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Rev. 1.0
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Section 6: Trouble Shooting.
Refer to this section if the 212iLM Mullion is not responding correctly to the operation outlined in this
instruction manual. The 212iLM Mullion has been designed to operate with 12-24 Volts AC or DC.
Verify that the voltage powering this keypad is within these parameters.
Situation 1:
LED's are slowly cycling from right to left and the Backlighting is off.
Reason:
The 212iLM Mullion has been designed to monitor for low voltage. Once the low
voltage has been detected, the keypad shuts down some of its options like
backlighting to ensure operation of the keypad until the problem can be attended to.
Solution:
Check the output voltage of the power supply with a meter to verify the output voltage
rating listed for that device. If it is below the voltage threshold of 7.5 Volts AC or 9
Volts DC, you must increase the voltage to between 12-24 Volts.
Situation 2:
LED's are rapidly cycling from left to right and the keypad has lost all
operation.
Reason:
The 212iLM Mullion has been designed to monitor for over voltage. This is a very
"severe" condition and therefore significantly affects the keypad’s operation. Once
the over voltage has been detected, the keypad shuts down all operation and will not
operate until the voltage irregularity has been corrected.
Solution:
Check the output voltage of the power supply with a meter to verify the output voltage
rating listed for that device. If it is over the voltage threshold of 35 Volts, you must
reduce the voltage to under 29 Volts.
Situation 3:
The Master code is not allowing access to the programming mode.
Reason:
There are a few reasons that this situation could occur. The most common is that the
Master code was programmed incorrectly. That is to say that someone entered a
user code into user number one. The Master code is always kept in memory with
user number "1" and users are in positions “2” through “120”.
The other reason this could happen is that the code was simply forgotten.
Solution:
Power down the keypad, connect the white/black wire to the Red wire on the 212iLM
Mullion wire harness and power back up. The yellow LED will be flashing indicating
that the keypad is now in programming mode. Change the Master code by press 1 #
(New Master Code)
*
(Repeat Master Code)
*
*
. When finished with programming,
power down the unit, separate the white/black wire from the Red wire on the 212iLM
Mullion harness and power back up. The keypad is now ready to use.
Situation 4:
No LED's are lit on the keypad
Reason:
Power is not reaching the keypad.
Solution:
With a meter check the voltage connection at the 212iLM Mullion keypad on the Red
& Black wires. Confirm that there is actually voltage at the keypad. If there is no
voltage reading at the keypad, use the meter on the power supply to verify that
voltage is leaving the power supply. If there is no voltage coming out of the power
supply, call the manufacturer of that power supply. If there is voltage at the power
supply, but not at the keypad, use the meter to test each of the wires for a break in
the wire. You may also use a 12-Volt Battery to power the 212iLM with, in order to
verify that it is functioning.
