INSTALLATION INSTRUCTIONS - Lennox
INSTALLATION INSTRUCTIONS - Lennox
INSTALLATION INSTRUCTIONS - Lennox
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Troubleshooting: Continuous Fan Sequence of Operation<br />
CONTINUOUS HEAT SPEED FAN SEQUENCE OF OPERATION<br />
LED: SLOW FLASH RATE REMAINS<br />
UNCHANGED THROUGHOUT SEQUENCE.<br />
MANUAL FAN SELECTION MADE AT THERMOSTAT.<br />
CONTROL (G) ENERGIZES SYSTEM FAN AT HEAT<br />
SPEED. EAC TERMINAL IS ENERGIZED.<br />
THERMOSTAT CALLS FOR HEAT (W).<br />
NO<br />
YES<br />
HUM TERM. ENERGIZES<br />
WITH COMB. AIR INDUCER.<br />
THERMOSTAT CALLS FOR COOLING.<br />
YES<br />
SYSTEM FAN SWITCHED TO COOL SPEED.<br />
EAC TERM. REMAINS ON.<br />
NO<br />
SYSTEM FAN REMAINS ON<br />
HEATING SPEED.<br />
THERMOSTAT OPENS.<br />
THERMOSTAT OPENS.<br />
HUM TERM. DE−ENERGIZES<br />
WITH COMB. AIR INDUCER<br />
MANUAL FAN SELECTION MADE AT THERMOSTAT.<br />
CONTROL (G) ENERGIZES SYSTEM FAN AT HEAT<br />
SPEED. EAC TERM. ENERGIZED.<br />
SYSTEM FAN REMAINS ON<br />
HEATING SPEED.<br />
Repair Parts List<br />
The following repair parts are available through <strong>Lennox</strong> dealers. When ordering parts, include the complete furnace model<br />
number listed on the CSA nameplate −− Example: G43UF−24B−045−3. All service must be performed by a licensed professional<br />
installer (or equivalent), service agency, or gas supplier.<br />
Cabinet Parts<br />
Upper access panel<br />
Blower access panel<br />
Top Cap<br />
Control Panel Parts<br />
Transformer<br />
Integrated control board<br />
Door interlock switch<br />
Blower Parts<br />
Blower wheel<br />
Motor<br />
Motor mounting frame<br />
Motor capacitor<br />
Blower housing cutoff plate<br />
Heating Parts<br />
Flame Sensor<br />
Heat exchanger assembly<br />
Gas manifold<br />
Combustion air inducer<br />
Gas valve<br />
Main burner cluster<br />
Main burner orifices<br />
Pressure switch<br />
Ignitor<br />
Primary limit control<br />
Flame rollout switches<br />
Combustion air inducer auxiliary limit<br />
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