ALLIANCE SCL020WT - Page 87

Continued from
previous page
(H)
Supply 3: Is there
12VDC between H4-6
and H4-4?
(H)
Supply 4: Is there
12VDC between H4-6
and H4-4?
Yes
Replace AP2.
No
Run a test cycle.
Check the voltage on
each signal on AP4a.
Yes
Replace AP2.
No
(J)
Supply 1: Is there
12VDC between H1-6
and H1-2?
(J)
Supply 2: Is there
12VDC between H1-6
and H1-3?
Yes
Verify connections
and wiring between
AP2 header H4 and
AP4a header H1 are
good.
No
(J)
Supply 3: Is there
12VDC between H1-6
and H1-4?
Yes
Verify connections
and wiring between
AP2 header H4 and
AP4a header H1 are
good.
No
(J)
Supply 4: Is there
12VDC between H1-6
and H1-5?
Yes
Verify connections
and wiring between
AP2 header H4 and
AP4a header H1 are
good.
No
Run a test cycle.
Check the voltage on
each signal AP4a.
Yes
Verify connections
and wiring between
AP2 header H4 and
AP4a header H1 are
good.
No
(K)
Supply 1: Is there
12VDC between H2-9
and H2-1?
Continued on 2 of 2.
Yes
Replace AP4a
No
Troubleshooting
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87 Part No. F8677701EN