i just replaced my robertshaw 735L with the honeywell 53L90 ignition control. i've connected all the wires based on their instructions but now the fan just runs when i turn up the temp on but the pilot light will not go on. there is indication that the pilot is going to light, no clicking at all. the fan just runs. i don't smell gas. i'm at a complete loss. any help would be greatly appreciated. thanks!
Could be that you have the polarity incorrect into the furnace, or on the hot side of the ignition control. Or could be that there is a fuse blown on the low voltage circuit.