Operating instructions

AVR Pellet Control Board
Installation/Service Instructions 250-00011
Page 4 of 10 Printed 1/23/06
Diagnostic Codes (Qualified Service Personnel Only) - Continued
System Snap Disk Fault
Fault light and #4 heat indicator blinking.
This fault code is caused by a heat sensitive switch that tells the control board if the appliance is hot or cold.
During operation if the unit runs out of pellets or looses its fire this switch will communicate to the control
board that the stove is getting cold. The control board will shut off the auger functions and initiate a twenty
minute combustion fan safety cool down. Another condition that will trigger this fault code is a failed start.
When the appliance is started the control board initiates a 30 minute timer, if the appliance is cold at the end
of this 30 minute start up timer the control board will indicate a #4 fault and initiate a 20 minute combustion
fan cool down.
Likely causes:
• Unit ran out of pellets.
• Fire went out during operation.
• Unit was cold at the end of a start cycle (fire did not light).
• Faulty snap disk.
Safety or Hopper Snap Disk Fault
Fault light and #6 heat indicator blinking.
This fault code is caused by the safety or hopper snap disk registering an over-heated appliance during
operation. The control board then shuts down the auger and the convection and combustion blower will run at
maximum output for a 40 minute safety cool down cycle. The only way to stop this cool down is to unplug the
appliance to reset the control board.
Likely causes:
• Faulty snap disk
• Corroded, loose or broken Snap Disk wiring.
• Failed, plugged or blocked convection blower.
• Reduced air flow into the motor compartment such as blocked air vents on panels or doors.
• Missing refractory.
• Improper fuel type.
• Unauthorized parts used in the pellet feed system.