Chamberlain JDC - Page 55

55
Troubleshooting (continued)
Code
Display
Message
Description
Possible
Causes
Diagnosis Resolution
F42
F45
F48
F42 EYE/
EDG1 MIS
F45 EYE/
EDG2 MIS
F48 EYE/
EDG3 MIS
Monitored eyes/
edges 1/2/3
learned, but no
longer detected
as present.
Certain safety
devices may
show as missing
when they are
blocked, even if
they are present
and functioning
See F41/F44/F47 errors:
safety device blocked
Ensure only safety
devices approved for
use with the operator are
used.
Correct blocked safety
device condition
Improperly
congured
photoeye input
Check system settings item
in the menu to check the
device type setting for the
input
Ensure the safety device
type matches the device
that is actually installed
Unapproved
safety device is
being used
Ensure the safety device is
approved for use with the
operator
Replace the safety
device with one that is
approved for use with the
operator
Wiring fault to
safety device
Check for LED status on
photoeye type devices.
Check wiring for short or
open circuit
Ensure wires are wired
into correct terminals and
that polarity is correct for
polarity-sensitive devices
Correct wiring faults
Damaged photo
eyes or edge
Swap safety device with
known-good device
If a known-good safety
device works, replace the
faulty safety device
Damaged
powerhead main
board
Swap safety device with
known-good device
connected directly to the
powerhead main board
If the main board still
won't detect known-
good safety devices
connected directly to the
board, power cycle the
operator.
If the problem persists,
reset to factory defaults
and congure again.
If problem still persists,
replace the powerhead
main board.
F43
F46
F49
F43 EYE/
EDG1 BLK
F46 EYE/
EDG2 BLK
F49 EYE/
EDG3 BLK
Monitored eyes/
edges 1/2/3
were blocked or
missing when
the door was
commanded to
move.
See sections for
F41/F42/F44/
F45/F47/F46 as
applicable
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