Home Improvement Questions? Ask a Handyman for Answers
Hello, this is one of the most complex and difficult to diagnose error codes to determine and repair.
If you want to tackle this yourself I need to know a lot about your electronics skill sets and experience with this type of equipment.
We can go from there.
Hello again, those controls are complex enough that only about 2 HVAC techs in 10 would be able sort the problem out efficiently... the other 8 could not. The odds that you can get lucky and attain an effective fix are in the 1 in several hundred range.
The odds that you can hurt yourself of the unit by trying are in the 50% range.
You can however try tracing the wires and looking for bad connections, and then replug all of the connections in the unit (with the power off) that would burnish them all, its safe and you would have about a 10% chance that this would fix the problem.