Troubleshooting guide
Page 11 - 11 -
Following is a description of events if either one of the switches isn’t adjusted correctly:
First Example: Switch 1 is not adjusted to close when it is on the edge of the disc.
When the unit is started, the Control Board first looks for vacuum to be detected in the
firebox (this takes approximately 60 seconds), and then it sends power through the purple
wire to the Gearmotor for 3.5 seconds. This will position the switches on the edge of the
disc as seen in figure 13. After the Control board drops out, Switch 1 should be closed
and finish the rotation, by sending power through the purple wire back to the gearmotor
until the switch drops in the notch and opens the circuit again.
If Switch 1 is not adjusted properly and the switch is not closed when positioned on the
edge of the disc, the gearmotor will stop in the position seen in figure 13.
The Control Board detects Switch 2 is Open at this point and continues to the next step.
The lights light up on the board and the unit starts feeding fuel to the burnpot.
The Control board is monitoring the circuit Switch 2 is connected to, and the circuit must
close again within 20 seconds after the switch opens. Since the switch is stuck in the open
position, the unit will go into a #4 Alarm and starts rotating the pot.
Notice the timing in Example 1:
Once the pot starts to rotate, the board detects Switch
#2 open. This takes approximately 5 seconds. Then the control board starts the pellets to
feed, this will continue for another 10 to 15 seconds. The Control Board monitors Switch
#2 and does not detect the switch closing and then goes into a #4 Alarm.
Total time
approximately 20 seconds
.
Second Example: Switch 2 is not adjusted to open when it is on the edge of the disc.
In the second example the switches
start out in the notches as seen in the
figure to the left.
During the rotation the switches ride
up on the edge of the disc and finish
by dropping back into the notches.
Figure 14
After starting the unit, the Control Board looks at the Vacuum Switch to detect vacuum in
the Firebox. After detecting vacuum the Control Board sends power through the purple
wire to the Gearmotor for 3.5 seconds. This will position the switches on the edge of the
disc as seen in figure 13. After the Control board drops out,
Switch 1 is now closed and