Mitsubishi Electric FR-F820-00046 Instruction Manual page 584

Operation panel
E.IAH
indication
Name Abnormal internal temperature (Standard models and IP55 compatible models only)
Description The inverter output is shut off when the inverter internal temperature reaches the specified value or higher.
• Check for too high surrounding air temperature.
Check point
• Check if the internal air circulation fan or the cooling fan stops due to a fault.
• Install an inverter suitable for the installation environment. (Refer to the Instruction Manual (Hardware).)
Corrective action
• Replace the internal air circulation fan or the cooling fan.
Operation panel
E.LCI
indication
Name 4 mA input fault
The inverter output is shut off when the analog input current is 2 mA or less for the time set in Pr.778 4 mA input
Description check filter. This function is available when Pr.573 4 mA input check selection = "2 or 3". (Refer to
This protective function is not available in the initial status.
• Check for a break in the wiring for the analog current input.
Check point
• Check that the Pr.778 setting is not too short.
• Check the wiring for the analog current input.
Corrective action
• Set the Pr.778 setting larger.
Operation panel
E.PCH
indication
Name Pre-charge fault
The inverter output is shut off when the pre-charge time exceeds Pr.764 Pre-charge time limit. The inverter
output is shut off when the measured value exceeds Pr.763 Pre-charge upper detection level during pre-
Description
charging. This function is available when Pr.764 and Pr.763 are set (refer to
is not available in the initial status.
• Check that the Pr.764 setting is not too short.
• Check that the Pr.763 setting is not too small.
Check point
• Check that the Pr.127 PID control automatic switchover frequency setting is not too low.
• Check for a break in the connection to the pump.
• Set the Pr.764 setting longer.
• Set the Pr.763 setting larger.
Corrective action
• Set the Pr.127 setting higher.
• Check the connection to the pump.
Operation panel
E.PID
indication
Name PID signal fault
The inverter output is shut off if the measured value exceeds the PID upper limit or PID lower limit parameter
setting, or the absolute deviation value exceeds the PID deviation parameter setting during PID control. Set this
function in Pr.131 PID upper limit, Pr.132 PID lower limit, Pr.553 PID deviation limit, and Pr.554 PID signal
Description operation selection. (Refer to
The inverter trips when the input pressure reaches the fault level under PID input pressure control. Set this
function in Pr.1370 PID upper limit and Pr.1379 PID input pressure fault level. (Refer to
protective function is not available in the initial status.
• Check the meter for a failure or break.
Check point
• Check that the parameter settings are correct.
• Check that the meter has no failure or break.
Corrective action
• Set the parameters correctly.
FR-LU08 indication Abnormal Intnl Temp
FR-LU08 indication 4 mA input fault
FR-LU08 indication Pre-charge fault
FR-LU08 indication PID signal fault
page 401.) This protective function is not available in the initial status.
page 350.)
page 425). This protective function
page 439.) This
6. PROTECTIVE FUNCTIONS
6.5 Causes and corrective actions
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