Step 1. Verify Generator Will Start and Run Manually
| ATS MODEL | COMMAND | PASS | FAIL |
|---|---|---|---|
| WINCO ASCO165 ASCO185 | Controller > manual mode > start command | Generator starts & runs: go to step 2 | Generator does start & run: repair symptom(s) |
Step 2. Put Generator In Auto Mode
| ATS MODEL | COMMAND | PASS | FAIL |
|---|---|---|---|
| WINCO ASCO165 ASCO185 | Generator in Auto Mode > Jump Auto Start contacts to start in Auto Mode | Generator starts & runs: Go to Step 3 | Generator does start & run: Repair symptom(s) |
Step 3. Give Start Command From Transfer Switch
| ATS MODEL | COMMAND | PASS | FAIL |
|---|---|---|---|
| WINCO | Flip toggle switch to start on the front pane | Generator starts & runs | Generator does not start & run: Troubleshoot the start switch continuity |
| ASCO165 | Press & hold the push to test button until the generator cranks & starts | Generator starts & runs | Generator does not start & run: Go to Step 4 |
| ASCO185 | Press & hold the transfer test button for at least 15 seconds | Generator starts & runs | Generator does not start & run: Go to Step 4 |
Step 4. Start Command At Transfer Switch Fails
| ATS MODEL | COMMAND | PASS | FAIL |
|---|---|---|---|
| WINCO | Manually bypass the switch start command & verify generator starts > Jump the Start Signal (#23) & Battery Negative (#1) terminals on the switch | Generator starts & runs: Go to Step 5 | Generator does not start & run: Troubleshoot generator start circuit. Problem is in wiring between ATS and generator start contacts |
| ASCO165 2-Wire Switch | Manually send the start signal to the generator > Apply jumper to generator. Hold jumper for at least 20 seconds. Closed on start Jump Terminal Block 7 terminals 4 and 5. Open on start (not used w/Winco products) Terminal Block 7 terminals 5 and | Generator starts and runs: Go to Step 5 | Generator does not start and run: Troubleshoot generator start circuit. Problem is in wiring between the ATS and generator start contacts |
| ASCO165 4-Wire Switch | Got to Step 5 | ||
| ASCO185 | Manually send start signal to generator > Apply jumper to generator. Hold jumper for at least 20 seconds. Closed on start Jump Terminal Block 7 terminals 4 and 5 | Generator starts and runs: Go to Step 5 | Generator does not start and run: Troubleshoot generator start circuit. Problem is in wiring between the ATS and generator start contacts |
Step 5. Simulate Power Failure
| ATS MODEL | COMMAND | PASS | FAIL |
|---|---|---|---|
| WINCO | Interrupt utility power to the transfer switch with the main switch in the Automatic position > ice cube relay should switch. You should open continuity between Start and Bat – terminals | Proper continuity between Start & Battery – terminals | Open continuity: Troubleshoot switch & relay wiring & function. Reset when finished |
| ASCO165 2-Wire Switch | Interrupt utility power to the transfer switch > start contact closed. Closed on Start = Continuity between terminal block 7 terminals 4 and 5 Open on start (not used w/Winco products) = No Continuity between Terminal Block 7 terminals 5 and 6 | Proper continuity, generator starts and runs: Go to Step 6 | Open continuity. If contact does not close when the utility available light goes out replace the ATS control board |
| ASCO165 4-Wire Switch | PART 1: Verify Voltages > Check voltage between Terminal Block 7 terminals 2(-) and terminals 3, 5 and 8 down. PART 2: Verify Crank and Run Signal > Interrupt utility/reset switch errors. Should have continuity between Terminal Block 7 terminals 7 and 8. Crank cycle is 10 seconds on/10 seconds off for three attempts. Should have continuity between Terminal Block 7 terminals 7 and 8. | Part 1: 12-15VDC: Continue to Part 2 PART 2: Generator starts and runs: Go to Step 6. | PART 1: Not VDC: Check generator battery, fuses and connections between switch and generator Part 2: No Run Signal and/or No Crank Signal: Replace ATS board. |
| ASCO185 | Interrupt utility power to the transfer switch > this should close start contact Closed on Start = Continuity between terminal block 7 terminals 4 and 5 Open on start (not used w/Winco products) = No Continuity between Terminal Block 7 terminals 5 and 6 | Proper continuity, generator starts and runs. Go to Step 6 | Open continuity. If contact does not close when the utility available light goes out replace the ATS control board |
Step 6. Reset System
| ATS MODEL | COMMAND |
|---|---|
| WINCO ASCO165 ASCO185 | Place transfer switch and generator in Auto Mode |