Coromaster 2000 Garage Door Opener Manual
Had this problem with my garage door opening at random times. Figured it was the external fixed code receiver, so I replaced everything with rolling code receivers, with matching transmitters obviously.
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So big was my surprise when a friend visited and my garage door opened as he was locking his car. Turns out I forgot about the integrated receiver on the garage opener. And this turned out to be a fixed code one as well.
Had no luck in getting any information from the company who installed the garage opener about disabling the receiver, and google led me to other people who had the same experience. So firstly I cut the aerial off the built-in, which limited the range of the old transmitter, but it was still triggering if I got closer to the unit. Turns out the solution was even simpler. Just put the integrated receiver into learning mode with a simple jumper (connect middle and B as per the image) and no remote will ever trigger it again.
Problem solved. Posted by at 13:57 Tagged with:,, 43 Responses to “Coromaster Mach II hack” •.
Electronically locking the motor defeats the purpose of having it in the first place. It’s an easy DIY job: 1.
Buy a rolling code receiver, eg. RX1-RC as per; 2. Buy as many matching remotes as you need, eg. TX1-RC (or TX2-RC or TX4-RC if you need to change more channels) as per; 3.
Install the receiver: tap 0V/ground and 12V from the back of the Mach II, jump common on receiver to 0V on receiver and wire NC on the receiver to the matching pin on the back of the Mach II; 4. Austin Osman Spare Earth Inferno Pdf. Run through the installation manual of the receiver to learn the remote(s) on the receiver; 5. Test, after disabling the electronic lock of course; 6. Disable the on-board receiver on the Mach II as per my article. If you need help with the wiring, give me a shout.
Press and hold the reset button on the unit for a few seconds. You’ll know it’s long enough when the motor engages, at which time you can release the reset button. It will open and close the door a few times to detect the stops. If you do not have a hard stop on the pipe (I have a big bolt through the pipe on mine) to prevent the arm from stopping as it approaches the motor, you need to press your remote or wall button the first time the arm reaches the position you want it to stop.
If you do have a hard stop on the pipe, you don’t have to do this. Once it has run through the stop detection process, the door should be closed and you might notice that the one chain is hanging a little bit low.