AC & Heat Pump

AC Troubleshooting Guide
Troubleshooting Chart
Pressure Temp. Chart
Component Analysis

Furnaces, Boilers & Radiators

Pilot Reignition Furnace
Standing Pilot Furnace
Hot Surface Ignition Furnace

Air Quality Components

Basic Troubleshooting

Thermostats & Controls

Basic Troubleshooting
Programming Tips
Advanced Programming

Additional Information

Material Safety Data Sheets
Web Links
Equipment Size Calculator
Equipment Tech Guides

Home Owners Section

HVAC Technical Support Pilot Re-ignition Furnace troubleshooting

 Pilot Will Not Light
  No Spark At Electrode
  Spark Shorting Out To Main Burner
  No Gas At Pilot Burner

 Burners Will Not Ignite
  No. 115-Volt Power To The Furnace
  No 24-volt Power To Control Circuit
  Miswired, Loose Connections Or Open Control Circuit
  No Gas At Main Burners
  Hot Surface Igniter Failure

 Blower Operates Continuously
  Thermostat Fan Switch In ON Position
  Fusible Link Blown
  Dirty Filter Causing Limit Switch Operation
  Defective Heat Relay

 Inadequate Heating
  Furnace Undersized For Application
  Gas Input To Furnace Too Low
  Limit Switch Cycles Main Burners

 Aldehyde Odors (CO), Sooting Flame, Floating Flame
 Thermostat Calls For Heat.