My thermostat was 16 degrees off before I reset it, and only 10 degrees off after I reset it. I made very careful measurements so I know that it did make things better. I still ended up putting a remote sensor on my front unit. Now it is within 2 degrees of spec. Nobody knows what memory settings beyond temp settings are modifiable in the EEPROM. The thermistor resistance is converted to pulses by an oscillator chip, which are read by the microprocessor. As a programmer in professional life, it is reasonable to believe there is at least one value that can be set in the EEPROM to determine how pulses are interpreted by the microprocessor. a 6-degree improvement in performance due to resetting indicates that something related to temperature interpretation was reset.
Please refrain from being insulting to me. A lot of folks can do what I put in this posting. Paying a tech to do an hour of work to do the above sure beats the heck out of paying $600-$800 for a new thermostat and boards, and then paying somebody $125/hr to put it in. That is assuming that it even works. The new 12-button thermostats don't work with CC1/CC2-era heat pumps -- another bad design move by Dometic.
I know a trained dometic service person, who agrees that Dometic's designs have problems, and that their support stinks. That being the case, it is up to us to fix our own equipment and not end up spending a ton of money being stuck in their pricey upgrade racket. Power to the people!
