Mend Office Appliances, Cash Registers

Office Appliances, Cash Registers
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Cash Registers

Mend Mend Office Appliances, Cash Registers

I have code 99 on my uniwell nx 5400 how do I fix it?

How do I fix code99 on my uniwell. Nx 5400

Rosalie Woodfor
April 2018
Hi. Error 99 (or EE-99) usually indicates loss of program. Normally caused by battery going flat (if left unplugged for too long). You need to re-program it. Checkout tech has the programming manual for this model:

Try just programming one or two things on it first, then power it off overnight. If it goes back to error 99, your battery is no good.

April 2018

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