Technogym Forma Service Maintenance Manual page 49

FORMA: Service & Maintenance manual - rev. 3.0
6.3.1. T
HE INVERTER DISPLAY SHOWS
These inverter error messages are related to output short-circuit problems.
E01 E02
Is the inverter output
short-circuited?
Is there a short-circuit on the
motor cable terminals?
Does the machine resume
correct operation after being
turned off for 1 minute?
Replace the inverter
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.
E03
1
YES
NO
2
YES
NO
YES
NO
E01, E02, E03, E04
E04 E05
Replace the inverter
3
Is the belt motor
short-circuited?
Probable interference. The
machine is OK
E05
OR
YES
Replace the belt motor
Replace the belt motor
cable
NO
Page 6.9