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  • Heat Repair In DC

  • Heat Repair In DC

      Natural gas and propane burn cleaner than fuel oil, and most gas furnaces present fewer operational difficulties than oil burners do. In fact, the problems that affect gas furnaces typically involve the furnace’s thermocouple, the pilot light, or some component of the electrical system.
  • Heat Repair In DC

  • Heat Repair In DC
    Gas furnaces and heaters have control shutoffs to prevent gas leaks, but they are not fail-safe. If you smell gas in your house, do not turn any lights on or off, and do not try to shut off the gas leading to the furnace. Get out of the house, leaving the door open, and immediately call the gas company or the fire department to report a leak. Do not re-enter your home.

  • Heat Repair In DC

  • Heat Repair In DC
    On some gas furnaces and heaters, a plug-type door covers the pilot light assembly. To gain access to the pilot burner, pull the door out of the furnace housing. On other units, remove the panel that covers the pilot and gas burners.

  • Heat Repair In DC
  • Heat Repair In DC
    The pilot light controls, reset buttons, gas valves, and thermocouple are usually contained in an assembly at the front of the furnace. The furnace limit switch is located on the plenum (main chamber) or main duct junction on the upper housing of the furnace.

  • Heat Repair In DC
  • Heat Repair In DC
    Troubleshooting Gas Furnaces and Gas Heaters
    There are many potential reasons that a furnace might not be working, but fortunately, many of the solutions are as easy as pressing a button. Use this chart to fix a wide range of conditions that prevent your furnace from working.

  • Heat Repair In DC
  • Heat Repair In DC
    GAS AND FURNACE HEATER TROUBLESHOOTING CHART
    Problem Possible cause Solution
    Furnace won’t run
    1. No power.
    1. Check for blown fuses or tripped
    circuit breakers at main entrance
    panel, at separate entrance panel,
    and on or in furnace; restore circuit.
    2. Switch off.

  • Heat Repair In DC
  • Heat Repair In DC
    2. Turn on separate power switch
    on or near furnace
    3. Motor overload.

    3. Wait 30 minutes; press reset
    button. Repeat if necessary.
    4. Pilot light out.
    4. Relight pilot.
    5. No gas.

    5. Make sure gas valve to furnace is
    fully open
    Not enough heat
    1. Thermostat set
    too low.
    1. Raise thermostat setting 5°.

  • Heat Repair In DC
  • Heat Repair In DC
    2. Filter dirty.
    2. Clean or replace filter.
    3. Blower clogged.
    3. Clean blower assembly.
    4. Registers closed
    or blocked.

  • Heat Repair In DC
  • Heat Repair In DC
    4. Make sure all registers are open;
    make sure they are not blocked
    by tugs, drapes or furniture.
    5. System out of balance.
    5. Balance system.
    6. Blower belt loose
    or broken.
    6. Adjust or replace belt.

  • Heat Repair In DC
  • Heat Repair In DC
    7. Burner dirty. 7. Call a professional.
    Pilot won’t light
    1. Pilot opening blocked.
    1. Clean pilot opening.
    2. No gas.
    2. Make sure pilot light button
    is fully depressed; make sure
    gas valve to furnace is fully open.
    Pilot won’t
    stay lit

  • Heat Repair In DC
  • Heat Repair In DC
    1. Loose or faulty
    thermocouple.

    1. Tighten thermocouple nut
    slightly, if no results, replace
    thermocouple.
    2. Pilot flame set
    too low.
    2. Adjust pilot so flame is
    about 2 inches long.
    3. Electric pilot faulty.
    3. Call a professional.
    Furnace turns
    on and off
    repeatedly

  • Heat Repair In DC
  • Heat Repair In DC
    1. Filter dirty.
    2. Motor and/or blower
    needs lubrication.
    1. Clean or replace filter.
    2. If motor and blower have
    oil ports, lubricate.
    Blower won’t
    stop running
    1. Blower control
    set wrong.

  • Heat Repair In DC
  • Heat Repair In DC
    1. Reset thermostat from
    ON to AUTO.
    2. Limit switch set wrong.

    2. Reset limit switch
    for stop-start cycling.
    3. Limit control
    needs adjustment.
    3. Call a professional.

  • Heat Repair In DC
  • Heat Repair In DC
    Furnace noisy

    1. Access panels loose.

    1. Mount and fasten access
    panels correctly.
    2. Belts sticking, worn,
    or damaged.

    2. Spray squeaking drive belts
    with belt dressing; replace worn
    or damaged belts.
    3. Blower belts
    too loose or too tight.
    3. Adjust belt.

    4. Motor and/or
    blower needs
    lubrication.
    4. If motor and blower
    have oil ports, lubricate.

  • Heat Repair In DC
  • 5. Burner dirty.
    5. Call a professional.

    The pilot light is crucial to the operation of the furnace. Learn how to light a pilot light on the next pae.

    Heat Repair In DC

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