is timed to come on) you can hear the fan running but nothing else happens.

No clicks etc as if it is even trying to fire up.

First thing i would be looking at to test is the air pressure switch, aps.

As the fan is running a call for heat is being received at the boiler, but the fan has not been reconised as spinning (proved), so the pcb will not allow the ignition cycle to progess further.

 

[kevplumb]

ok chech the orange wire for live when the stat is calling for heat


err ive been in strattons with the bikers all afternoon

so dont ask