I.B. ATS-AG03
Page 22
Effective 7/00
6.2.1 TRANSFER SWITCH APPEARS INOPERATIVE
(Display is blank)
Step 1: Verify that all plugs and sockets are properly
interconnected
Step 2: Verify correct system voltage at the line side of
the NORMAL switching device. See figure 1 for typical
location.
Yes: See Step 3.
No: Troubleshoot upstream of ATS and
repair circuit. Possible problems may be an
open breaker or disconnect with, fuse or utility
is not supplying power to site.
Step 3: Verify correct system voltage at plug J2 on the
controller.
Yes: Replace controller
No: Troubleshoot wire harness from J2 on
the controller to the line side of the NORMAL
switching device.
Step 4: Is Generator running?
Yes: See Step 5.
No: See Step 7.
Step 5: Verify that there is proper system voltage and
frequency available at the line side of the
EMERGENCY switching device.
Yes: See Step 6.
No: Troubleshoot generator
Step 6: Verify correct system voltage and frequency at
plug J3 on the controller.
Yes: Change controller
No: Troubleshoot wire harness from
J3 on the controller to the line side of
the EMERGENCY switching device.
Step 7: Verify good battery voltage.
Yes: Troubleshoot wiring between TB1-
1 and J6-3 and TB1-2 and J6-2.
No: Replace battery.
6.2.2 TRANSFER SWITCH CONTINUES TO CYCLE
AND TRANSFER SWITCH WILL NOT STOP IN POSI-
TION
For Normal Position
Step 1: Disconnect Plug J1 on the Motor Break Board
located next to the motor mechanism.
Step 2: Using the manual handle, ratchet the Transfer
Switch into the Normal position. With an ohmmeter, veri-
fy continuity between pins P1-7 and P1-8.
Yes: See step 3.
No: Check for broken wire to Auxiliary
switch. If no broken wires are found,
replace auxiliary switch.
Step 3: Verify continuity between plug J10-1 and J10-6.
Yes: Replace controller.
No: Troubleshoot wire harness
between J10-1 and J10-6 and repair.
Step 4: Repeat steps 1-3 after ratcheting to Emergency
position. Use P2-7 an dP2-8 in Step 2.
6.2.3 TRANSFER SWITCH WILL NOT AUTOMATI-
CALLY TRANSFER TO NORMAL
Step 1: See steps 1 through 3 of 6.2.1
Step 2: Verify that Option 26D is not in use.
Yes: See step 3.
No: Disable option 26D
Step 3: Verify correct system voltage and frequency at
plug J2 on the controller.
Yes: Replace Motor
No: Without separating any plugs, verify 120
VAC at J6-6
Yes: Troubleshoot wire harness from
J6 to J71
No: Verify continuity between TB1-21
and the neutral assembly and repair if
required.
No: Verify correct voltage and frequency
available at line side of NORMAL switching
device. Troubleshoot wire harness from J2 on
the controller to the line side of the NORMAL
switching device if required.
6.2.4 TRANSFER SWITCH WILL NOT AUTOMATI-
CALLY TRANSFER TO EMERGENCY
Step 1: Is Generator running?
Yes: See Step 2.
No: See Step 4.
Step 2: Verify that there is proper system voltage and
frequency available at the line side of the
EMERGENCY switching device.
Yes: See Step 3.
No: Troubleshoot generator.
Step 3: Verify correct system voltage and frequency at
plug J3 on the controller.
