Micron 60FF snag

[wally11]

Hi all.
Micron 60FF playing up. Boiler works fine but ignores the thermostats and runs almost continuously until radiators are red hot. Have to control heat by turning off mains to the programmer / timer. Thought it was the frost stat, but had that checked and replaced by an electrician, along with the room thermostat, but looks like they weren't the issue.
Saw on another forum that someone with the same prob required a "resistor" from Glow Worm which he placed in between the live switch and neutral terminals, which seemed a cure. Spoke to glow Worm who stated that they had no separate part no. for the resistor and so a whole new PCB would be the answer.
Has anyone else had this problem, and do you know of a fix, or if the "resistor" can be purchased without the expensive PCB?
Thanks for any light you can shed on this

 

[spudly1]

i had similar problem where it wouldnt switch off till it overheated changed pcb worked fine yo cant get ressistor on its own though have to replace whole board,

 

[geoff@cetltd]

Its a 470nF / 250Vac capacitor PME 271M

 

[wally11]

Thanks all for replies, but have bitten the bullet and ordered a new pcb. Found one for £130 delivered which seemed the best price I could find on the net. Seems this is a known snag with the Microns, so here's hoping it fixes it. Cheers.[/b]