KERR KD Gemini User Manual (English)

Questions and Answers:

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Robert BarkerAug 15, 2025
Why won't my KERR KD Gemini Furnace start?
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  susanberryAug 15, 2025
  Your KERR Furnace might not start due to several reasons. It could be a tripped blocked vent switch, in which case you should clear the vent and reset the switch. Alternatively, it might be a tripped breaker, so determine the cause and reset the breaker. A blown fuse could also be the culprit, requiring you to replace the fuse. Finally, check for oil; if there's no oil, check the tank for leaks and call your oil supplier.
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Robert SawyerAug 18, 2025
What to do if KERR KD Gemini Furnace burner reset cuts out?
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  kingscottAug 18, 2025
  If the burner reset cuts out on your KERR Furnace, it could be due to several reasons: * No oil - call your oil supplier. * Frozen oil line - call a technician or oil supplier. * Dirty oil filter - replace the filter. * Dirty nozzle, smoky fire - replace the nozzle and adjust burner air. * Faulty oil pump - have the pump replaced and adjust burner air. * Faulty or dirty electrodes - have a technician clean or replace them.
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Raymond GriffinAug 21, 2025
Why does my KERR KD Gemini oil burner keep turning off?
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  Don FergusonAug 21, 2025
  The oil burner in your KERR Furnace might be turning off due to a dirty air filter – try changing it. Another cause could be a restricted air supply/return; check all air return/supply registers. The limit control might be another reason, so inspect the ductwork for blockage. Also, check if the motor is overheating and verify the motor speed for the correct nozzle on the furnace label settings. Finally, a dirty nozzle can cause this issue; call a technician to replace it.
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Michael SmithAug 25, 2025
What causes a sooty flame in KERR KD Gemini?
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  bhansenAug 26, 2025
  A sooty flame in your KERR Furnace can be caused by several factors. The pump pressure might be incorrect, so increase or decrease the pressure to the correct setting. A dirty nozzle can also cause this, so replace it. Additionally, the burner setting might be improper. Finally, the barometric draft could be wrong; adjust the barometric regulator for -0.04” wc draft pressure at the breech.
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dawn01Aug 28, 2025
Why is my KERR KD Gemini Furnace using too much oil?
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  cindyyangAug 28, 2025
  If your KERR Furnace is using too much oil, there might be an oil leak in the line or tank. Check the fittings for tightness and inspect the tank, replacing it if necessary. Also, the draft regulator might be set too high; adjust the regulator for -0.04” wc draft pressure at the breech. Lastly, the nozzle might be too large, so replace it with a smaller one to lower the input.
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marcandersonAug 31, 2025
Why are warm air registers blowing too hot in KERR KD Gemini Furnace?
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  Raymond CookeAug 31, 2025
  If the warm air registers in your KERR Furnace are blowing too hot, it could be because the blower is running too slow, so speed the blower up. Another reason could be restricted return air, so open up the return air ductwork to ensure adequate airflow. Finally, the nozzle might be too large, so lower the nozzle size to suit the ductwork.
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Todd JohnsonSep 3, 2025
How to fix noisy operation in KERR KD Gemini Furnace?
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  Dustin BrooksSep 3, 2025
  Noisy operation in your KERR Furnace can stem from several issues: * Loose blower wheel: Tighten the wheel set screw or replace it. * Blower wheel hitting housing: Center the wheel in the housing. * Damaged motor bearings: Replace the blower motor. * Faulty oil pump: Repair or replace the oil pump and reset to the correct pressure. * Air leak in oil line: Tighten all connections. * Vacuum too high on pump: Check the pump vacuum, filters, and pump screen.
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michaelstewartSep 7, 2025
Why is my KERR Furnace warm air register blowing cold air?
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  Jared MorrisonSep 7, 2025
  If your KERR Furnace's warm air register is blowing cold air, it could be due to basement cooling ducts. Insulate and seal the ductwork to maintain duct temperature. Alternatively, ducts running through unheated spaces can cause this; change or insulate the ductwork. Also, check if the low speed switch is on and switch off the blower low speed. The “FAN OFF” setting might be too low, so set it higher. Lastly, the motor speed might be set too high; reset the motor speed to slow the blower.
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Edwin DavisSep 12, 2025
How to regulate temperature in all rooms with KERR Furnace?
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  Jeremy MedinaSep 12, 2025
  If you find that all rooms are at different temperatures when using your KERR Furnace, it might be because the supply air is not regulated. Adjust the warm air regulators to suit each room. Additionally, the return air might not be regulated, so check for sufficient return air.