Harman Super Magnum Coal Stoker - Circuit Board and Control Panel

20
Super-Magnum Coal Stoker Stove
Do Not Burn Wet Coal! 3-90-02702R8_11/13
Status Light Error Messages
3-Blinks: IndicatesthattheESPhasgoneoutofrangetoo
manytimes.Couldbeanindicatorofbuildupofash,etc.
intheuepipeorheatexchange.PerformaManualReset.
4-Blinks: Indicates that the room sensor circuit is not
complete. May mean a poor connection or short in the
sensorwire.(Willonlyoccurin"RoomTemp"mode.)
Manual Reset: Turn the mode selector to "OFF", and
disconnectpowerforasecond.Restorepowerandreturn
to original setting.
Circuit Board Dipswitches: Onthefaceofthecircuitboard,
there is a block of 8 switches.These"ON-OFF" switches
areusedtosetthetimesandtemperaturesforthedifferent
modelsofstove.Forthismodel,switchesnumbered5,7and
8shouldbeon,withtherestofthemoff.NEVER ADJUST
THESE SWITCHES YOURSELF, AS SERIOUS ISSUES
COULD DEVELOP.Also know that if there is a need to
replace an ESP probe, a switch
change may also be needed. It
isstronglyrecommendedtohave
a trained service representative
makeanyrepairstotheappliance.
2. Circuit Board
Asstatedpreviously,thecircuitboardisamicroprocessor,whichmeansithastheabilityto"think"andadjustitselfbased
onbothreportedtemperaturesanddemandtemperature.Thecircuitboardalsohastheabilitytoself-diagnosewhenthings
arenothappeningastheyshouldbe.
Feed adjuster
Sets the maximum feed
rate
Test
Runs all motors at full speed
for one minute to check
operation. After two minutes
the stove will go to minimum
burn and the blowers will
alternate from high to low
every minute to remind you
that you are still in "Test
Mode".
Distribution Blower speed
adjustment range.
L = low
H = high
Variable speed anywhere
between L and H; although
as the stove temp. goes up,
so does the low end of the
scale.
Temperature Dial;
Allows you to adjust the
room temperature in Room
Temp Mode using the outer
scale marked in degrees
Fahrenheit. It also allows
you to adjust the stove
temperature while in Stove
Temp Mode using the inner
scale marked from 1 to 7.
Mode Selector
Allows you to choose
between Room Temp Mode,
Stove Temp Mode, or OFF.
Also allows you to vary the
distribution blower speed by
turning the knob to the high
or low side of each mode.
Power Light
Indicates power to the
control.
Indicates power to the feed
motor.
Indicates power to the
combustion blower
Status Light
Will be lit in either stove
or room temp mode when
pointer is not within off
position band except after
normal shut down. Blinks to
indicate errors listed below.
Indicates power to the
distribution blower.
Dealer Diagnostic Port
For dealer maintenance only. Requires special DDM
monitor supplied to Harman® Dealers exclusively.