Any ice will have some impact on the efficient cooling of the fridge.
The more ice build up the less cooling and the softer your ice cream
Make sure you have the drip pan hose outside the camper's access panel (and not INSIDE like mine was delivered) and the pan is completely under the fins and then:
If on battery and propane (like boondocking) turn off the fridge for an hour; then check. They should be clear; then turn the fridge back on.
If on Campground (shore) power, just make sure the "climate control - defroster" switch is on and it will do this automatically. TURN IT OFF before you go back on battery. The heater that warms the fridge air to defrost is 12VDC and will kill your battery quickly.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW