Code P.06 on SMT2200C

[Alonso]

My APC SMT2200C does not allows on output voltage, trying to configure it require a kind of unlock code, mentioning use the up, down and ESC keys.

at the end a code P.06 is on display

[RyanG32]

You can login to the network card and see if the display is locked see this video

https://www.youtube.com/watch?v=ECBMSJRrgXs

P.06 means that there is an issue with the AVR relay this usually happens when there is a input power issue due to unstable power so UPS maybe on constant AVR mode or it could not use UPS AVR function. Make sure to take note of Input and output power's Voltage and  frequency. If in put is not normal (120V 60HZ) try to look for an outlet that has normal power. Otherwise turn off output and after a few minutes turn it back on or perform a logic reset follow article  https://www.apc.com/us/en/faqs/FA156611/

If the error does not go away check if there are other UPS that has same issue otherwise you have a hardware fault.

If issue persist check the warranty of the UPS using this link

https://www.apc.com/us/en/support/product-support/ups-factory-warranty-information.jsp??

If the unit is is warranty contact support and provide details of your issue

their number is 1-800-800-4272 option 4 for tech support

Otherwise consider replacing the UPS they offer discount on for customers with existing units see TradeUPS link

https://www.apc.com/shop/tradeups/us/en/tradeups/overview.jsp