Maxi MWHE20 - Page 44

TROUBLE SHOOTING
7-2
Quick reference table of alarm codes
Alarm code Name Refer to
OC1
Over current protection
P.7-8 OC2
OC3
OU1
Over voltage protection
P.7-9 OU2
OU3
LU
Under voltage protection
P.7-10
L in
Input phase loss protection
P.7-11
OPL
Output phase loss protection
P.7-11
OH1
Overheat protection for heat sink
P.7-11
OH2
External alarm input
P.7-12
OH4
PTC thermistor for motor protection
P.7-12
dbH
Overheat protection for braking resistor
P.7-13
OL1
Electronic thermal overload relay
P.7-14
OLU
Overload protection
P.7-14
Er1
Memory error
P.7-15
Er2
Remote keypad communications error
P.7-15
Er3
CPU error
P.7-16
Er6
Operation protection
P.7-16
Er8
RS485 communications error
P.7-16
ErF
Data save error during under voltage
P.7-17