Really Wierd Garage Door Problem

[db5]

When a problem such as this involves multiple items, I consider it wise to drop back and look for either commonalities or the simplest possible cause.

Two cars, two doors, , two motors, one wall control (that works), one safety beam.

Close: Two wall controls, Two safety beams, two remotes operating different units, one a year old and the other 15 years old. Same brand - Chamberlain.

[JPG]

Pure conjecture follows:

I assume the home link 'learns' from the original remote controls.

I also assume the two remote controls are 'different' so as to only open one door.

I assume home link in each car has only been 'taught' one of the remotes signals.

I assume the two signals are 'similar' since they share the same genetics.(different switch settings?)

Being subjected to similar codes often may be confusing the receiver as to what to respond to. Activating with the wall switch resets the receiver to 'initial' response. I know that just does not make sense. Got something better?;)

If the two remotes/recievers do have code switches, make them opposite of each other. i.e. one sets only every other code switch. The second sets those not set in the first. i.e. they are 'complimentary'.

Question is, are my assumptions accurate?

[db5]

Pure conjecture follows:

I assume the home link 'learns' from the original remote controls. Ja.

I also assume the two remote controls are 'different' so as to only open one door. Ja.

I assume home link in each car has only been 'taught' one of the remotes signals. Nien. Both have two codes, for each door.

I assume the two signals are 'similar' since they share the same genetics.(different switch settings?)

Being subjected to similar codes often may be confusing the receiver as to what to respond to. Activating with the wall switch resets the receiver to 'initial' response. I know that just does not make sense. Got something better?;) Nein!

If the two remotes/recievers do have code switches, make them opposite of each other. i.e. one sets only every other code switch. The second sets those not set in the first. i.e. they are 'complimentary'. No code switches. they are programmed by the wired switch/button.

Question is, are my assumptions accurate?

Ja. Das is richt.

[JPG]

Ja. Das is richt.

And the homelink? How does it get retrained?

And what if one of the remotes is far far way?(the one associated with the wall switch)

Do I understand that whenever the wall switch is pushed the code and all that depends on the code start anew?

'Obviously' the remotes are getting retrained by something else(your neighbor got the same make/model?).

Next time it quits working, go around and determine who's door it now opens!:D