sime 80e wont work?

sime 80e ignition sparks and lights pilot light,fan runs,pump runs but will not open main gas valve. cant find a thermo couple think ignition high tention lead sense's some how? their is no voltage at the pcb board to the main gas valve only to the pilot light valve please help
a.hindmarsh, March 2005


done
HI DOES IT HAVE A FAN PRESSURE SWITCH?

JMSGAS, March 2005
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