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Troubleshooting (continued)
Display
Code
Message
F04
F04
UNAUTH.
STOP
(end)
F08
F08 NO
CONFIG
Description
No motor motion was
detected when the
operator was attempting
to move the motor.
(2200 ONLY - Brake)
No motor motion was
detected when the
operator was attempting
to move the motor. May
be set in conjunction with
F10/F11/F12/F13.
Configuration was not
found or was reset to
factory setting
Possible Causes Diagnosis
Worn motor brushes Motor DC resistance
should be less than 3
ohms. If it is greater
than 3 ohms, the
brushes may fail to
maintain contact
with the commutator
internal to the motor.
Powerhead main
Measure DC voltage
board motor drive
across motor terminals
fault
at main board. In idle
state, voltage should
be 0.
Activate door operator
with open/close.
Voltage may vary over
a wide range, from
several volts up to
about 40 volts DC.
Encoder wiring fault
Inspect encoder cable
for disconnection, bad
connection, cut cable,
etc.
Encoder fault or
Go to limit learn
encoder interface
process. Number
fault
displayed while in door
limit learn mode is the
encoder position.
Jog door several
inches in either
direction and release
button. Number
displayed should
change.
Make sure to cancel
changes or set limit
again when finished.
Motor drive fault
Check for other fault
occurred
codes
Brake stuck closed
Brake stuck closed
Wiring fault
Check for open
circuit or short circuit.
Disconnect harness
from main board and
run continuity test.
New operator is not
If the operator is new,
configured.
the configuration is
initially unset.
Operator was
If the operator is
factory reset from
factory reset, the
the menu
configuration will be
unset.
67
Resolution
Replace motor
Replace motor brushes
(extended duty models
only)
If voltage is absent during
activation, check for other
fault codes and correct as
necessary. If no other fault
codes are present, power
cycle the operator and try
again.
If fault persists, reset
settings to factory defaults
and reconfigure the
operators.
If fault still persists,
replace main board.
Correct any issues found
with encoder wiring
If encoder position does
not change with door
movement, the encoder,
encoder wiring, and
powerhead main board are
suspect. Check all three
for any visible damage.
Attempt power cycling and
restoring factory defaults.
Replace or repair
suspected faulty
components.
Review other fault codes
and perform problem
resolution as necessary.
Connect Wire harness to
main.
If wiring fault is found,
replace.
Configure the operator per
the normal process.
Configure the operator per
the normal process.
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