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SPAZIO FORMA: Service & Maintenance manual - rev. 1.0
6.4.1.
T
HE INVERTER DISPLAY SHOWS
These inverter error messages are related to output short-circuit problems.
E01
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.
(2)
Place the tester probes between the blue – black, blue – brown and black – brown conductors
of the motor cable. The measured resistance should be 3.3 Ohm.
E02
1
Is the inv erter output short-
circuited?
NO
2
Is there a short-circuit on the
motor cable terminals?
NO
Does the machine resume
correct operation af ter being
turned of f f or 1 minute?
NO
Replace the inv erter
E01, E02, E03, E04
E03
E04
YES
Replace the inv erter
YES
Replace the belt motor
YES
Probable interf erence. The
machine is OK
E05
OR
E05
Page 6.11
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