Ashby-MF Insert
37
Diagnostic Features of the Control Board
The #2 LED, #3 LED and #4 LED lights on the LED Light bar will flash to give a diagnostic
code to help in diagnosing problems that may occur.
(Read Frequently Asked Questions for more
information)
These conditions fall into 2 categories:
a.
Heat related issues.
b.
Vacuum related issues.
The Diagnostic Lights flash as follows:
1.
The
Proof of Fire
switch. This switch will sense the temperature of the Exhaust rising
during start up. If the Exhaust temperature does not reach 110 degrees F, or if, during use,
the temperature drops below 110 degrees F, the Insert will go into
“Internal Alarm”
and
the Auger will quit feeding fuel. Once the Insert completes the safety shutdown, the #3
LED will start blinking.
(Read Frequently Asked Questions for more information))
2.
The
High Limit
switch. This sensor will sense if the unit reaches temperatures that are
too high for normal operation. If this happens the Auger will quit feeding and the #4 LED
light will start blinking.
(Read Frequently Asked Questions for more information)
3.
The
Vacuum
switch. For the Insert to operate correctly the firebox needs to be sealed.
During the first 30 seconds after the unit has been turned on, the control board will check
to see if the switch senses negative pressure (Vacuum) in the firebox of the Insert. If there
is no negative pressure, the Insert will go into “Safety shutdown” and the #2 LED will
start blinking.
(Read Frequently Asked Questions for more information)
During “Normal Operation” a 60 second delay has been incorporated before the unit
shuts down when the board senses loss of vacuum. This is to accommodate opening the
doors during maintenance. Once the board senses loss of vacuum the ON/OFF light will
start blinking for the entire 60 second delay. While the light is blinking the control board
will not respond to any of the buttons.
“Internal Alarm” -
When the control board becomes unresponsive, the control board is in
Internal Alarm. The control board has sensed one of the Safety sensors. This may cause the unit
to go out. In some cases, after waiting approximately 45 seconds the Insert will start responding
to the control board again. Many times, the cause of this is a change in the vacuum inside the
firebox. This may be caused by excessive wind or by opening the Firebox door. The control
board will monitor the vacuum switch and resume normal operation if the vacuum returns to
normal.
