User manual

For more information visit: www.EatonElectrical.com 251MN05013003E
7 What Happens If ...?
You may sometimes find that EZ does not do exactly what you
expect. If this happens, read through the following notes
which are intended to help you solve some of the problems
you may encounter.
You can use the power flow display in EZ to check the logic
operations in the EZ circuit diagram with reference to the
switching states of contacts and relays.
Only qualified persons should test EZ voltages while the
device is in operation.
Messages from the EZ
system
EZ system
messages on the
LCD
Explanation Remedy
No display Power supply interrupted Switch on the power supply
EZ LCD faulty Replace EZ
Continuous display
TEST: AC Self-test aborted Replace EZ
TEST: EEPROM
TEST: DISPLAY
TEST: CLOCK
ERROR: I2C
Memory card removed or not inserted
correctly before saving
Insert memory card
Memory card faulty Replace memory card
EZ is faulty Replace EZ
ERROR: EEPROM
The memory for storing the retentive
values or the EZ circuit diagram memory is
faulty.
Replace EZ
EZ500_700.book Page 251 Tuesday, May 3, 2005 5:15 PM