Receiver unit weak signal
See if anything here helps.
Limited range of your remote controls
could be related to radio frequency interference that comes from
something in your home or in the surrounding environment. Certain
electrical devices can radiate interference; this could be almost
anything that is plugged into an electrical outlet.
Please keep in mind that the device can
be brand new, or can be an item that has been in use for quite a
while. Also, the item may continue to function properly as far as
you are able to tell. The only problem with the item may be that it
has started to broadcast the interference, with no other symptoms
noted.
Some devices are more likely to
generate interference than others. This includes TV cable, cable
amplifiers, surge protectors, fluorescent lights, battery charging
devices (power tools, golf carts, etc.), anything that utilizes a
timer (sprinkler systems, lights, alarm systems, etc.), and a myriad
of others. If the problem seems sporadic, we can safely assume that
the device responsible for the interference is only being operated
during these times. Again, please keep in mind that the age of the
device does not determine if it is capable of broadcasting unwanted
interference. Any electrical device can be the source of the problem.
The first step is replacing the battery
in your remote. If the range on your remote does not improve, remove
the wall control wires from the overhead unit. If the range does not
improve you will likely need to replace the remote control. After
replacing the remote, or if you have other remotes programmed in to
the opener, and the range problem still exists, please proceed to the
Power Down test.
Multiple garage doors:
If you have two garage door units and
one is working just fine, you will need to start by unplugging the
good unit. This will help determine if the unit with no range starts
to function properly. If the range comes back to the bad unit then
you will need to replace the logic board on the unit that was
unplugged as it is emitting an RF signal that is over powering the
other garage door opener. If the range doesn not improve after the
“good” unit has been unplugged, replace the batteries and try
programming some additional remotes to determine if the existing
remotes are the issue. If the extra remotes do not have any range
then you would need to replace the receiver logic board in the “bad”
unit.
Power Down test:
To isolate potential sources of
interference, turn the circuit breaker off to the garage and plug the
garage door opener into an extension cord from another room. If the
range improves, then the interference is coming from a device in the
garage. If no improvement is seen follow the same procedure, this
time turning off the circuit breakers to your home, with the
exception of the garage and test the remote controls. If improvement
is noted, turn the circuit breakers back on, one by one, until the
range problem resurfaces. This will allow you to narrow down what
room the problem device is in. You will have to go from there to
isolate it further, by unplugging and re-plugging the items in that
room.
If you are unable to determine any
source of interference, then the receiver logic board in the overhead
unit will need to be replaced.
