In article ,
raden writes:
In message , Andrew Gabriel
writes
Anyway, to the meat of the question... Have a burned out gas
valve left over. Is it possible to get just the replacement
coils for these? If so, and if they're cheaper than a whole
valve (£56 + VAT), this would seem like a sensible thing to
repair ready for next time it burns out (maybe in another 4
years time?). Not to mention than no one seems to keep stock
of this Baxi part anyway, which would be another reason to
have a refurbished spare ready to go on the shelf.

Sorry, I don't touch them

I do have some gas valves lying about, but without knowing what they're
from, getting the right coil parameters (especially when the solenoid's
gone open circuit) is prolly a going to be an outsider.

I would think that most have died because of o/c solenoids anyway
(although I haven't checked)

Is there a manufacturers part number on it ?

Honeywell VK4105A 1027

I don't have the valve on me, but it's got two coils in series
in the same moulding, and I think it said V1 + V2 240VAC on it,
although I have a feeling it is actually being driven with DC.
The connector has 5 pins, earth in the middle and the two coil
connections either side, but they are also hardwired in series
internally, and the Baxi board only drives the outermost terminals.

The 1027 number on the end seems to specify what sort of gas
connections the valve has. There are models with different
operating voltage too, and I think that's what the 'A' is, but
it might also be covered by the 1027 number.

The Baxi part no (248085) has the pressure reducing part of the
valve swapped for a modulator with a 14V (max) coil controlling
it with separate connections from the main gas valve. The
modulator was made by someone else, not Honeywell but I can't
remember who. That part was still working OK though.

--
Andrew Gabriel