Operation Manual

RUNRACE : Service & Maintenance Manual - rev. 2.0
Page 6.18
6.4.5. THE INVERTER DISPLAY SHOWS E12
This inverter error message is related to the opening of the motor thermal cutouts.
Does the error persist af ter
disconnecting the motor
thermal cutout cables
f rom the inv erter inputt?
Is the thermal cutout on the
motor OK?
YES
Replace the belt motor
Replace cable RN-5TQ
NO
YES
2
NO
1
Replace the inv erter
YES
E12
Does the machine resume
correct operation af ter being
turned of f f or 1 hour?
Probable ov erheating of the
motor. The machine is OK
NO
Is the wiring between the
motor thermal cutout and the
inv erter correct?
Programming error.
Reprogram the inv erter
NO
YES
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
between their terminals. 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.
(2) Disconnect the motor thermal cutout cables on both the motor and inverter sides, and place
the tester probes at either end of each wire. The measured resistance should be 0 Ohm.
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