Trane S9V2B040U3VSAE Installation, Operation And Maintenance Manual page 104
Upflow/horizontal and dedicated downflow gas-fired, direct/non-direct vent, 2-stage condensing variable speed furnaces with variable speed draft inducer, upflow, convertible to horizontal right or horizontal left/downflow only
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T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g
:
Polarity Fault – Incoming high voltage
wiring is reversed
Reverse 120 vac
power leads to
furnace wiring
Reconnect power
Check opera on
104
06 Fault Code
Reversed Polarity
Ensure that high voltage wiring
to unit is connected properly
YES
Disconnect incoming
electrical power to
furnace
Connect volt meter
to white incoming
neutral wire and
green earth ground
Is ~120 VAC
read?
NO
Does meter read
more than 50
YES
vac?
NO
Replace IFC
Correct neutral and ground
problem. Furnace must be on a
dedicated circuit.
S9V2-VS-SVX001-1B-EN
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