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What is a limit switch?
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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...
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Hello Folks, This weekend I've been playing with a heating system at my new apartment and I'm trying to figure out what the different componets do. I kind of followed the circuit but still have some missing links... 1-There are some terminals on the furnace's circuit board labeled LIMIT. The... View more questions Search
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