CARE AND OPERATION
Control Board Operation
Stove ON/OFF Button – This button will turn your stove on or off while in Manual or Automatic mode (see Page 20 for details). The green ON/OFF light at the top of control board will indicate the ON/OFF status.
Heat Select Button Ð The heat select button has three selection settings, Low, Medium and High. Pressing the button will scroll the red indicator lights from Low to High. The button controls the pellet feed and combustion airflow simultaneously. The control board is preset to provide the optimum ratio of fuel and air at each setting. Settings can be changed at any time but will only take affect after the
Blower Select Button Ð The blower select button operates the room air blower. This will change the flow of hot air into the room. Three choices are available Low, Medium, and High. When the blower select button is pressed the yellow indicator light will scroll to Low, Medium, or High.
When running your stove on high (controlled with the heat select button), the control board will not allow you to select the low blower speed. This is a safety precaution to protect against overheating. Blower settings can be changed at any time, but will only take affect after the
Fault Mode Ð The control system automatically monitors the flame using a photoeye. If the appliance runs out of pellets the control board automatically goes into a “fault” status. The control board will initiate the shut down cycle and safely shut down the appliance leaving it in the “fault” mode. The ON/OFF indicator light near the top of the control board will flash rapidly when in this mode. After refilling the hopper with pellets, press the ON/OFF button. If a thermostat is not being used the stove will go into the
Note: If the fuel feed trim or combustion air trim needs to be adjusted, contact an authorized Lennox Hearth Products Technician to calibrate internal software. It is recommended that the damper be used to
Power LED | Stove | ||
ON/OFF | |||
(fault when | |||
Button | |||
ßashing) | |||
(& start | |||
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| button) | |
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| Heat | |
Heat LED | Select | ||
Button | |||
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| (Heat | |
| Heat | output | |
| Calib. | control) | |
Blower | Blower | ||
LED | Select | ||
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| Button | |
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Figure 33 - Control Board
Note: The control board has an internal memory which recalls the last setting prior to loss of power. Because we individually check each stove prior to packaging, one of the two scenarios will appear when you first plug in your pellet appliance.
1).The Green LED at the top of the control board will illuminate and the blowers will be running. This is a standard cool down mode and will last no longer than five minutes. This happens during testing when the stove is turned off (which initiates cool down mode) and then is unplugged.
2).The Green LED at the top will illuminate and the red and yellow LED’s will illuminate on the control board, indicating that the appliance is in the run mode. This happens during testing if the stove is unplugged without first turning the control board off (the control board remembers its last setting, which was the run mode).
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE
If your appliance follows what is described in number 2, simply press the ON/OFF button once to turn the appliance off, this will initiate the cool down mode. The appliance can be restarted at any time during the cool down mode by pressing the ON/OFF button once.
Flame Detection Sequence of Events - This is what happens after flame has been detected.
•Happens within the
•0 to 1 minute no fuel feed.
•Flame settles.
•Bed of embers built.
•1 minute mark: Fuel Feed rate 20% for 4 minutes15seconds(1secondon/4seconds off).
•2 minute mark: igniter turns OFF / room air blower = panel setting.
•5 minute 15 seconds mark: exhaust blower = panel setting / LED indicator still active.
Photoeye
P/N
Label
Location
Power
Select
Main
Harness
Fuse
Figure 34 - Control Board (backside)
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