Randell Refrigeration Troubleshooting

/ Commercial Refrigeration, Troubleshooting / December 12

Randell Refrigeration Troubleshooting

When it comes to cooling food, beverages and ingredients, Randell makes some of the best refrigeration units in the foodservice industry. It’s why commercial kitchens have been relying on them for decades.

Like any commercial equipment that is working 24/7, some issues can pop up over the years. But don’t worry. Whether it’s a reach-in, blast chiller, side-mount or prep table, below are common Randell refrigeration troubleshooting tips to help get the unit back on track.

Unit Won’t Run or Pre-Chill



  • No power – Check if the unit is unplugged from the outlet or if the circuit breaker in the facility needs to be reset. If the power cord is damaged, replace it immediately.

  • Temperature control off or faulty – The temperature control could be turned off or broken. Contact a certified technician to repair the issue.

  • Damaged condenser fan or compressor – A faulty condenser fan or compressor will keep the unit from running. Have the either issue serviced by an authorized technician.
    Randell BC20 Blast Chiller Refrigeration Unit

                           Randell BC20 Blast Chiller


  • Damaged overload protector or compressor relay – A fault overload protector or relay could be halting the unit. Have an authorized technician test either the overload or rely to remedy the issue.


Unit Too Warm or Not Cold Enough



  • Incorrect temperature setting – The set point on the unit might be too high. See your owner’s manual for how to adjust the control set point.

  • Door won’t seal shut – Check the door to see if there is an obstruction or the gasket is damaged. Remove any obstruction to see if the door shuts. If the door gasket has cracks or is worn, replace it.

  • Dirty condenser coil – Try to clean condenser coil at least once every few months, or consult the unit’s owner’s manual for maintenance instructions.

  • Iced evaporator coil – If the evaporator coil is frosted with ice, there could be a couple of problems at hand. First, check if the door is cracked open. This can affect the cooling process in your unit. If that isn’t the cause, there could be a problem with the defrost system. Have a technician check components in the defrost system to correct the issue.

  • Damaged evaporator fan – A broken evaporator fan can cause the unit to overheat and not cool properly. Contact an authorized technician repair fan blades or replace the entire evaporator fan.


Unit Too Cold



  • Incorrect temperature setting – The set point on the unit might be too low. See your owner’s manual for how to adjust the control set point.

  • Temperature control is broken – If the temperature control is damaged, this can cool down the unit. Contact a certified technician to test the control and replace if broken.


Unit is Noisy



  • Iced evaporator coil – A frosted evaporator coil can be tied not only to overheating but also to noise. If you see ice, check if the door is cracked open. This can affect the cooling process in your unit. If that isn’t the issue, there could be a problem with the defrost system. Contact a service technician to check components in the defrost system.
    Randell 9045K-7 Prep Table

                           Randell 9045K-7 Prep Table


  • Not level – See if the unit isn’t level. If it isn’t, adjust the leveling leg or shim casters.

  • Condenser or evaporator fan – The condenser fan or evaporator fan could be damaged or hitting shroud. Remove any obstruction or have the fan replaced.

  • Compressor mountings wobbly or damaged – If the compressor mountings are loose, fasten them. If there is any damage to the mountings, replace them.

  • Louver rattling – Check the mechanical compartment louver to see if it’s out of adjustment. Readjust the louver by bending or aligning the tabs, so it decreases noise. If there is significant damage, replace the louver.


Moisture by Door or on Floor by Unit

Whenever you notice moisture on the door or frame or water by the drain pan or near the bottom of the unit, look for the following:


  • Broken breaker strips (door or frame moisture) – See if the breaker strips are damaged. If so, replace them.

  • Incorrect temperature setting (door or frame moisture) – The set point on the unit might be too low. Check your owner’s manual for how to adjust the control set point.

  • Not level (moisture on floor) – See if the unit isn’t level. If it isn’t, adjust the leveling leg or shim casters.

  • Clogged drain tube (moisture on floor) – Check the drain tube for any clogs or obstructions. Clean the drain thoroughly to prevent moisture from overflowing out.

If you need to more help troubleshooting a Randell refrigeration unit, check out our collection of Randell manuals.


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