Grasslin digital timer to Baxi boiler

19 Jan 2009
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Tyne and Wear
United Kingdom
Good afternoon,

I recently had a new boiler fitted Baxi 105HE yet I do not believe the plumber & electrician fitted the electronic timer control correctly as it doesn't seem to function- the boiler only works when manually switched.

The timer model is the digital fmd/120, but they have left me no instructions. I really need a diagram as to how the terminals on the back of the timer terminal connections (1,2,3,4 & 5) relate to the boiler PCB plug. Is it simply like for like.

Any assistance would be appreciated as the plumber & electrician now seem to have disappeared.

Best regards,

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Hi jonjb,

Worked it out now.

All functioning correctly, wires were not connected in the right order which is a bit of a worry.

Anyway, thanks for your help.



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