Trane A952V040BU3SB Installation, Operation And Maintenance Manual page 116

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
There are two flame sense pads located on the IFC,
marked "FP". To measure flame current, use a VOM set
to DC volts. Flame current will vary depending on the
type of meter used. Typical flame current ranges from
0.75 – 3.0 micro-amps (0.75 – 3.0 VDC)
116
established, set meter to DC
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
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.
A952V-SVX001-1B-EN