Hugo Nebula wrote:

My Potterton Suprima 30 was refusing to fire up for more than a few
seconds yesterday, so I followed Potterton's Fault Finding flow chart.
This got me as far as "are the two yellow wires to the thermister
(sic) shorted?", which was a no. The next but one step was "are the
two white wires to the temp control shorted?", which was a yes and
therefore "replace Electronic Control", by which I assume they mean
the PCB.

However, as part of checking, I inspected the wiring to the thermistor
and carefully pulled it in and out. On reassembling everything, it
now seems to be working as normal. Is it possible that it is the
thermistor not conducting heat properly rather than the PCB?



When my P S 80 adopteded the 'fire, fail to fault' mode of operating
this time last year I remade all the solder joints on the PCB and it has
worked fine ever since. Correction; it has worked as well as one can
expect from that model ;-)

Richard

--
Real email address is RJS at BIGFOOT dot COM

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