Fans are thermostatic controlled. Thermostat is on condenser --turns on fans when fin temp is 135*F and turns them back off when fin temp is 115*F fin.
NO fans should not be running in low ambient air temps (usually not needed below 85*F air temps)
The 2 heaters are 225W/EA (450W) so a bit low at 415W
Air flow is needed (Draft) to remove heat from cooling unit.
Blocking off a couple of vents and using a 60W bulb helps when temps are below freezing....but not completely blocked off.
A quick visual for gas pressure......turn on all stove top burners on high. Watch each as you turn on another one. Flames steady/remain at same height or do the diminish height?
Now with them all running turn on furnace or water heater.
Do they recover? If not........LP pressure needs adjusted.
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31