Trane S9V2B040U3VSAE Installation, Operation And Maintenance Manual page 108

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
DEFINITION:
The flame sense current is less
than 0.5 micro-amp DC
Important:
LP applica ons must have
SEN02662 flame sensor installed.
This sensor is iden fied by having a
brown stripe / brown ceramic body
Correct flame sensor
NO
loca on
Replace flame
Check opera on
Flame Sensor
To measure flame current, use a VOM set to
DC micro-amps. Connect voltmeter leads in
series with flame sensor circuit, see
illustra on
108
Ensure all burner flames directed into
heat exchanger with a ght pa ern?
(inadequately aired burners tend to
Is flame sensor
located correctly? YES
See figure
YES
sensor
08 Fault Code
st
Make a call for 1
stage hea ng
Once flame has been
established, set meter to DC
volts and measure flame
current
roll back)
Is flame current
measured less than 0.5
micro-amp DC?
NO
Flame sensor is good.
Check wiring and / or
connec ons.
S9V2-VS-SVX001-1B-EN