General Contractors

Diagnosing Walk-in Cooler and Freezer Refrigeration Problems

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HVAC technician charging a heat pump with refrigerant

Nowadays, walk-in cooler or freezer has become an integrated part of cafeterias, restaurants and food stores. When these giant refrigerators stop working, waiting for appliance repair technician to come and repair the appliance is not an easy task. As there are plenty of expensive food items stored in the walk-in cooler, delay can cause a massive loss. Thus, in such situation, you can try troubleshooting your walk-in cooler and freezer on your own.

How to Troubleshoot a Walk-In Cooler?

By troubleshooting your walk-in cooler, you may be able to determine the cause which is not letting your Walk-in Cooler & Freezer work. If problem is minor, you may able to fix it as well. However, if you are not able to understand walk-in cooler’s problem, stop troubleshooting walk-in cooler immediately.

The most common problems of walk-in coolers and freezers are:

  • Control board does not display the Power ON.
  • Control board is displaying Power ON but compressor is not working.
  • High discharge pressure
  • High suction pressure
  • Low discharge pressure
  • Low suction pressure
  • Huge difference between set cold storage temperature and actual cold storage temperature
  • Heavy frost buildup
  • Coil not clearing the frost during defrost cycle
  • Too much ice blocking the drain pan
  • Device is making humming noise

These are some potential problems with which you may have to deal. You may handle small problems, but if a problem appears big, wait for appliance repair professional.

Troubleshooting walk-in refrigerators

Follow the below mentioned steps to troubleshoot your walk-in cooler:

  • Checkout whether the power supply to walk-in freezer is ON and functioning properly. Then, look into the breaker box and check the freezer switches. If everything is fine here, move forward.
  • Thoroughly examine the door gasket for snow buildup. Open and close the door to see if it is working properly. If you find any air leakage, try to tighten the hinges.
  • Clean the evaporator coil using vacuum, and don’t forget checking the drain pan.
  • Analyze the direction in which the fans of the walk-in cooler are moving. If fans are malfunctioning or moving in the wrong direction, it can put extra strain on the motor.

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