The St. Croix pellet stove control board is a vital component that manages all stove functions by monitoring various sensors and controlling feed times. These sensors regulate general operation and safety, ensuring the unit shuts down if a problem is detected. Additionally, the control board includes diagnostic capabilities that assist in troubleshooting key operational aspects.

Control Board Features and Functions
The control board has four buttons, a slide switch for thermostat mode, an LED light bar that indicates heat settings, and error codes. Understanding these features allows for better control and troubleshooting of your stove.
Buttons
On/Off
Turns the stove on and off
Resets the control board when a diagnostic code is flashing due to a detected issue
Auger Feed
Manually feeds pellets into the burn pot, which is especially useful when priming the auger tube after running out of fuel
Assists in fine-tuning feed rates and combustion air adjustments
Heat Level
Adjust the heat setting between levels 1 and 5. The higher the number, the more it feeds
Fan Trim (Exhaust Fan Adjustment)
Fine tune's the combustion fan voltage to control airflow
Helps optimize burn efficiency and prevent excessive ash buildup
Adjustments
Adjusting Feed Rates
Hold the Auger Feed Button and press the Heat Level High/Low Button
Each adjustment modifies the ON time by 0.25 seconds
The LED lights indicate the current setting
The center LED represents the factory default setting
Adjusting Combustion Fan Voltage
Hold the Auger Feed Button and press the Trim High/Low Button
Adjustments modify fan voltage by approximately 2.5 volts
LED lights indicate the current setting, with the center LED as the default
Thermostat Modes
The St. Croix control board allows for three thermostat modes:
Manual Mode
The stove operates independently without a thermostat
All functions are controlled manually via the control board
T-Stat Mode
Connects to an external thermostat for automatic operation
The stove turns off when the set temperature is reached and reignites when more heat is needed
Ideal for heating smaller spaces
SmartStat Mode
Keeps the stove running at heat level 1 after the set temperature is reached
If no heat demand occurs within an hour, the stove shuts off
Best used in transitional seasons like fall and spring
Other Features
Diagnostic Capabilities
The control board helps diagnose three essential areas of the stove:
High-Temperature Limit
Prevents overheating by shutting down the stove if excessive heat is detected
Proof of Fire Sensor
Ensures that a fire is present and sustaining combustion
Vacuum in the Firebox
Monitors proper airflow to maintain safe and efficient operation
Cleaning Cycle
St. Croix stoves utilize automatic cleaning cycles when operating on heat levels 3-5.
The unit temporarily reduces to heat level 1 for five minutes at timed intervals.
The combustion fan runs at full voltage to blow excess ash out of the burn pot.
The On/Off light will blink during this process.
Final Thoughts
Understanding the functions of the St. Croix pellet stove control board allows you to optimize performance, troubleshoot issues, and make necessary adjustments for maximum efficiency.
By using the diagnostic capabilities, thermostat modes, and fine-tuning features, you can maintain a reliable and effective heating experience throughout the winter season.
For more troubleshooting tips and maintenance guides, visit Northeast Pellet Stoves.
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