RV Fridges do NOT have moving parts so they are pretty dang quiet when operating.
ANY noise that sounds like a fan IS a fan.
Fans have been used on many models of RV Fridges. They are used to improve/help the natural draft that is needed for cooling.
RV Fridges in slideout SHOULD have them due to obstruction of the natural draft effect
Some have them as 'mods' to correct improper installation of RV Fridge by RV MFG.
Fans are typically mid-center just above absorber tubes and are controlled by t-stat installed on far right fin on condenser (top finned cooler)
Some t-stats are set to turn fan(s) ON at 150*F fin temp and OFF at 135*F fin temp\some On at 130*F --Off at 115*F\others On at 105*F and Off at 90*F
The lower ON temp the shorter run time which can cause fan(s) cycling
Gurgling sounds are due to blockages in cooling unit and is a sound you do NOT want to hear
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