Tomorrow i will be looking into a fault code on a mitsubishi city multi r407c
PURY-P400 YEM-A


Another engineer told me he has phoned mitsubishi and they did not know the fault code.

On the remote control the fault code is


1143 is fault code ???????
oc is outdoor condensor
100 is ?????????

The code only appears on 1 control and when the system is reset reappears a few days later on another.

can anyone help thanks robin