Josie, Author at WINCO | Page 6 of 28

What should I do if my transfer switch exercise is not working?

Step 1. Verify Exerciser is Set

ATS MODEL	COMMAND	PASS	FAIL
WINCO	Review programming	Set	Not Set: Set program
ASCO165	Check exercise light to see if it is blinking for the approximate number of days until test	Light is blinking	Light is not blinking
ASCO185	Check exercise light to see if it is on	Exercise light is on	Exercise light is off: Set exerciser

Step 2. Verify Exerciser

ATS MODEL	COMMAND	PASS	FAIL
WINCO	Set exerciser to set in near future. Verify 120V to the relay is present. Record hours or starts (if equipped) Return after test interval to verify	Generator running in test cycles	Generator has not tested
ASCO165	This switch will automatically set it to exercise in 14 days. It is a long process. Record hours or starts (if equipped) Return after test interval to verify	Generator running in test cycles	Generator has not tested
ASCO185	Set exerciser Record hours or starts (if equipped) Return after test interval to verify	When you start the exerciser, the generator automatically goes into test mode.	Generator has not tested

Step 3. Exerciser doesn’t transfer load to generator

ATS MODEL	COMMAND	PASS	FAIL
WINCO ASCO165	Not applicable
ASCO185	Verify board setting	Dip Switch S1 actuator 8 is in the up position. If load still does not transfer start Will not Transfer troubleshooting steps using the exercise under load circuit	Set dip switch and retest

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 MODEL	COMMAND	PASS	FAIL
WINCO	Check continuity between Start and Bat – on switch	Continuity. The generator should be running	No continuity: Go to Step 2
ASCO165 ASCO185	Closed on Start = Continuity between terminal block 7 terminals 4 and 5	Continuity: 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 controller	No continuity: Go to Step 2. 185 Switches – check QV battery

Step 2. Check if generator is in a cool down delay.

ATS MODEL	COMMAND	PASS	FAIL
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 delays	Generator in a time delay: Should be running. Go to Step 3	Generator not in time delay but running: Troubleshoot generator or ATS board for improper shutdown

Step 3. Adjust Time Delays to Prevent Nuisance Calls

ATS MODEL	COMMAND
WINCO	Not applicable
ASCO165	Fixed 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
ASCO185	Select 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

What if my transfer switch won’t transfer?

Step 1. Check For Time Delays

ATS MODEL	COMMAND	PASS	FAIL
WINCO	Not applicable: Go to Step 2.
ASCO165 ASCO185	Press the Push to Test button to bypass the delays	Switch transfers to the next source. Note: ASCO switches will not transfer to a dead source	The switch does not transfer after time delays are bypassed

Step 2. Does the Switch Work Manually

ATS MODEL	COMMAND	PASS	FAIL
WINCO	Test with all power removed from the switch > manually press in the utility and generator contactor. Verify that both cannot be engaged together	Move Feely, contacts continuity when engaged: Go to Step 3	Contacts don’t move freely, both contacts can engage together, no continuity when engaged: Replace contactor
ASCO165 ASCO185	Test with all power removed from the switch > manually rotate handle on the left side of the contactor.	The switch transfers easily and smoothly. Go to Step 3	Switch cannot transfer or is very difficult to transfer. Replace contactor assembly

Step 3. Check Solenoid

ATS MODEL	COMMAND	PASS	FAIL
WINCO	Not applicable: Go to step 4.
ASCO165 ASCO185	Test with all power removed from switch > measure resistance of the solenoid	35-70 Ohms: Go to Step 4	Open/Out of pass range: Replace solenoid

Step 4. Check Activation Signal

ATS MODEL	COMMAND	PASS	FAIL
WINCO	Create a condition where the contactor should transfer. Monitor for AC voltage	120 VAC. Replace contactor	No Voltage/Low Voltage. Replace switch, relay, auxiliary contact or harness
ASCO165 ASCO185	Disconnect solenoid leads. Create condition where it should transfer and monitor for DC voltage	+/- 200VDC: Replace coil	No Voltage/Low Voltage: Replace Board

What if my transfer switch won’t transfer to utility and/or the utility acceptable doesn’t come on?

