Quote Originally Posted by Frozen P View Post
Ok, I cleaned all the codes except the 74 code. This code means: "µP reverted to Default Settings, Unit has reset, control temp. may be inaccurate, repair before loading". The fridge is ready to start and run, but the code doesn't disappear. why does this code set? How could I clean it?

thanks to you to be patient
Sounds like you performed cold start or flashload, when doing this this causes the micro prom to revert to a default setting, which is the instructions that are preprogrammed on the chip, you will have to program the unit and calibrate the sensors possibly shunt calibration, then whil you are in super guarded access you may also push the code key to see the alarm 74 then press clear.

Depending on models you may have to program the following for example:

electric stby
ETV or no etv
screw or no screw comp
spectrum no spectum
yanmar engine or isuzu engine
internal logger no internal logger which is in a embedded screen in super guarde access
programmed optiset or default opti again embedded acces

there are many configs and programmings specific to unit model .

Oh crap this post is older than sh*t. you probably know all of this now.

Regards R-T