Forum Discussion
BFL13
Nov 17, 2019Explorer II
With the 8531-IV,(unlike the earlier IIs with no switch) they have a switch right beside the circuit board not far from where the blue wires that go to the thermostat are. You got a new board but is the switch on?
The two blue wires normally go to the thermostat, which is the switch with a "furnace only" thermostat.
I don't know how they are connected with a thermostat that also has the air conditioner to it. With those, apparently the connection is at the air conditioner, then to the furnace.
The two blue wires normally go to the thermostat, which is the switch with a "furnace only" thermostat.
I don't know how they are connected with a thermostat that also has the air conditioner to it. With those, apparently the connection is at the air conditioner, then to the furnace.
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