UPS cooler problem

[Hunan]

Hello Dear Mr., Miss
I inform you that we have uninterruptible power supplies HP Model: R1500 G3 INTL which are already out of warranty. They proved to be excellent in the process of operation, but at the moment we have a problem with the stops of the built-in coolers of these models, which leads to the shutdown of the UPS. Please tell me how to disable the UPS shutdown function when the cooler stops. It is desirable that when the cooler stops there is only an audible warning. Uninterruptible devices are located in a microclimate: 22°C with constant air blowing.

Kind regards,

Hunan

[BeemerBiker]

What are the alarm indications?

From page 29 of users manual there is as fan stop warning and an over temp warning.  

https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=emr_na-c02867104

Do these or any other indicators show up?

Have you looked at a battery analysis?  I do not have that model UPS but I assume there are reports to show how long the battery has been used, number or recycles, etc.  

No matter what temp you keep the room at if the battery overheats due to charging failure caused by old age or defect you can have a fire.  I  managed to get a replacement battery for my Surface Pro 4 that was two years out of warrantee as I told the rep I do a lot of flying and was concerned it might catch fire on the plane.  That wont work for you unfortunately.