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Tips of the Trade
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Tools & Gear
- How to Use a Plumbing Snake
- What is True RMS
- 8 Best HVAC PPE for the Job
- 4 Ways to do Cordless Tool Storage in a Service Truck
- Best Power Saws for Technicians
- Learn How to Test a Fuse with a Multimeter in 5 Steps
- Best HVAC Service Wrenches
- Best Wire Crimper Tools in 2023
- Best Automatic Wire Strippers for Technicians in 2023
- Types of HVAC Safety Glasses
- 7 Types of Electrical Testers & Their Uses
- Best Multi Tool Kits for 2023
- 5 Best Wire Strippers for Technicians for 2023
- Best HVAC Hand Tools for 2023
- 7 Best Electrician Pliers for Technicians in 2023
- Best Oscillating Tools for Technicians in 2023
- Best Flashlights for Technicians in 2023
- Best Power Tools for Electricians in 2023
- A Fast & Easy Guide on How to Calibrate a Multimeter
- Master How to Use Wire Strippers in 7 Steps or Less
- Discover How to Find a Ground Wire in 4 Different Ways
- Air Tools vs. Electric Tools: Discover 5 Pros & Cons
- Best Thermal Imaging Cameras for HVAC
- How to Measure Current with a Multimeter in 5 Steps
- 4 Best Power Tool Batteries of 2023
- Which Cordless Drill is Best for HVAC Work?
- 4 Top Cordless Impact Drivers of 2023
- How to Test a Wire for Voltage in 5 Steps
- Voltage Tester vs. Multimeter: What's the Difference?
- Fluke Vs. Klein Multimeters: Which One Better Meets Your Needs
- 4 Best Multimeters for HVAC in 2022 & 2023
- Best Cordless Power Tools for 2022 & 2023
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HVAC
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Food Prep
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Dishwashing & Warewashing
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Beverage
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Cold Side
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- Ice-O-Matic CIM Error Light Diagnostics
- Ice-O-Matic CIM Pump Replacement Instructions
- Ice-O-Matic GEMU090 Pump Kit Installation Instructions
- Hoshizaki Water Filter System Installation
- Hoshizaki Ice Machine Repair & Replacement Guides For Technicians
- Danfoss Controller Reset
- Scotsman Ice Machine Repair
- How to Install a Hoshizaki Ice Machine
- How to Install a Scotsman Ice Machine
- Resolving Manitowoc Ice Maker T3 and T4 error codes
- Changing a Manitowoc Ice Machine Water Pump
- Ice-o-Matic Troubleshooting Starts with a Reset
- Strategies to Find Leaks That Pool in Ice Bins
- How to Resolve the E24-T4 Error Code on Manitowoc Ice Makers
- Manitowoc Control Board Replacement
- Manitowoc Ice Machine Installation for Authorized Technicians
- Ice-O-Matic Timer Adjustment
- Manitowoc Ice Training Resources for Technicians
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- Refrigeration Capillary Tube Troubleshooting for Technicians
- Danfoss Controller Reset
- How to Recharge the Freon in a Commercial Refrigerator or Freezer
- Dixell Controller Factory Reset Instructions
- How to Replace a Temperature Controller on a True Freezer Model t-49f
- How to Tell Whether Your TXV is Bad
- How to Remagnetize a Refrigerator/Freezer Door Seal
- R32 vs R290 vs R134a vs R12 Refrigerant
- How to Resolve the “HA” Error Code on Perlick Bar Coolers
- U.S. Refrigerant Phase Out Chart & Info
- Global Warming Potential of Refrigerants
- True Traditional Reach-In & GDM Wire Gauge Charts for Authorized Technicians
- Nor-Lake Capsule Pak Walk-In Cooler Installation
- What Happens If You Put R134a in an R12 System?
- How to Remove Continental Refrigerator Electrical Controls for Authorized Technicians
- Continental Refrigerator Error Codes & Resolutions for Authorized Technicians
- R134a Pressure Chart for Refrigerators, Prep Tables & More
- How to Adjust a Kolpak Walk-In Door Sweep
- Replacing a Kolpak Walk-In Freezer Door Heater Wire
- Adjusting Kolpak Walk-In Cooler Door Hinges & Closers
- Replacing a Kolpak Walk-In Door Gasket & Handle
- Kolpak Walk-In Cooler Installation
- What Pressure Should R404a Run at on a Cooler?
