L1- Compressor Phase Current Overcurrent Protection; L2- Compressor Lost Step Protection - Toyotomi KURO Mini Service Manual

L1- Compressor Phase current overcurrent protection

L2- Compressor Lost step protection

Error phenomenon
Explanation of error
Frequent
problematic part
Inspection procedure
and key points
Error code
LED light signal of
external panel
Cause: ODU PCB board broken, voltage too low or too high, or
suddenly change of voltage, connecting wire is broken,
compressor issue
Connecting wire, external main control panel, compressor
1. Check the ODU PCB board if there is any broken;
2. Check whether the connecting wire is broken;
3. Check whether the compressor terminal line is connected
wrongly; whether the compressor is blocked, Whether the system
pressure is too high;
4. Opposite the compressor and reservoir connection (180°),
tapping with a rubber hammer
After check mentioned 4 steps, if the L1 or L2 error is still occur,
pls check as the guidence of Error code "F1", or change
compressor
L1
L2
LED1
LED2
LED3
Flash
Flash
Light