2704 Error message

Alarm message for 2704 controller:
1. What's mean "Bad Prog CSum" and "Bad NOVL CSum" alaem message?
2. How to do clean alarm?
3. What's action to slove this error or suggestion?
Thanks.
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  • Jon (Official Rep) December 17, 2014 08:51
    Hello Dennis,
    If you can acknowledge the error message and then check that the config is ok and then exit config this may restore the checksum value.

    If the above doesn't help - The error message may indicate that the battery that is used to retain parameter storage requires replacement. This needs to be done by a Eurotherm service centre and the best way to proceed will be to contact your local Eurotherm supplier for advice and contact information.
    Regards, Jon
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