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:
- Turbo Air
- Artic Air
- US Cooler
- Nor-Lake Inc.
- Crown Tonka
List of common Walk In Cooler and Freezer issues:
|Power is on, but control board does not display||Phase 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 run||Compressor 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.
|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 pressure||Dirty 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 pressure||Insufficient refrigerant in system.
Low suction pressure
|Check for leaks; repair and add charge.
See corrective steps for low suction pressure
|High suction pressure||Excessive load.
Expansion valve overfeeding
|Low suction pressure||Lack 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
|Large difference between actual cold storage room temperature and set point on control panel||Incorrect room temperature
Sensor placement, wire too long
Sensor contactor open
|Re-position sensing point of temperature sensor
Enlarge wire section
|Heavy Frost builds up on evaporator fins||Too much time between defrost cycles or incomplete defrosts||Manual defrost and adjust defrost cycle|
|High temperature alarm||Overload 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 cycle||Heater malfunction
Not enough defrost cycles per day
|Check heater operation
Adjust defrost control
|Ice accumulating in drain pan||Defective heater
Drain line plugged
|Check heater; replace if necessary
Clean drain line
|Display screen flashes, unit emits humming noise||Observe alarm indicator||See alarm indicator for remedy|