Roy
I am looking for the same part for my fire. Does the control relay cut in and out when you try to turn on the fan? The contol relay on my fire also failed (possibly because of the repeated switching) and I managed to get a direct replacement from RS Components (it's a standard component made by tycho - their T92 series). I was thinking of trying replacing the air pressure switch with the component shown on the following link http://www.heatingsparescentre.co.uk/alpha-c1/alpha-280e-c34/air-pressure-switch-65629560-p2. It's not the same component but I suspect it probably does the same function. If you do find out where to get the actual component I would be interested to know.
Gordon Freeman
March 2011
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