L0 Troubleshooting - EAS ELECTRIC EMCH Serie Manual De Instalación Y Manual De Usuario

18.5.11 P6
P6: IPM module protection
When P6 error code occurs, specific error code (L0/L1/L2/L4/L5/L7/L8/L9) displayed on digital tube.
Specific error code for inverter module
Check for inverter
module and ensure
DC detective wire is
connected correctly
P6: IPM module
protection
1)

L0 troubleshooting

Step 1: Compressor check
Measure the resistance between each two of U, V, W terminals of the compressor, all resistance levels should be
the same and equal to 0.9~5 Ohms. (Fig. A and Fig. B)
Measure the resistance between each of U, V, W terminals of the compressor and ground (Fig. C), all the
resistance should be infinite (Fig. D), otherwise the compressor has malfunctioned and needs to be replaced.
86
L0: inverter module protection
L1: low voltage protection
L2: high voltage protection
L4: MCE error
L5: Zero speed protection
L7: Phase sequence error
L8: Frequency difference in
one second more than 15Hz
L9: Frequency difference
between the real and setting
frequency more than 15Hz
Check module and
compressor
Check power
supply of module
Check power supply
of module
Check module and
electric circuit
Check electric circuit
and compressor
Check module and
wiring connection
Check compressor
Check compressor
V.2