– 29 –
Filter Board
To remove the main
fi
lter board:
Remove the heat shield. (See
1.
Heat Shield
.)
Lift the front of the module and mark the
2.
location of the black, red, and green wires and
the 2 jumper blades connected to the
fi
lter
board power terminals.
Using a T-20 Torx or a
fl
at blade screwdriver,
3.
remove the 4 screws, black and red wires, and
the 2 jumper blades.
Loosen the ground wire screw and remove
4.
the ground wire from the
fi
lter board power
terminal. Lower the module into the burner box.
5. Mark the location, then disconnect the black L1,
blue L2, and ground wire connections on the
fi
lter board.
6. Disconnect the thermal cut-out, touch board,
and fan motor wire harnesses.
7. On 36-in. models, disconnect the
fi
lter-to-
fi
lter
wire harness.
8. Disconnect the LINbus connectors. (See
LINbus
Connectors
.)
9. Using
a
fl
at blade screwdriver, carefully press in
the large 1 (30-in. model) or 2 (36-in model) tabs
away from the
fi
lter board. Lift the
fi
lter board
and pull the
fi
lter board away from the smaller
tab on the module base.
Bottom of module shown
Tab
Tab
Tab
LINbus
LINbus
Arrows indicate disconnect locations
Remove
Remove
Remove
Remove
Loosen
Jumper
Blade
Jumper
Blade
Touch Board
Wire Harness
Filter-to-Filter
Wire Harness
Note
To remove the left side
fi
lter board on the 36-in. model, follow steps 1, and 5 through 9. The touch board
•
wire harness is not connected to the left side
fi
lter board.
The left side
fi
lter utilizes a non-replaceable fuse. Never attempt to replace the fuse. If the fuse is found to
•
be open, replace both left side
fi
lter and generator boards.
