6. ON/OFF BUTTON: Used to turn the unit ON and OFF. Push this switch to start or stop the unit when
the unit is operating in manual or HIGH/LOW thermostat mode (ON/OFF is automatic once the stove
has been started once).
7. HEAT LEVEL ADJUSTMENT: When pressed, will change the heat setting of the unit from low to
high.
8. HEAT OUTPUT INDICATOR: Shows the present heat output setting.
9. THERMOSTAT SWITCH (DHC 3000): Used to set the unit’s controls to one of three mode settings;
manual, high/low, or auto/off.
ConTrol Board FunCTions - dHC 4000 & 4100:
1. AUGER LIGHT: This green light will flash in conjunction with the auger pulse.
2. MODE LIGHT: Responsible for signaling the state of the control board. When the light is flashing the
stove is in an automatic start mode or the thermostat has control of the unit. When the light is solid,
the Heat Level Setting can be altered.
3. THERMOSTAT SWITCH: Used to set the unit’s controls to one of three mode settings; manual,
high/low, or auto/off.
4. FEED RATE TRIM BUTTON: Used to change the feed rate trims in ¼ second increments for all feed
settings. When this button is pressed, all the lights will light up on the Heat Output Indicator except for
ROOM AIR
FAN ON/OFF
ON/OFF
FEED RATE
TRIM
COMBUSTION
BLOWER TRIM
HEAT LEVEL
AUTO/OFF
HIGH/LOW
MANUAL
AUGER
C-11625
MODE
ROOM AIR
FAN ON/OFF
ON/OFF
FEED RATE
TRIM
COMBUSTION
BLOWER TRIM
HEAT LEVEL
AUTO/OFF
HIGH/LOW
MANUAL
AUGER
C-11625
MODE
1
2
3
4
5
6
8
7
9
the one that shows the current setting; the default
setting is the number 4 light. To adjust the setting
hold the Feed Rate Trim button down and press the
Heat Level up or down buttons to adjust the setting.
5. COMBUSTION BLOWER TRIM BUTTON: Used
to change the Combustion Blower trims in 5 volt
increments for all feed settings until it reaches line
voltage. When this button is pressed, all the lights
will light up on the Heat Output Indicator except for
the one that shows the current setting; the default
setting is the number 2 light. To adjust the setting
hold the Combustion Blower Trim button down and
press the Heat Level up or down buttons to adjust
the setting.
6. ON/OFF BUTTON: Used to turn the unit ON and
OFF.
7. ROOM AIR FAN ON/OFF BUTTON: Used to turn
convection fan on or off. This button is inactive is
some programs.
8. HEAT LEVEL ADJUSTMENT BUTTONS: When
pressed, will change the heat level setting of the unit
up or down.
9. HEAT OUTPUT INDICATOR: Shows the present
heat output setting. The bottom is position #1 and
the top is #5
Figure 6: DHC 4000 & 4100 Circuit Board
Control Panels.
Stove Controls
10