Thomas J Destin , FL February 12, 2016 Appliance: Whirlpool Refrigerator GD25SFXHS04 Whirlpool Refrigerator Gd25sfxhs04: The unit was not keeping suitable temperature if you tapped the cold control(thermostat) it would come on for one complete cylce. How to replace Ice Door Kit. Replacing the cold control solved the problem. While i was at it i also replaced the defrost timer and installed a new ice door. 5 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes