In 4510 are Sun Frost model R19 refrigerator and model F4 freezer.

Diagnosing the temperature sensors:  with an ohmmeter, check that
their resistance is in the range of 12,000-40,000 ohms.  If it's
outside that range, it must be replaced.

Larry Schlussler  (707) 822-9095
Arcata, CA

Refrigerator/Freezer Dimensions
      H     W   depth  CF
R19   66" 34.5" 27.75" 8.07 cu ft
R10 43.5" 34.5" 27.75"
R4  31.5" 34.5" 27.75"
F4  31.5" 34.5" 27.75" 3.91 cu ft

Add 8" to height for clearance for ventilation

R19 $3200
F4  $1800