8
Hearth & Home Technologies • IFT-RC400U User Manual • 2564-983 • 10/20
Frequently Asked Questions/Troubleshooting
(continued)
Symptom
Possible Cause
Corrective Action
The flame height setting on the
IFT-RC400 does not appear to
be functioning properly.
Stepper motor is not connected.
Check if the 4 pin wiring harness from the stepper motor is
connected to the IFT-ECM.
Appliance lights not working.
Ember/backlighting malfunction.
Using an RMS voltage meter, check the voltage coming out of
the lights port on the IFT-ACM when the lights are set to highest
level on the IFT-RC400. If the voltage measured is close to 120V
AC then power down the appliance and install a new light kit and
verify if the issue has been resolved.
Fuse in IFT-ACM is blown.
Using an RMS voltage meter, check the voltage coming out of the
lights port on the IFT-ACM when the lights are set to highest level
on the IFT-RC400. If voltage measured is closer to zero, then
replace the IFT-ACM itself.
IFT-ACM is not responding to IFT-
RC400.
Follow steps listed in the second symptom.
Lights are not plugged into IFT-
ACM.
Check wiring and connections.
LED controller is not functioning.
Some appliances come with an LED controller that plugs into the
Lights port on the IFT-ACM. Verify its wiring and that it is function-
ing and if not replace it and verify if the problem is resolved.
IFT-RC400 displays the following
message on -screen: Sorry your
appliance did not start. Try again
by pressing Flame On.
No gas to appliance.
Accumulation of air in gas line
from extended period of appliance
inactivity. Gas control system
failure.
Verify that appliance has power and gas. Verify that the appli-
ance accepts flame ON commands with an audible beep, and
successfully turns flame on within 90 seconds. If this failure per
-
sists, contact dealer for service.
ODS Error
Low room oxygen available
Check fresh air accessibility to room.
ODS sensor unit faulty
Replace ODS sensor unit.
Power Vent Error
Faulty Power Vent Blower
Replace Power Vent Blower.
Vacuum Switch or wire
connection faulty
Check wire and vacuum switch continuity with a digital volt-
meter.
Vacuum switch negative air
pressure chatter
Change position of vacuum switch or reduce wind disturbance
with baffle.
Pilot Flame Error
Flame sense rod or wire shorted
to DC ground (chassis ground).
Locate short and repair.
Faulty pilot assembly
Replace pilot assembly.
Flame sense wire disconnected
Verify Flame sense wire connected.
Hard Lockout Error
Verify hard code lockout (RC400
error condition described, and
red/green LED flash condition on
the IFT-ECM)
Your appliance has been safely disabled. Please contact your
dealer for service.
