FORMA: Service & Maintenance manual - rev. 3.0
Page 6.9
6.3.1. T
HE INVERTER DISPLAY SHOWS
E01, E02, E03, E04
OR
E05
These inverter error messages are related to output short-circuit problems.
1
NO
Replace the inverter
YES
Is the inverter output
short-circuited?
Is there a short-circuit on the
motor cable terminals?
Is the belt motor
short-circuited?
Replace the belt motor
Replace the belt motor
cable
2 3
YES
YES
NO
Does the machine resume
correct operation after being
turned off for 1 minute?
YES
Probable interference. The
machine is OK
Replace the inverter
NO
NO
E02 E03 E04 E05E01
Follow the procedure step by step to correctly diagnose the problem. Take particular care with the
checks highlighted by circled numbers, which are described in detail below:
(1) Disconnect the motor cable from the inverter and place the tester probes between its U-V, U-
W and V-W terminals. The measured resistance should be very high, in the order of MOhm. It
is difficult to make a stable measurement of resistance, however a phase can be considered
short circuited or defective when the measured resistance is in the order of a few tens of
Ohms.
To Next Page
Loading...
