Technogym Forma - The Inverter Display Shows E14

FORMA: Service & Maintenance manual - rev. 3.0
Page 6.17
6.3.6. T
HE INVERTER DISPLAY SHOWS
E14
This inverter error message is related to poor isolation between the motor phases and ground.
Are the motor phases
isolated from ground?
YES
Replace the belt motor
Check and reinstate cable
FR-8
NO
YES
2
E14
Are the motor phases
isolated from ground at the
inverter output?
Replace the inverter
NO
1
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 terminals U,
V and W of the inverter and the earth screw (PE). The measured resistance should be in the
order of MOhms or higher.
(2) Disconnect the motor cable from the motor and place a tester between its terminals U, V and
W and ground. The measured resistance should be in the order of MOhms or higher.