Trane Symbio 500 - Power On and Pre-Power Checks; Power On Check; Pre-power Checks

BAS-SVX090B-EN
23
Figure 8. Symbio 500 transformer
24 VAC
transformer
A pigtail connection may be neces-
sary between earth ground and/or
enclosure ground if the device is
not grounded through one leg of
the transformer wiring.
Alternative earth
ground method.
Power On Check
1. Verify that the 24 Vac connector and the chassis ground are properly wired.
2. Remove the lockout/tagout from the line voltage power to the electrical cabinet.
3. Energize the transformer to apply power to the Symbio controller.
4. Observe the Symbio controller when power is applied to verify the power check sequence:
a. The power LED lights red for 1 second.
b. The power LED lights green.
c. If the sequence completes as described, the controller is properly booted and ready for the
application code.
d. If the power LED flashes red, a fault condition exists.
Inputs/Outputs
Pre-power Checks
Before connecting any inputs/outputs to the Symbio 500 controller, perform the following pre-power
checks.
Wiring