R410A All DC Inverter Mini VRF MCAC-VTSM-2014-09
88 Troubleshooting
P6: Module protection
P6 code can display on digital tube automatically. L0~L9 these error codes will display on digital
tube only through check button. L0~L9 is only display on the 10.5kW but not on 12~16kW
L1: low voltage protection
L4: MCE error
L2: high voltage protection
L8: frequency difference
in one second more than
15Hz
L9: frequency difference
between the real and the
setting frequency more
than 15Hz
L0: module protection
L5: Zero speed protection
L7: Phase sequence
error
P6 will disappear in one
minute. Then press the
check button to find the
specific error code when P6
disappears.
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
