Use the status board to optimize unit performance. For example, if you observe a rapid cycling of the Heater and Cool Solenoid indicators, the unit is operating with a process inefficiency; see the Troubleshooting chapter for more information.
What follows is a description of system status board indicators.
Status Indicator Lights
Pump Reverse Indicator Light
The Pump Reverse indicator light illuminates when the unit pump runs in reverse.
Pump Forward Indicator Light
The Pump Forward indicator light illuminates when the unit pump runs in the normal forward direction. This indicator typically illuminates continuously during normal operation.
Heater On Indicator Light
The Heater On indicator illuminates when the heater energizes. This indicator illuminates intermittently when the controller energizes and
Cool Solenoid Indicator Light
The Cool Solenoid indicator illuminates when the cooling solenoid energizes. This indicator illuminates intermittently as the controller energizes the cooling solenoid; it is used only on the optional heat exchanger.
Vent Solenoid Indicator Light
If the Autovent option is present. The Vent Solenoid indicator illuminates when the venting solenoid energizes during venting sequences.
Mode Indicator Lights
Select the unit operating mode by using the selection switch.
Power On Mode Indicator Light
The Power On mode indicator light illuminates to indicate that the control circuit is energized in the unit.
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