Troubleshooting And Countermeasure; Troubleshooting Chart - Mitsubishi Electric FR-K-400-U Instruction Manual

8. TROUBLESHOOTING A N D COUNTERMEASURE
I n the unlikely event that there should,be problems with the inverter or i t s should lose any of its functions,
use the troubleshooting chart below t o identify the cause and apply the appropriate countermeasure. If your
problem i s not described below, the inverter i s out of order, one of the parts has been damaged or i f you have
any other problem not dealt with here, contact with your local service representation.
8-1 Troubleshooting Chart
( 1 )
Motor does not run
START
i i
Note 1.
power supply has been
Are MCCB (ELB), MS. Yes
terminals R and S, S
etc. turned on?
Defective MCCB (ELBI or
and T . T and S.
MS, or wiring trouble
lamp lit up?
pacity transformer?
Inverter trouble
Cooling fan trouble
tion relay of radiation
Ventilation obstruction fan. Remove
Set reret rwitch lbetween terminals
Is reset switch "ON"? RES and SD) t o "OFF"
1s voltage across termi-
t
y e s
. (
Defective reret switch
nals RES and SD below
Transistor falls t o function when energized.
14V?
L
No
lcont'd on next right page1