Diagnostic & Safety Features - St. Croix SCR Installation & Operation Manual

Diagnostic Features of the Control Board
The #2 LED, #3 LED and #4 LED lights on the LED Light bar (See figure 23) will flash
to give a diagnostic code to help in diagnosing problems that may occur.
These conditions fall into 3 categories:
a. Heat related issues.
b. Vacuum related issues.
c. Issues related to the Revolution Pot, either not rotating every 2 hours or if
the pot gets jammed.
The Diagnostic Lights flash as follows:
1. The Proof of Fire switch. This switch will sense the temperature of the Exhaust
rising during start up. If the Exhaust temperature does not reach 110 degrees F, or
if, during use, the temperature drops below 110 degrees F, the Auger will quit
feeding fuel and the drum will start rotating until the Stove completes the safety
shutdown. The #3 LED will start blinking. (See Figure 23 on Page 36)
2. The High Limit switch. This sensor will sense if the unit reaches temperatures
that are too high for normal operation. If this happens the Auger will quit feeding
and the drum will start rotating until the Stove completes the safety shutdown.
The #4 LED light will start blinking. This is the same LED used for the
Revolution Pot Sensor. (See Figure 23 on Page 36)
3. The Vacuum switch. For the Stove to operate correctly the firebox needs to be
sealed. During the first 30 seconds after the Stove has been turned on the control
board will check to see if the switch senses negative pressure (Vacuum) in the
firebox of the Stove. If there is no negative pressure, the Auger will quit feeding
and the drum will start rotating until the Stove completes the safety shutdown.
The #2 LED will start blinking. (See Figure 23 on Page 36)
4. The Revolution Pot sensor. If the pot fails to rotate or jams during a rotation,
both augers are disabled and the drum will start rotating until the Proof of Fire
switch opens. The #4 LED will start blinking. This is the same LED used for the
high limit switch. (See Figure 23 on Page36)
"Internal Alarm" - When the control board becomes unresponsive, the control board is
in Internal Alarm. The control board has sensed one of the Safety Sensors. This may
cause the stove to go out. In some cases, after waiting approximately 45 seconds the
stove will start responding to the control board again. Many times, the cause of this is a
change in the vacuum inside the Stove. This may be caused by excessive wind or by
opening the Firebox door. The control board will monitor the vacuum switch and resume
normal operation if the vacuum returns to normal.
Power Reset" - If the board becomes unresponsive for a long period of time, you must
unplug the Stove, wait 10 seconds and plug the Stove back in to reset the board.
Lincoln SCR Manual
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