Trane S9V2B040U3VSAE - 18 Fault Code

S9V2-VS-SVX001-1B-EN
113
DEFINITION:
This fault is generated when the IFC
does not see a send message itelf.
18 Fault Code
Does the error code
change to E17?
With power on,
remove the 4 pin
motor connector from
the IFC
Verify harness and
wiring connec!ons.
YES
See addi!onal motor
troubleshoo!ng
Replace IFC
NO
Serial Motor
Troublesho!ng
TTrroouubblleesshhoooottiinngg