Harman Stove Company PB 105 - Manual (Page 24)

24 3-90-07205R19_05/13
Power Light
Indicates power to the
control board.
Status Light
Will be lit anytime there is
a call for heat.
Combustion Blower
Light
Indicates Power to
combustion blower
F e e d M o t o r L i g h t
Indicates Power to the
feed motor.
Max Temp dial
The “Max Temp Dial” is used to set the desired
maximum operating temperature of the boiler.
7 Blinks: Boiler water over heat safety shut down. This
requires 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.
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.
Overheat Safety Zone
Light
Indicates elevated boiler
water temperature. Power
flowing to Overheat circuit.
Igniter Light
Indicates power to the
igniter
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.
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 for more details.
Diagnostic Port
For diagnostic purposes
only. Requires special
DDM monitor supplied
to trained technicians
exclusively.
Operation