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DIAGNOSTIC CODE
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Flash(es) Flash(es)
51
55
61
SYMPTOM
Terminal 1+2 for wall control is short-
ened longer than 4 seconds
Low voltage
Maximum radio memory has been
reached.
SOLUTION
Check wiring for push button if button is stuck and activated permanently. Remove
wiring from terminal 1+2 on operator as test. Do not run push button wires next to high
voltage wiring or in same conduit.
The operator has been shut off due to lower voltage supplied than allowed.
If an external backup battery pack is installed, check if empty. If mains supply is used,
check wiring and supply.
Maximum capacity for storage of remote controls has been reached. The first remote
control or more previously programmed remote controls’ codes have been replaced by
a new one. To reset diagnostic remove power from the operator.
Optional Accessories
1. TX2EV - 2-channel remote control
2. TX4EV - 4-channel remote control
3. TX4UNI - Universal remote control
4. 128EV - Wireless Wall Control 2-Channel
5. 747EV - Keypad
6. 828EV - Gateway LiftMaster
7. 829EV - Garage Door Monitor
8. EQL01EV - Quick release
9. 1702EV - Quick release
10. 75EV - Wired push button
11. 78EV - Wired multi-functional wall control
12. FLA-1LED - Flashing light
13. 770EV - Photocells
14. 100034 - Key switch (flush mount)
15. 100041 - Key switch (surface mount)
16. 16200LM - Door in Door contact
17. CM475EV - Batterypack
34
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