5.TROUBLESHOOTING B-70315EN/02
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5.3.10 Inverter Alarm Display
(1) Cause of alarm
When an inverter alarm is issued, a message as shown below appears
on the digital panel of the inverter. The causes of the inverter alarms
are listed below.
Display : Exx
.z
Exx
: Cause of alarm (Message)
z
: Status of inverter at alarm occurred
Causes of inverter alarms (Model : SJH300)
Message Contents Cause
E01
Overcurrent (during turbo blower
constant-speed operation)
E02
Overcurrent (during turbo blower
deceleration)
E03
Overcurrent (during turbo blower
acceleration)
E04 Overcurrent (others)
Turbo blower rotor locked
Motor short-circuited or
ground-fault
Abrupt acceleration or abrupt
deceleration
E05
Inverter overload (overload
operation)
E06
Damping resistor overload
protection
Invalid inverter setting
Turbo blower faulty
E07 Overvoltage protection
E08 EEPROM error
(NOTE)
Inverter faulty
E09 Insufficient voltage (voltage drop) Supply voltage drop
E10 CT error
E11 CPU error
E12 External trip
E13 USP error
Inverter faulty
E14 Ground protection
Turbo blower or wiring
ground-fault
E15
Overvoltage protection in receiving
power (supply voltage increase)
Increased supply voltage
E16
Protection against instantaneous
power failure
Momentary loss of supply
voltage
E21
Temperature increase (supply
voltage increase)
E23 Gate array error
E24 Protection against missing phase
E30 IGBT error
E35 Thermistor error
E36 Abnormal brake
E60 to 69 Option 1 error 1 to 9
E70 to 79 Option 2 error 1 to 9
Inverter faulty
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Standby state because of voltage
shortage
Not powered.
NOTE
If E8 (EEPROM error) occurs, check parameter
settings.