PDA

View Full Version : American standard furnace gas valve will not open


dcoggs3
Nov 8, 2010, 05:15 PM

mygirlsdad77
Nov 8, 2010, 05:28 PM
Is it getting correct voltage when it should be opening?

dcoggs3
Nov 8, 2010, 05:32 PM
Yes the gas valve receives 24v for abot 2 seconds then nothing

ivanh
Nov 8, 2010, 07:42 PM
Check electrical polarity of power wiring to furnace. Some newer units will turn into a pumpkin if the a/c power polarity is not correct. Just reverse hot/neutal wires. Usually get trouble flash on mother board also.