Forum Discussion
Old-Biscuit
Jan 15, 2014Explorer III
OK you have a Suburban Furnace with a simple t-stat (controls furnace only). Like this one.......
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OFF is off.
When you move temp set point lever do you hear any click at t-stat?
Does the furnace blower come on?
Blower has to come ON first...it blows purging any propane out of combustion chamber before spark electrode fires (safety). No blower......nothing else will happen.
Pull t-stat cover off....disconnect RED and White Wires from t-stat.
Touch them together. Furnace blower should come on.
If it doesn't then remove front grill/cover on furnace and see if there is a small circuit breaker (DC) tripped (small On/Off switch). Turn it off then back on and see if blower comes on.
If blower comes on and the off.......switch tripped. Blower motor is probably bad.
If blower doesn't come on check for DC power to/thru that switch.

OFF is off.
When you move temp set point lever do you hear any click at t-stat?
Does the furnace blower come on?
Blower has to come ON first...it blows purging any propane out of combustion chamber before spark electrode fires (safety). No blower......nothing else will happen.
Pull t-stat cover off....disconnect RED and White Wires from t-stat.
Touch them together. Furnace blower should come on.
If it doesn't then remove front grill/cover on furnace and see if there is a small circuit breaker (DC) tripped (small On/Off switch). Turn it off then back on and see if blower comes on.
If blower comes on and the off.......switch tripped. Blower motor is probably bad.
If blower doesn't come on check for DC power to/thru that switch.
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