Hearth and Home Technologies IntelliFire Touch IFT-RC400 - IntelliFire Touch Ignition System Troubleshooting; ECM LED Error Codes and Descriptions; Pilot Ignition - Sparking Issues; Pilot Ignition - No Noise or Spark

17 Hearth & Home Technologies • IFT-RC400 & IFT-ACM Installation Instructions • 2326-982 Rev. Q • 4/21
DANGER
Risk of Explosion
DO NOT cycle the ON/OFF/REM selector
switch more than one time within a ve minute
period. Gas may accumulate in rebox. Call
a qualied service technician.
Troubleshooting
With proper installation, operation and maintenance your
gas appliance will provide years of trouble-free service. If
you do experience a problem, this troubleshooting guide
will assist a qualied service technician in the diagnosis
of a problem and the corrective action to be taken. This
troubleshooting guide can only be used by a qualied
service technician.
Symptom Possible Cause Corrective Action
Pilot won’t light, module clicks but
no spark 90 sec, 3 Red/1 Green
Lock out.
Incorrect wiring.
Verify ‘S’ (White) sense wire and ‘I’ (orange) ignitor wire are
connected to correct terminals on IFT-ECM.
Loose connections or electrical
shorts in wiring.
Verify no loose connections or electrical shorts in wiring from
module to pilot assembly. Verify wire insulation is not dam-
aged. Verify wires are not grounding out to chassis, pilot burn-
er, or any other metal object. Replace any damaged wires.
Ignitor gap is too large.
Verify spark gap is approximately 0.095” (2.41 mm) to 0.135”
(3.43 mm).
Pilot won’t light, there is no noise
or spark.
No AC power, AC/DC adaptor
faulty, backup batteries (if
being used) depleted, IFT-
ECM slider switch in OFF
position.
Verify IFT-ECM slider switch is in ON or IFT-REM position.
Verify AC power available to junction box. Verify AC/DC adap-
tor is plugged into junction box and ECM. Verify AC/DC adaptor
output voltage is between 5.7-6.3 Vdc. If battery pack is used,
check battery pack voltage is >4.2 V (if not, replace batteries).
Shorted or loose connection
in system wiring or wiring
harness.
Verify system wiring conguration. Remove and reinstall wir-
ing harness that plugs into module. Check continuity of wires
in valve wiring harness. Replace any damaged components.
Poor or no system ground.
Verify black ground wire in valve harness is connected to metal
chassis of replace.
Pilot won’t light, there is no noise
or spark, 2 Red/1 Green Lockout.
Pilot solenoid not detected.
Check if valve harness orange wire is connected to pilot so-
lenoid valve. Check pilot solenoid resistance, nominal is 40
ohms. If open or shorted, replace valve. Check valve harness
wire continuity, if open replace 6-pin harness.
Pilot won’t light, there is no noise
or spark, 2 Red/2 Green Lockout.
Spark coil failure. Replace ECM.
ECM LED Error
Codes
Description
3 Red: 1 Green IFT-RC400 error message: ‘Appliance Safely Disabled’, pilot sparks for 90 sec, no ame
rectication.
2 Red: 1 Green IFT-RC400 display: ‘Error Pilot Flame’, pilot valve solenoid not detected.
2 Red: 2 Green Sparking feedback signal error, spark coil failure.
5 Red: 1 Green IFT-RC400 display: ‘Error Power Vent’ (if installed).
IntelliFire Touch Ignition System
Error Codes:
Troubleshooting:
See Troubleshooting matrix for more detail on Lock-out Error Codes, Possible Causes and Corrective Actions.