INSTALLATION AND SERVICE MANUAL

 WARNING

Should overheating occur or the gas fail to shut off, turn off the manual gas control valve to the appliance.

The unit has a lighted ON/OFF power switch on the outer cabinet (left side) and five (5) LED indicators on the electronic ignition control module to monitor the units operation.

TABLE - P

IGNITION MODULE

INDICATING LIGHTS

IGNITION SYSTEM CHECKOUT

1. Turn off gas supply to appliance.

2. Turn thermostat to highest setting.

3. Turn electric power on.

4. The ignition module will lock out and the

LED will blink.

5. Readjust thermostat to normal setting.

6. Turn on gas supply.

7. Turn power off then on again to reset ignition module.

8. If ignition system fails to operate properly, repair work must be performed by a qualified serviceman or installer.

HOT SURFACE IGNITION SYSTEM

The hot surface ignition module is not repairable. Any modification or repairs will invalidate the warranty and may create hazardous conditions that result in property damage, personal injury, fire, explosion and/or toxic gases.

A faulty ignition module must be replaced with a new unit.

The hot surface igniter is also the flame sensor.

OPERATION AND

DIAGNOSTIC LIGHTS

Indicating Light Function

Power on Switch - On - 120 VAC supplied to unit

Power LED

Purge LED

Ignitor LED

Valve LED

dule

operation.

Flame LED

- On - Module is powered from 24

VAC system and operating properly

- Blinks continuously if voltage is too high on transformer secondary

- Off - Module is not powered

- Off - Combustion air fan is not powered OR air flow is not proven

- On - When unit is in prepurge or interpurge

- Blinks continuously when there is a pressure switch fault

- Off - Igniter is off

- On - When hot surface ignitor is on

- Off - Gas valve is closed

- On - Control signaling gas valve is on

- Blinks continuously when control is in LOCKOUT because it failed ignition

- Off - Flame is not present

- On - Control signaling flame is present

- Blinks continuously when L1 and neutral are reversed

IGNITION AND CONTROL TIMINGS

Prepurge (Combustion Air Fan Only) - 15 Seconds

Time to Prove Pressure Switch (Airflow) - 5 Minutes

Maximum

NOTE:

Pressure switch must open within 45 seconds of call for heat or control will lockout.

Igniter Warm-up Time - 20 Seconds

Trial For Ignition - 6 Seconds

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