67
March 2011
Flex Fuel Owner’s Manual
Safety temperature limiter has tripped!
The furnace temperature can rise above 194 °F if there is a sudden reduction in heat demand.
In this case the built-in safety temperature limiter will trigger a fast shutdown of the furnace.
Fault rectification
1. Wait until the furnace temperature falls below158 °F.
2. Unscrew the screw cap on the safety temperature limiter (located in front of the display) and briefly
press the reset button with a small, pointed object to reset the safety temperature limiter. Screw the
screw cap back onto the safety temperature limiter.
3. Press the control knob on the display. The induced draft fan runs down (“Fan lag! Please wait!”).
4. Press and hold the control knob for three seconds. The furnace will then be operational again.
Induced draft fan fault!
The induced draft fan has caused an error.
The following potential causes could result in this error message:
• Fault or loose cabling on fan motor
• The induced draft fan is jammed
• The induced draft fan is faulty
Press Start to activate the fan run-on time (approximately 20 minutes). If combustion is still in progress,
the furnace automatically switches to “Bulk materials” mode, otherwise the fan completes its fan lag
cycle and the furnace shuts down. Press the ESC button to switch off the furnace!
Feed blocked or overloaded!
The causes for this error message could be:
• the feed motor is defective or blocked
• the insert is dirty
• the firebox is overfilled
• the feed motor is incorrectly connected or not connected at all
• blockage at the transfer station between the pellet arm and hopper
If the cause of the feed motor blockage is overfilling of the firebox, then let the furnace burn
out. After the furnace has cooled, check the insert for contamination (cinders, unburned pellets …) and
clean if necessary. After the control knob is pressed, the furnace starts as soon as a system component
makes a request. If the error message occurs again upon the next start attempt, then press the ESC key
and inform an authorized WoodMaster Flex fuel Dealer.
16: Error Messages