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AM Series Cascade Sequencer User Manual
Page
26
of
28
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0101_0D
04/29/2016
Ph.: 800-526-0288
GF-146-CS
Cascade Sequencer Troubleshooting Guide
ISSUE
CORRECTIVE ACTION
Cascade Sequencer screen
flashes on and off rapidly.
Ensure the S4 switch on the Communications Module is ON (to the
left).
Cascade Sequencer screen does
not light up.
•
Ensure the wires are connected to both the Sequencer and
terminals 16 & 17 of the boiler being addressed
•
Ensure the S4 switch on the Communications Module is ON (to
the left).
Boiler address is correctly set in
each unit but the units do not
display on the Sequencer screen.
•
Ensure the daisy chain wires are correctly in place.
•
Ensure the Cascade Status Menu is being displayed on the
Sequencer.
•
Turn off all boilers. Turn boiler #1 on and wait for the Sequencer
to recognize it, up to 3 minutes. Then turn boiler #2 on and wait for
the Sequencer to recognize it, up to 3 minutes. Continue for all
units present.
Dependent boiler seems to be
operating independently.
Verify that the unit is still present on the communication chain by
looking at the Sequencer's Cascade Status menu.
Cascade Sequencer screen does
not match actual boiler operation.
•
Ensure the Cascade Status menu is being displayed on the
Sequencer.
•
Wait 40 seconds and re-check. The communication protocol used
may take up to 40 seconds to update current unit status.