Trane A952V040BU3SB Installation, Operation And Maintenance Manual page 117

Defini on:
Condensate Pressure Switch Open: The condensate system is
not free flowing and opened the safety switch OR
Inducer Limit: This error is normally caused by improper
installa on or applica on of the furnace ven ng system.
Inducer limit switch is
Allow me for inducer limit to cool.
Verify ven ng and vent termina ons
are within allowable lengths and clear
of any obstruc ons.
Is Inducer Limit cool
and contacts closed?
Possible Causes:
Incorrect Limit switch installed
Inducer malfunc on
Heat exchanger malfunc on
DEFINITION:
Internal control board error.
Communica on error
between the inducer and
blower motor micro-
processors
A952V-SVX001-1B-EN
Correct condensate
YES
drain system
YES
open.
Replace Inducer Limit switch.
YES
09 Fault Code
st
Make a call for 1
stage hea ng
Is 24 VAC measured
across condensate
pressure switch?
NO
Is 24 VAC measured
across inducer limit
switch?
Correct ven ng
NO
system
Check opera on
10 Fault Code
Replace IFC
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
NO
Are ven ng and vent
termina ons are within
allowable limits and
clear any obstruc ons.
YES
Replace IFC
117