The Inverter Display Shows E12 - Technogym Forma Service Maintenance Manual

FORMA: Service & Maintenance manual - rev. 3.0
6.3.5. T
HE INVERTER DISPLAY SHOWS
This inverter error message is related to the opening of the motor thermal cutouts.
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 thermal cutout cables from the inverter and place the tester probes
across them. The measured resistance should be less than 1 Ohm.
In some cases the value may be higher due to oxidation of the contacts. To reinstate
correct operation, it is necessary to perform a special operation which will be described
to you on contacting the Technogym Service.
E12
E12
Does the machine resume
correct operation after being
turned off for 1 hour?
NO
Is the thermal cutout on the
motor OK?
YES
Is the wiring between the
motor thermal cutout and
the inverter correct?
YES
Does the error persist
YES
after disconnecting the
motor thermal cutout
cables from the inverter
input?
YES
Probable overheating of
the motor. The machine is
OK
1
NO
Replace the belt motor
2
NO
Replace cable FR-7 or
FR-8
3
NO
Programming error on the
inverter. Reprogram it.
Page 6.15