Communication problem between main and display pcb
on left of display
f5 = freezer sensor fail
r5 = refrig sensor 1 fail
o5 = frost removal sensor fail
dH = frost removal is poor
ff = fan failure freezer
cf = fan failure in motor chamber
co = comm error pcbs
on right of pcb
Lo – room temp less than 10 degrees
Hi – room 50 degrees +
ER- room temp sensor fail