Neataheat not firing up

[jimH240]

Got a Neataheat Mk2F which suddenly went dead. The 1 amp fuse on control panel had blown. Changed that and switched mains power back on. No sign of any life and after 5-10 secs 1 amp fuse flashed and blew.

Changed the boiler thermostat for a new one thinking (for this and another reason) that it was faulty item. Put new 1 amp fuse in and same thing. After 5-10 sec blew again.

My thiinking now is that it may be the relay. Should this be my next step??

If so do i need to get the potterton 640797 relay at about £30 as reading some earlier posts Maplin used to do a similar generic one for 1/4 price. However they don't seem to stock them anymore. Any other relays recommended?

jim

 

[UF6]

I can't imagine it would be the relay. Relay coils seldom go s/c.
Is this the one with the plug-in octal relay? If the relay is u/s a standard jobby from RS would do.

You should hear the relay energise when the boiler live feed hits.

More likely the flue fan. I would suggest you check this first.

 

[Gasguru]

Probably fan, easy to check.

However I would advise you get someone in for this model...the case requires smoke testing on replacement.

 

[gas4you]

If yours is one of the few that has the ch pump connected it, it could be this.