First let me first thank you for showing the control board replacement process in detail. The Fujitsu instruction video is about 6 minutes long and leaves out all the harness gymnastics. I can't believe this video has over 300 views and no one has left a thank you comment. I'm about to replace my controller board because the 36RLXFZ cools just fine but won't go into heat mode (and no error codes at all). When I start in cool mode and force the RV to switch by applying 220v to the solenoid it heats just fine so something on the control board must be shot (that's my hope anyway). Thanks again for giving us all some courage. p.s. I was a little surprised you changed the Active Filter board as a matter of course, I guess that's recommended, or did it show some excessive heat?
First let me first thank you for showing the control board replacement process in detail. The Fujitsu instruction video is about 6 minutes long and leaves out all the harness gymnastics. I can't believe this video has over 300 views and no one has left a thank you comment. I'm about to replace my controller board because the 36RLXFZ cools just fine but won't go into heat mode (and no error codes at all). When I start in cool mode and force the RV to switch by applying 220v to the solenoid it heats just fine so something on the control board must be shot (that's my hope anyway). Thanks again for giving us all some courage. p.s. I was a little surprised you changed the Active Filter board as a matter of course, I guess that's recommended, or did it show some excessive heat?