42
Service Facts
X343070P08
9 Flash Fault LED
YES
NO
Allow time for inducer limit to cool.
Verify venting and vent terminations
are within allowable lengths and
clear of any obstructions.
Is Inducer Limit cool
and contacts open?
Replace Inducer Limit
switch. Check operation
YES
NO
Definition:
This error is normally caused by improper
installation or application of the furnace
venting system.
Disconnect electrical power
from the furnace and remove
1 wire from the limit switch.
Is continuity
measured across
inducer limit switch?
Verify venting and vent terminations
are within allowable limits and clear
any obstructions.
Inducer limit switch is
open.