Potterton Suprima 40L - Not igniting

[Seal Pup]

Have just returned from honeymoon to a cold house.

My Potterton Suprima 40L (18 months old) is proudly displaying the infamous flashing 'Red Light'

- I tried to manually reset, by pressing the button.
It then goes though the motions, flashes green/amber, fan switched on but
then does not spark / ignite, then the light starts flashing red again.

- Have tried switching off at fused spur for half an hour, etc
But still the same effect, boiler will reset, fan will come on but will not spark/ignite.

I know everyone suggests a common faulty PCB, but anything else ?

 

[HarrogateGas]

No it definatly sounds like a PCB fault.............Ive got one in the garage if you fancy a drive Northwards!

 

[baxpoti]

95% PCB
1% APS / flue
1% Over heat stat
1% Wiring
1% External fault
1% everthing else

 

[Seal Pup]

Cheers guys, will let you know how we get on.

(i.e. me requesting help from the father-in-law)

p.s. Harrogate would appear to be a bit of a long trip, but thanks all the same.

 

[Baxmax]

Would put a little more than 1% on the gas valve,but in this instance it is the pcb..

 

[ChrisR]

I'll be driving down the A3 this afternoon...........

 

[corgiman]

I'll be driving down the A3 this afternoon...........

have a detour onto the hogs back chris and pop into farnham, I have some mulled wine on the hob

HO HO HO

By the way is it just me or are customers a bit more angry this year ;')

 

[ChrisR]

... and I just turned down a nice job in Millbridge, said I didn't know anyone close ...

Thanks for the offer, but it's one of those "relatively" long journeys.

 

[corgiman]

Aww thats shame

if your stuck for cover in this area matey email me

 

[Seal Pup]

Heating's back on but it seems to be an intermittent fault.

My Father-In Law used the installation guide / fault finder flow chart
and the flashing red light, 3 to 4 times a second seems to suggest a
Flow Switch Fault.

When the controller was flashing Green/Orange there was 240v being
sent to the pump, so we can only deduce that the pump motor is dodgy /
lose connection somewhere ?

p.s. probably should have said that the pump is a fair bit older than the boiler, but no idea how old. For what it's worth, the pump is a Myson Compact (CP53 ?)

Keeping fingers crossed that it keep going tonight, but luckily the temp is not dropping below freezing and I'm off to the folks for christmas.

 

[Agile]

I never even knew it had a flow switch!

 

[Rob]

The newer SE suprimas came with a flow switch to protect the HE which is now replaced with the 'casting thermistor'. Its a simple 2wire switch whiched interupted the APS.