Troubleshooting guide

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CAUTION: Using the fan button in a direct vent situation more than one adjustment may
cause the Vacuum Switch alarm to shut the stove down by reducing the fan speed which in
turn reduces the vacuum in the stove. (Vacuum switch requires a minimum of .05” WC of
negative pressure)
REMEMBER: Any adjustments to the board by using the Trim buttons will be lost in the event
there is a power failure or if the unit is unplugged. The Control Board does not have a Memory
Function. Tell the customer to make a note of the final adjustment to the control board for
future reference.
Diagnostic Features
The Control Board offers a certain level of diagnostics to help in trouble shooting the stove. The
three areas that are diagnosed by sensors in the stove are:
1. Vacuum – Sensed in the Firebox and Ash pan area of the stove.
2. Minimum Heat– Proof of Fire sensed by monitoring the Exhaust Temperatures
3. Over Temp – Senses if the Firebox area gets too hot.
LED light 2 flashing - The number 2
LED light on the Heat advance bar will
flash if the control board senses a loss of
vacuum. The stove shuts down and the
Number 2 LED light starts flashing
approximately 60 seconds after a loss
of vacuum has been sensed. (Fig 11)
LED light 3 flashing - The number 3
LED light on the Heat advance bar will
flash if the control board senses a loss of
Proof of Fire. The stove shuts down and
the Number 3 LED light starts flashing
after the stove cools down and the fans
shut off. Approximately 30 minutes.
(Fig 12)
LED light 2 and 3 flashing at the same
time – This will indicate that the High
Limit Switch has tripped and shut the
unit down. Reset the High Limit Switch
before diagnosing the unit. (Fig 13)
Figure 11
Vacuum Diagnostic light
Figure 12
Proof of Fire Diagnostic light
Figure 13
Proof of Fire Diagnostic light