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View Full Version : Carrier furnace 48ss error 5 innition lock out failure. What can that be.


yodeler
Dec 22, 2010, 05:29 PM
Electric ignition sparks on and off for 5 minutes and 5 flashes show up on led indicator. It is a rooftop model on ground level with built in airconditioning system and its OK. Noticed 2 wires talked about earlier to gas valve brown and grey. 8.6 VAC before spark ingition and 28 VAC during ignition. Gas valve the problem and if so why...