jciu
Dec 17, 2007, 08:28 PM
Hi, I've got a goodman furnace (mod. # GHT070-3) it's about 5 years old. Recently, the heat will only kick on for about 30 seconds then shut off. It's giving me 4 flashes: Open limit switch, then it kicks off. After that it gives me 3 flashes and turns back on (pressure switch).
It seems the furnace only does this when it is colder and it has to work harder, because when it's only in the 40-50's or so I don't notice the furnace acting up like this.
I pulled the limit switch out and just physically inspected it, I didn't notice any breaks or anything (though I don't know what to look for).
I looked at the back of the circuit board and didn't notice any burnt circuits.
Any help would be appreciated
Thanks
Joey
It seems the furnace only does this when it is colder and it has to work harder, because when it's only in the 40-50's or so I don't notice the furnace acting up like this.
I pulled the limit switch out and just physically inspected it, I didn't notice any breaks or anything (though I don't know what to look for).
I looked at the back of the circuit board and didn't notice any burnt circuits.
Any help would be appreciated
Thanks
Joey