Operating instructions

Pellet Control Board
Installation Instructions 250-00011
Page 2 of 9 Printed 8/13/08
Technical Notes for Operation
Make sure to give the home owner the “Pellet Heater Operating and Troubleshooting Instructions” if
you are replacing an older board (the final 5 pages of this instruction sheet). It contains the new
operating instructions for this control board.
A few changes were made to accommodate the new control board. The start up cycle indicator on the old
board illuminates all heat output indicator lights to show the unit is in a start-up cycle and adjusting the heat
setting knob would not change them. On the new board to enable adjusting the run settings during start-up we
made the start-up indicator the blinking #1 heat output light. If the #1 heat output light is blinking the board is
in a start-up mode and the blower and auger outputs can not be adjusted. The run settings the unit will go to
after start-up are displayed on the heat output indictor. These settings can be adjusted any time during start
up by pushing the up or down heat buttons on the panel. When the fan setting is adjusted up or down the
heat output indicators will turn off and the fan setting will display.
Another feature we added to the control board is a manual auger feed. This button can be used to prime and
empty the auger or speed the initial delivery of pellets to the burn pot. All start-up timing remains the same
and the stove will still self prime the auger tube – this option allows the operator an additional option. It is not
needed for normal operation.
All voltage outputs and feed rates remain the same as the old board. There is a difference in respect to the
auger on/off times. The auger timing was changed to shorten the interval between pellet drops to the burn
pot. For example, on low the auger used to turn for 3 seconds and remain off for 13 seconds, for this same
condition this control board turns the auger for 2.5 seconds and remains off for 10.7 seconds. This produces
the same amount of time the auger is turning and not turning but gives a steadier flame height and less
incidental outages on low.