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  4. What if my transfer switch goes back to utility, but my standby generator keeps running?

What if my transfer switch goes back to utility, but my standby generator keeps running?

Step 1. Check for a start signal from the transfer switch
ATS MODELCOMMANDPASSFAIL
WINCOCheck continuity between Start and Bat – on switchContinuity. The generator should be runningNo continuity: Go to Step 2
ASCO165
ASCO185
Closed on Start = Continuity between terminal block 7 terminals 4 and 5Continuity: The generator should be running unless we are sure the time delays for cool down have expired. If the contact does not open after time delays replace transfer switch controllerNo continuity: Go to Step 2.
185 Switches – check QV battery

Step 2. Check if generator is in a cool down delay.
ATS MODELCOMMANDPASSFAIL
WINCO
ASCO165
ASCO185
Go to generator controller > Check to see if it is in a cool down delay. If so, wait for it to expire. Beware of stacked time delaysGenerator in a time delay: Should be running. Go to Step 3Generator not in time delay but running: Troubleshoot generator or ATS board for improper shutdown

Step 3. Adjust Time Delays to Prevent Nuisance Calls

ATS MODELCOMMAND
WINCONot applicable
ASCO165Fixed time delays. Can only adjust generator delays. Adjust the generator controller time delay to reduce stacked delays. Generator delay won’t start until transfer switch removes start signal
ASCO185Select the proper generator cool down and adjust
Switch 1 Actuator 10
On (Up) 2 Minute
Off (Down) 5 Minutes
Adjust the generator controller time delay to reduce stacked delays. Generator delay won’t start until transfer switch removes start signal
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