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Smart-UPS 1500 - False site wiring warning

APC UPS for Home and Office Forum

Schneider Electric support forum for our APC offers including Home Office UPS, Surge Protectors, UTS, software and services and associated products designed to share knowledge, installation, and configuration.

OVERKILL_apc
Crewman
Crewman
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Smart-UPS 1500 - False site wiring warning

I have two of these units at the house, both are environment pulls from upgrade jobs. Both work fine. 

 

However

 

The one unit constantly displays the "Warning State: Site Wiring" and has a bit of a transformer hum to it. The other one, if plugged into the same outlet, does not display the warning, nor do any of my other UPS's. The other one is also silent (no hum). 

 

I was going to try directly grounding the chassis and see if that has any impact, just curious if anyone has run into this before? I assume it's an internal wiring issue with the unit that's causing it not to sense that it is grounded. 

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BillP
Administrator Administrator
Administrator
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Re: Smart-UPS 1500 - False site wiring warning

@OVERKILL_apc 

 

What is the exact model, serial number, and firmware version of the UPS? If the UPS is a SMT SmartConnect UPS or SMTL you can disable the site wiring fault using the LCD panel. 

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OVERKILL_apc
Crewman
Crewman
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Re: Smart-UPS 1500 - False site wiring warning

Model: SMT1500

Serial: AS1132111365

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