Step 1. Verify if Utility Available Light is On

ATS MODEL	COMMAND	PASS	FAIL
WINCO	Not applicable
ASCO165 ASCO185	Make sure utility power breaker is open	Utility available light is on: Go to ‘Will Not Transfer’ help topic troubleshooting steps	Utility available light is off. Ensure plug is tight into the board: Go to Step 2

Step 2. Verify Utility Voltage at Switch

ATS MODEL	COMMAND	PASS	FAIL
WINCO ASCO165 ASCO185	With utility power available > check L1-L2 voltage is 220-252 VAC on the primary source contactors of the transfer switch	220-252 VAC: Go to Step 3	Not 220-252 VAC: Get utility power to the transfer switch. The breaker may be off or the power is still out, wiring between utility and transfer switch

Step 3. Check Switch Harness

ATS MODEL	COMMAND	PASS	FAIL
WINCO	With utility power on > check for voltage on Utility contact A1 and N.	+/-120VAC: Replace utility contactor or coil	No Voltage: Trouble shoot harness/relay functions through the print. Once problem identified, restart test
ASCO165	Turn off generator with switch in Alternate position. Check continuity from L1 to pin 3 and 12 on Plug 1. Check continuity from L5 to pin 4 and Pin 15 on Plug 1. Ensure plug is tight on board	Harness continuity: Replace Board	Poor connection/continuity: Troubleshoot harness and repair
ASCO185	Turn off generator with switch in Alternate position. Check continuity from L1 to pin 5 and 16 on Plug 1. Check continuity from L5 to pin 4 and Pin 8 on Plug 1. Ensure plug is tight on board	Harness continuity: Go to Step 4	Poor connection/continuity: Troubleshoot harness and repair

Step 4. Check Switch Settings

ATS MODEL	COMMAND	PASS	FAIL
WINCO ASCO165	Not Applicable
ASCO185	Turn off all power in the switch. Check the following settings: Switch 1 actuator 4 = Off (Down) 60 hz Switch 2 actuator 2 = On (Up)	Match: Replace Board	No Match: Adjust switches and restart at first step

What if my standby generator doesn’t transfer and/or generator light doesn’t come on?

Step 1. Verify if Utility Available Light is On

ATS MODEL	COMMAND	PASS	FAIL
WINCO	Not applicable: Go to Step 2
ASCO165 ASCO185	Start generator	Generator running, and generator available light is on: Go to Will Not Transfer troubleshooting steps Help Topic	Generator running, and the generator available light is off. Ensure plug is tight into the board: Go to Step 2

Step 2. Verify Generator Power At Switch

ATS MODEL	COMMAND	PASS	FAIL
WINCO ASCO165 ASCO185	Generator running > check L1-L2 voltage is 220-252 VAC on the alternate/generator source contactors of transfer switch	220-252 VAC: Go to Step 3	Not 220-252 VAC: Get generator power to the transfer switch. The breaker may be off or troubleshoot generator output voltage, wiring between generator and transfer switch

Step 3. Verify Switch Harness

ATS MODEL	COMMAND	PASS	FAIL
WINCO	Generator running and utility power off > check for voltage on Generator contact A1 and A2.	+/-120VAC. Replace generator contactor or coil	No Voltage. Trouble shoot harness/relay functions through the print. Once problem identified, restart test
ASCO165	Turn off generator with switch in Preferred position. Check continuity from L2 to pin 1 and 7 on Plug 1. Check continuity from L6 to pin 6 and Pin 16 on Plug 1. Ensure plug is tight on board	Harness continuity: Replace board	Poor connection/continuity: Troubleshoot harness and repair
ASCO185	Turn off generator with switch in Preferred position. Check continuity from L2 to pin 3 and 9 on Plug 1. Check continuity from L6 to pin 6 and Pin 10 on Plug 1. Ensure plug is tight on board	Harness continuity: Go to Step 4	Poor connection/ continuity: Troubleshoot harness and repair

Step 4. Verify Switch Settings

ATS MODEL	COMMAND	PASS	FAIL
WINCO ASCO165	Not applicable
ASCO185	Turn off all power in the switch. Check the following settings: Switch 1 actuator 4 = Off (Down) 60 hz Switch 2 actuator 2 = On (Up)	Match. Replace board	No Match. Adjust switches and restart at first step