Chapter 5 Troubleshooting; Alarm Codes - Fuji Electric frenic-hvac Instruction Manual

Chapter 5 TROUBLESHOOTING

5.1 Alarm Codes

Code Name
OC1
OC2
OC3
Instantaneous overcurrent
OV1
OV2
OV3
Overvoltage
LV
Undervoltage
Lin
Input phase loss
OPL
Output phase loss
OH1
Heat sink overheat
OH2
External alarm
OH3
Inverter internal overheat
OH4
Motor protection (PTC thermistor)
OL1
Overload of motor 1
OLV
Inverter overload
Er1
Memory error
Er2
Keypad communications error
Er3
CPU error
Er4
Option communications error
Er5
Option error
Er6
Operation protection
Er7
Tuning error
Er8
ErP RS-485 communications error (COM port 1)
RS-485 communications error (COM port 2)
ErF
Data saving error during undervoltage
ErH
Hardware error
PV1
PV2
PVA
PVb
PID feedback error
PVc
ECF
Enable circuit failure
ECL
Customizable logic error
Err
Mock alarm
Table 5.1 Quick List of Alarm Codes
The inverter momentary output current exceeded the
overcurrent level.
OC1
OC2
: Overcurrent during acceleration
OC3
: Overcurrent during deceleration
: Overcurrent during running at a constant speed
The DC link bus voltage exceeded the overvoltage
detection level.
OV1
OV2
: Overvoltage during acceleration
OV3
: Overvoltage during deceleration
: Overvoltage during running at a constant speed
The DC link bus voltage dropped below the undervoltage
detection level.
An input phase loss occurred or the Interphase voltage
unbalance rate was large.
An output phase loss occurred.
The temperature around the heat sink has risen
abnormally.
The external alarm THR was entered.
(when the THR "Enable external alarm trip" has been
assigned to any digital input terminal)
The temperature inside the inverter has exceeded the
allowable limit.
The temperature of the motor has risen abnormally.
The electronic thermal protection for motor overload
detection was activated.
The temperature inside the inverter has risen abnormally.
An error has occurred in writing data to the memory in the
inverter.
A communications error has occurred between the
keypad and the inverter.
A CPU error or LSI error has occurred.
A communications error has occurred between the
connected option card and the inverter.
An error was detected by the connected option card (not
by the inverter).
An incorrect operation was attempted.
Auto-tuning has failed, resulting in abnormal tuning
results.
A communications error has occurred during RS-485
communication.
When the undervoltage protection was activated, the
inverter failed to save data, showing this error.
The LSI on the power printed circuit board has
malfunctioned due to noise, etc.
The PID feedback signal wire is broken under PID control.
The Enable circuit was diagnosed as a circuit failure.
A customizable logic configuration error has caused an
alarm.
A mock alarm has been generated intentionally by keypad
operation.
5-1
Description