Edward H Harrisburg , PA March 15, 2015 Appliance: Maytag Refrigerator MBF2254HEW14 Maytag Refrigerator Mbf2254hew14: Refrigerator warm freezer normal. How to replace Refrigerator Defrost Heater. The cooling coils were iced-up. The ice was blocking air flow to the refrigerator. This resulted in the freezer working fine while the refrigerator was warm. Called AppliancePartsPros and talked to Sally. Sally was a big help in troubleshooting the problem. I ordered and replaced the cooling coil heater. If you attempt to do this repair yourself, BE CAREFUL, the cooling coil fins are sharp. 11 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours