Lennox G24M3/4-100 User Manual

Page 32
Troubleshooting
MANUAL FAN SELECTION MADE AT THERMOSTAT.
CONTROL (G) ENERGIZES SYSTEM FAN AT CONTINUOUS
ACB LOW SPEED. ACC. TERM. ENERGIZED.
MANUAL FAN SELECTION MADE AT THERMOSTAT.
CONTROL (G) ENERGIZES SYSTEM FAN AT CONTINUOUS
ACB LOW SPEED. ACC. TERM. ENERGIZED.
CONTINUOUS LOW SPEED FAN SEQUENCE OF OPERATION
LED: SLOW FLASH RATE REMAINS
UNCHANGED THROUGHOUT SEQUENCE.
THERMOSTAT CALLS FOR HEAT (W).
THERMOSTAT CALLS FOR COOLING.
SYSTEM FAN ENERGIZES ON ACB HEAT SPEED
AFTER NORMAL DELAY
THERMOSTAT OPENS.
SYSTEM FAN SWITCHED TO ACB COOL
SPEED. ACC. TERM. REMAINS ON.
THERMOSTAT OPENS.
SYSTEM FAN OFF. ACC. TERM. OFF.
(AFTER OFF DELAY COMPLETED).
NO YES
YES
NO
HTGACC. TERM. ENERGIZES
WITH COMB. AIR BLOWER.
G24M Start-up and Performance Check List
START-UP AND PERFORMANCE CHECK LIST
Job Name Job Number Date
Job Location City State/Province Installer
City State/Province
Unit Model Number Serial Number Service Technician
HEATING SECTION
Electrical Connections Tight? Supply Voltage
Blower Motor Amps Blower Motor Horsepower/kw
Gas Piping Connections Tight & Leaks Tested?
Fuel Type: Natural Gas? LP/Propane Gas?
Furnace Btu (kW) Input Line Pressure
Regulator Pressure w.c./Pa -- Nat. w.c/Pa -- LP/Propane
Connections Tight? Proper Draft?
Fan Control Setting (45 Seconds Fixed On) Fan Control Off Setting
Temperature Rise Filter Clean & Secure? Vent Clear?
THERMOSTAT
Calibrated? Heat Anticipator Properly Set? Level?

Lennox G24M3/4-100 Specifications

General

Brand	Lennox
Model	G24M3/4-100
Category	Furnace
Language	English