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Commercial Refrigeration Repair: Walk In Cooler and Freezer

Commercial Refrigeration Repair: Walk In Cooler and Freezer

Do you have a Walk In Cooler or Freezer that needs repairs? Is it not cold enough, leaking water, making funny noises, or doing something else that it shouldn’t be doing? AccuTemp has seen it all. Let us help you get up and running again.

Walk In Cooler and Freezer brands that AccuTemp can repair:

  • Arctic
  • Kolpak
  • Nor-Lake
  • True
  • Traulsen
  • Turbo Air
  • Artic Air
  • US Cooler
  • Hussmann
  • Kolpak
  • Master-Built
  • HeatCraft
  • Nor-Lake Inc.
  • Hill-Phoenix
  • Electrolux
  • Nemco
  • Crown Tonka

List of common Walk In Cooler and Freezer issues:

MalfunctionPossible CauseSolution
Power is on, but control board does not displayPhase loss or fuse blown
Power phase open or transformer shorted
Control Board Failure
Check wiring for breaks and replace fuse
Check Transformer output voltage
Replace cold storage room control board
Control board displays, but compressor does not runCompressor relay tripped.
Hi-Lo pressure safety switch shut down.
Defective contactor or coil
Cold room temperature is lower than operation setpoint
Internal thermal overload tripped.
Compressor malfunction
Determine reason and take correct action
Determine type and cause of shutdown and correct it before resetting safety switch.
Repair or replace
Reset operation temperature setpoint
Wait until compressor cools down for reset
Check compressor motor winding
High discharge pressureDirty condenser coil
Fan not running
System overcharged with refrigerant
Clean walk-in cooler and walk-in freezer condenser coil
Check fan motor and its electrical circut
Reclaim excess refrigerant
Low discharge pressureInsufficient refrigerant in system.
Low suction pressure
Check for leaks; repair and add charge.
See corrective steps for low suction pressure
High suction pressureExcessive load.
Expansion valve overfeeding
Reduce load
Regulate superheat
Low suction pressureLack of refrigerant
Plugged suction filter
Evaporator dirty or iced.
Fan not operating
Expansion valve underfeeding
Check for leaks. Repair and add charge
Replace suction filter
Clean and defrost
Check fan motor and circuit control
Regulate superheat
Large difference between actual cold storage room temperature and set point on control panelIncorrect room temperature
Sensor placement, wire too long
Sensor contactor open
Re-position sensing point of temperature sensor
Enlarge wire section
Reconnect sensor
Heavy Frost builds up on evaporator finsToo much time between defrost cycles or incomplete defrostsManual defrost and adjust defrost cycle
High temperature alarmOverload and door open excessively
Bad refrigeration performance
Heavy frost build-up on evaporator
Reduce load and door opening
See corrective steps for discharge and suction pressure malfunctions
Manual defrost and adjust defrost cycle
Coil not clearing of frost during defrost cycleHeater malfunction
Not enough defrost cycles per day
Check heater operation
Adjust defrost control
Ice accumulating in drain panDefective heater
Drain line plugged
Check heater; replace if necessary
Clean drain line
Display screen flashes, unit emits humming noiseObserve alarm indicatorSee alarm indicator for remedy
Call us today at 602-957-3745