Set +39C temperature Sanyo MC-175M CO2 incubator

Hello,

I have a problem with setting +39C in my incubator. I need to increase temperature to +39C, but every time when the temperature in the incubator is over 37.5C the alarm is on. Is there any possibility to change the upper limit alarm to 40C? I could not find the information in the user's manual.

Thank you very much.