Chapter 8 Sequence of operations for the heat pump configuration
62 CNT-SVX12C-EN
The controller compares the fan-run time to Maintenance Required Timer
Setpoint. Once the setpoint is reached, the controller generates a Mainte-
nance Required diagnostic. When the diagnostic is cleared, the controller
resets the filter-maintenance timer to zero, and the timer begins accumu-
lating fan-run time again.
Fan off delay
The fan stays on for an additional 30 seconds (adjustable with the Rover
service tool) to allow the residual cooling or heating energy to be circu-
lated through the system.
Fan status
The controller monitors fan status to protect equipment from overheat-
ing. If fan or airflow is not detected for 30 seconds when needed, the
equipment shuts down.
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