MD-1000I / MD-2000I / MD-3000I Trouble Shooting Guide
MD Series 80
Malfunction code:
Code Meaning
Er05 Battery weak or defective
Er06 Output short circuit
Er07 EPO mode
Er11 UPS under excessive temperature
Er12 Inverter overload
Er14 Fan defective
Er18 EEPROM data error
Er24 Power supply low (<85/170V) and battery not
connected
Er28 Bypass overload
Er31 EEPROM data doesn't match. Settings of
control and driver boards don't match.
If you don't find the failure in the table, please contact our service department.
You'll need to provide the following information when you talk to them.
1 Model number, serial number
2 Date on which the problem first occurred
3 Detailed description of the problem
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