Most if not all of our wired remote controllers have something called a CUSTOM CODE which in technical terms sets a frequency on the remote controller to communicate to the indoor unit on. Provided that the indoor unit is set to the same CUSTOM CODE, the two will be able to communicate with no problems. In layman’s terms, the CUSTOM CODE is a language and both the indoor and remote need to be set to the same language to ‘talk’ to each other.
The reason why I am pointing this out is that the field teams have went to a few jobs lately and the CUSTOM CODE has been set on the remote by accident and was not communicating with the indoor unit. Even if the batteries are replaced and the ACL button is pushed, the CUSTOM CODE will stay set on the setting that was made and will not default back to A. Changing the CUSTOM CODE can happen quite easily on the new remotes and an example of this is if the remote is stuck down the side of the lounge and the MODE button is pushed for more than 5 seconds, the remote will now be in the CUSTOM CODE setting. For those that are familiar with the older type of remotes (AR-DL series) the CUSTOM CODE was a slide button which when dropped, often changed the CUSTOM CODE to something other than the default setting of A.
If you do get a consumer that has changed the batteries and reset the remote controller through ACL, please check the CUSTOM CODE.
Example or AR-DL series remote. The CUSTOM CODE is underneath the slide down door.
The CUSTOM CODES are
A
B
C
D
The reason primarily why you would use the CUSTOM CODE (default is the A setting) is if you had multiple units in one room and didn’t want one controller to operate all units at once, you would set a different CUSTOM CODE per indoor and match the remote to suit the indoor, see below:
Depending on the indoor unit, the way to set the CUSTOM code will differ.
J Series example
KMCA CUSTOM CODE
