B
buckley plumb
been to a biasi m90 24s to day no flashing lights but no hw or htg. the fan was pulsing on and off. checked aps which was ok .biasi are saying its the ignition board the relay on it is sticking.if i removed the silicon aps tube the fan constantly runs at a fast speed but if i removed the wires from the aps and linked the common and the normal closed the fan run super fast.was told by biasi if fan runs when aps silicon tube is pulled off then its the board relay.ordered board but whats puzziling me is why the fan runs super fast when the nc is linked to common and why removing the aps silicon tube makes fan run .
ant
ant