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