You definitely have a problem with the high power of the Philips... Do you have other loads on the same mains supply? Try plugging the Philips into a socket that belongs to a different fuse. If the same thing happens there, it could be the Philips. Otherwise I would ask an electrician
Is it possibly due to the standard 2.4 GHz interface? See instructions on page 14 under the "Laser signet". It worked for me without any problems, but I had the same problem with a timer app and then had to set up a second interface with 2.4 GHz instead of 2.0 GHz. Unfortunately I am not familiar with this, so my tip should have nothing to do with it.
The appliance does not cool, but ventilates. Like any fan, it only stirs the air and does not cool. It is therefore not possible to set a temperature in this mode.