Trane S9V2B040U3VSAE - 6.3 Fault Code

106
S9V2-VS-SVX001-1B-EN
DEFINITION:
Igniter Relay Fault – The control board has sensed
that the igniter relay has stuck closed
Ignitor Fault – The control board has sensed that
the ignitor circuit is open or shorted.
Verify igniter harness is
not damaged and
connectors are !ght
Disconnect igniter
and check resistance
Is resistance
reading between 37
– 70 ohms?
(at ~75F)
NO
Replace ignitor.
Check opera!on
YES
6.3 Fault Code
Igniter is good
Does igniter
glow?
Make a call for 1
st
stage hea!ng
Igniter is good
Replace IFC
YES
YES
Is 120 VAC
measured between
IGN-H and IGN-N?
Replace IFC
NO
Disconnect electrical
power to the furnace
YES
NO
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