Esp Control - Harman Home Heating DVC-500 Installation & Operating Manual

Coal stoker
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Power Light
Indicates power is "on" to
the control.
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
Distribution Blower
Indicates power to
Combustion Blower
Indicates power to the
Feed Motor.
Indicates power to the
Draft Motor.
Temp 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.
2 Blinks: Indicates that there is insufficient negative
pressure in the firebox. This begins a shut-down process
described in more detail on Page 31.
The most common cause of the 2 blink status is leaving the
ash door open without turning the Feed Adjuster to "Ash
Out". For other causes of a 2 blink status see Page 32.
This requires a Manual Reset*.
3 Blinks: Indicates that the ESP (Exhaust Sensing Probe)
has gone out of range a specified number of times. If
the stove seems to be performing normally, perform a
Manual Reset*.
Operation

ESP CONTROL

DDM Port
Allows service technician to
attach diagnostic meter when
troubleshooting or verifying
proper operation.
Status Light Error Messages:
4 Blinks: Can occur only in Room Temp Mode and indi-
cates Room Sensing Probe has failed or is not installed.
If a Room Sensing Probe is then installed, the status light
will automatically reset.
5 Blinks: Indicates a lack of communication between the
circuit board and the TCP (Temperature Control Probe).
This requires a manual reset*.
* Manual Reset: Disconnect power cord for a few seconds
and reconnect. If error still occurs call your Dealer.
Feed Adjuster
Sets the maximum feed
rate, 1 to 5
Test
Runs all motors at
full speed for two
minutes to check
operation. After
two minutes the
feeder stops and the
distribution blower
alternates from high
to low every four
seconds to remind
you that you are still
in "Test Mode".
Ash Removal position
See page 19
Distribution Blower
speed adjustment range.
fig. 12
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.
15

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