Solution:
- Power the unit down
- Locate the RTRM J4 plug and unplug it.
- Locate the Communication Board J2 plug, unplug it and plug it to the RTRM J4. If there is nothing connected to the Communication Board J2, go to next step.
- Power the unit back up.
Below are visuals for this procedure.
End
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.