The Inverter Display Shows E14 - Technogym Forma Service Maintenance Manual

FORMA: Service & Maintenance manual - rev. 3.0
6.3.6. T
HE INVERTER DISPLAY SHOWS
This inverter error message is related to poor isolation between the motor phases and ground.
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.
E14
1
Are the motor phases
isolated from ground at the
inverter output?
YES
2
Are the motor phases
isolated from ground?
YES
Check and reinstate cable
FR-8
E14
NO
Replace the inverter
NO
Replace the belt motor
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