mp-5

[mbx]

I have tk sb-3 sr+ with mp-5 that have big dark spot on the display. Anyway I also have new MP-4 that looks awfully similar laying around, so I`m wondering if I can use it as a replacement. Thanks :confused:

[mbx]

Well just wanna make update, it works, it has code 80 that can't be cleared, but everything else works just fine.

[IRMechanik]

did the micro come out a sb-iiis sr? Code 80 is compressor temperature sensor, to my knowledge only used in screw units. Someone please correct me if i'm wrong but I think you need a different chip. On the up VI you could program unit type (screw) through guarded access but not on the up IV.