Harman Stove Company PB 105 manual Operation, Status Light

Operation

Power Light

Indicates power to the control board.

Status Light

Will be lit anytime there is a call for heat.

Overheat Safety Zone Light Indicates elevated boiler water temperature. Power flowing to Overheat circuit.

Combustion Blower Light Indicates Power to combustion blower

Feed Motor Light Indicates

Power to the feed motor.

Igniter Light

Indicates power to the igniter

Max Temp dial

The “Max Temp Dial” is used to set the desired maximum operating temperature of the boiler.

Feed adjuster

Sets the maximum feed rate

Test

Combustion blower, feed motor and safety dump zone are fully energized for the first minute. Afterward, combustion blower remains on low only.

Lighting Mode Selector Switched between Auto and Manual lighting

Mode Selector/Min Temp Dial

Used to turn the boiler on or off and set the desired minimum operating temperature of the boiler.

Diagnostic Port

For diagnostic purposes only. Requires special DDM monitor supplied to trained technicians exclusively.

Status light error messages:

3 Blinks: Indicates that the ESP (Exhaust Sensing Probe) has gone out of range, too many times. May indicate axcessive ash build-up in the exhaust stream. If the unit seems to be operating normally, perform a manual reset by cycling the main power off for a few seconds and re-connect.

4 Blinks: Indicates miscommunication with the aquastat, or the sensor is not attached properly. May require a manual reset.

5 Blinks: (In Auto Light Mode Only)

Indicates that the igniter has failed to light the fire after 40 Minutes. To reset - Turn the Mode Selector/Min. Temp. to OFF and then back to the desired temperature.

6 Blinks : Indicates that the control has calculated poor or incomplete combustion occurring for 25 or more minutes. A six blink status may be set if the stove is allowed to run out of pellets. To reset, turn Mode Selector/Min Temp dial to “OFF” then back on to the desired temperature. If the unit was not out of pellets, see Troubleshooting section, Page 34, for more details.

7 Blinks: Boiler water over heat safety shut down. This re- quires a manual reset by cycling the main power off for a few seconds and re-connect. See explanation on page 20.

Mode Selector/Min. Temp.

Used to turn the boiler on or off and set the desired minimum operating temperature of the boiler.

Max. Temp./ Min. Temp. Water Temperature Settings See “Setting the boiler temperature” found on page 24.

OFF Mode

Turning the Mode Selector/Min.Temp. to OFF will shut down the boiler.

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