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The
furnace is very trouble free in operation when properly maintained
and quality corn is used. When the furnace fails to operate properly,
troubleshooting by the operator of the furnace is limited.
Please read the following guide for answers to frequently asked questions:
1. No fuel is being dispersed?
Solution: Insure the auger tube is primed. If it is, check for jams or that the lid is closed (the micro switch on the hopper will not let the auger run if open.) If not, press manual feed to prime the auger.
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2. My furnace keeps overloading the burn pot.
Solution: First, check to see the air box ash drawer is in all the way. If so, check the moisture content of your corn. It should be 15% or less. Also make sure you are using clean corn. Otherwise this is mainly caused by improper combustion (See Damper Adjustment section of the Operations Manual). Besides the damper adjustment, there are several areas that can have an effect on the combustion process. Check all gaskets, doors and door latching systems for air leaks. Any leaks in these areas will negatively affect the burn process and cause the pot to overload.
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3. My furnace isn’t burning and the number 2 LED light
is blinking.
This diagnostic light indicates the Proof of Fire switch no longer senses a flame
in the firebox area of the furnace. What caused the furnace to go out?
a. The door of the unit was left open longer than 90 seconds.
b. The ash pan door was left open longer than 90 seconds.
c. The Proof of Fire switch is defective.
Solution: If the fire is out, re-light the furnace. Make sure all doors
are securely latched and hold down the On/Off button (approximately 5 seconds)
until furnace starts up again. This will re-start the furnace in the start-up
program. Occasionally use the auger button to manually feed fuel until the auto-
feed takes over (auto feed will start 7-8 minutes after the furnace has been
restarted).
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4. My furnace isn’t burning and the number 1 LED light
is blinking.
This diagnostic light indicates that the Vacuum switch no longer senses a vacuum
in the furnace.
Solution: Check inner door gasket and ash pan gasket to insure good seal.
Check to see if combustion blower is still operable.
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5. My furnace isn’t burning and the #5 is blinking.
This means the power was interrupted at some point and the unit shutdown.
Solution: Restart furnace if power has been restored.
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6. I turned the furnace on with the On/Off switch and nothing
happens.
Solution: First check to see if the Furnace is plugged in and the receptacle
has power to it. Check the fuses on the back of the control board. Replace with
a 250mA fuse.
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7. I turned the furnace on with the On/Off switch and the
board lights up and the fans come on, but the pot doesn’t go into self-clean.
Solution: Check for proper seal on door gaskets. Actuators will not move
unless vacuum is detected.
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8. Why is my glass dirty?
Normal operation of your Fahrenheit Technologies Inc. Corn Furnace will produce
a white build-up on the glass that wipes off with a dry paper towel. However
extended burning on the low setting only will produce a light tan color. These
types of build-ups on the glass are normal. A heavy black build-up on the glass
could indicate a problem.
Solution: Adjust the combustion air setting to the proper setting. If
this doesn’t seem to help, make sure the clean out cover plates are installed
in the furnace. It also could be an indication that the furnace is getting plugged
and needs a good cleaning. Refer to the section in the manual that covers the
daily, periodic and yearly maintenance of the furnace.
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9. How do I adjust my pilot feed rate settings (#1 setting)?
Not all fuel burns at the same rate. The moisture content of corn greatly influences
how it burns. Following is a description of the function of the feed trim button.
Solution: The auger trim mode on the control board allows the feed rate
on #1 (Pilot setting) to be increased or decreased. Default is level LED #3.
Arrow up to increase corn and arrow down to decrease corn. Different types of
fuel and the way the furnace is installed will affect the low burn and needs
attention during the break-in period of the furnace.
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10. How do I adjust the draft for the Pilot settings (#1
setting)?
Solution: Following is a description of the function of the Fan Trim button.
The draft trim mode on the control board allows the draft fan speed to be increased
or decreased. Default is level #3. Arrow up to increase air and down to decrease
air. This may be used in a venting situation that is restrictive, a long horizontal
run or a venting system with excessive elbows for instance. Before calling your
dealer for assistance, please read your Installations and Operations Manual and
perform all the maintenance issues covered in the Daily and Periodic Maintenance
section of the manual. If the furnace still does not operate correctly, call
your dealer for assistance.
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