MARQ36IN User Manual

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Majestic • Owner’s Manual MARQ36IN, MARQ42IN • 2270-981 Rev. i • 8/17

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. Contact

your dealer to arrange a service call by a qualied service technician.

C. Troubleshooting

IntelliFire™ Touch

Symptom Possible Cause Corrective Action

Pilot won’t light, module clicks but

no spark 60 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 contnuity of wires

in valve wiring harness. Replace any damaged components.

Poor or no system ground.

Verify black gound 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 60 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).

Error Codes:

Troubleshooting:

See Troubleshooting matrix for more detail on Lock-out Error Codes, Possible Causes and Corrective Actions.

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User Manual - Page 21