BCXC-SVX01A-EN
57
Table M-D-10. DX or electric outputs do not energize
Probable Cause
Explanation
Unit wiring
The wiring between the controller outputs and the end devices must be present
and correct for normal operation.
Unit configuration
The controller must be properly configured based on the actual installed end
devices and application. When the unit configurationdoes not match the actual
end devices, the unit may not work correctly.
Diagnostic present
A specific list of diagnostic affects valve operation. For more information, see
the Diagnostics section.
Manual output test
The controller includes a manual output test sequence you can use to verify
output operation and associated output wiring. However, based on the
current step in the test sequence, the valve(s) may not be open. Refer to the
Manual Output Test section.
Freeze avoidance
When the fan is off with no demand for capacity (0%) and the outdoor air
temperature is below is below the freeze avoidance setpoint, the controller
disables compressors and electric heat outputs. This includes unoccupied
mode when there is no call for capacity or any other time the fan is off.
Normal operation
The controller energizes the outputs only as needed to meet the unit capacity
requirements.
Maintenance
Diagnostics
