Mitsubishi Heavy Cassette

[Abe]

Need help with the following;

green led on wired controller switches to red
Controller displays:

E33
PROTECT STOP
I/U No 00

Any pointers please?
thank you

[nike123]

Try here: http://tinyurl.com/2cqfrb

[frank]

Sounds like it could be the compressor Abe.

Check winding resistances to earth with a Megger.

Is it an old unit?

[Abe]

Sounds like it could be the compressor Abe.

Check winding resistances to earth with a Megger.

Is it an old unit?

Its about three years old Frank, if I remember it was one of the last R22 units.