- What is R134a Replacement?
- How to Conduct Diagnostics on Delfield Specification Line
- How to Replace a Delfield Specification Line Touchscreen
- How to Change Danfoss ERC Controllers
- R12 to R134a Conversion Chart & Formula
- Show all articles ( 13 ) Collapse Articles
- Ice-O-Matic CIM Error Light Diagnostics
- Ice-O-Matic CIM Pump Replacement Instructions
- Ice-O-Matic GEMU090 Pump Kit Installation Instructions
- Refrigeration Capillary Tube Troubleshooting for Technicians
- When and How to Adjust a Thermostatic Expansion Valve (TXV)
- Hoshizaki Ice Machine Repair & Replacement Guides For Technicians
- Danfoss Controller Reset
- Scotsman Ice Machine Repair
- How to Recharge the Freon in a Commercial Refrigerator or Freezer
- Dixell Controller Factory Reset Instructions
- How to Replace a Temperature Controller on a True Freezer Model t-49f
- How to Install a Hoshizaki Ice Machine
- How to Install a Scotsman Ice Machine
- Resolving Manitowoc Ice Maker T3 and T4 error codes
- Changing a Manitowoc Ice Machine Water Pump
- Ice-o-Matic Troubleshooting Starts with a Reset
- How to Tell Whether Your TXV is Bad
- How to Remagnetize a Refrigerator/Freezer Door Seal
- R32 vs R290 vs R134a vs R12 Refrigerant
- How to Resolve the “HA” Error Code on Perlick Bar Coolers
- U.S. Refrigerant Phase Out Chart & Info
- Strategies to Find Leaks That Pool in Ice Bins
- Global Warming Potential of Refrigerants
- How to Resolve the E24-T4 Error Code on Manitowoc Ice Makers
- True Traditional Reach-In & GDM Wire Gauge Charts for Authorized Technicians
- What is R22 Refrigerant?: Phase Out, Alternatives & More
- Nor-Lake Capsule Pak Walk-In Cooler Installation
- What Happens If You Put R134a in an R12 System?
- Manitowoc Control Board Replacement
- How to Remove Continental Refrigerator Electrical Controls for Authorized Technicians
- Continental Refrigerator Error Codes & Resolutions for Authorized Technicians
- R134a Pressure Chart for Refrigerators, Prep Tables & More
- Manitowoc Ice Machine Installation for Authorized Technicians
- Ice-O-Matic Timer Adjustment
- How to Adjust a Kolpak Walk-In Door Sweep
- Replacing a Kolpak Walk-In Freezer Door Heater Wire
- Adjusting Kolpak Walk-In Cooler Door Hinges & Closers
- Replacing a Kolpak Walk-In Door Gasket & Handle
- Kolpak Walk-In Cooler Installation
- What Pressure Should R404a Run at on a Cooler?
- What is R134a Replacement?
- Manitowoc Ice Training Resources for Technicians
- How to Conduct Diagnostics on Delfield Specification Line
- How to Replace a Delfield Specification Line Touchscreen
- How to Change Danfoss ERC Controllers
- R12 to R134a Conversion Chart & Formula
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Equipment Shutdown Procedures
- Garland Grill Shutdown and Startup Procedure
- Convotherm Mini Combi Shutdown and Startup Procedures
- Manitowoc Ice Machine Shutdown and Startup Procedures
- Long Term Shutdown of Randell Preparation Tables and Freezers
- Nieco Broiler Long Term Shutdown and Startup Procedures
- Blodgett Convection Oven Long Term Shutdown
- Blodgett Combi Oven Long Term Shutdown Procedure
- APW Wyott, Bakers Pride & Star Brands Equipment Shutdown Procedures
- Pitco Fryer Shutdown Procedure
- Ultrafryer Shutdown procedure
- ANETS Fryer Shutdown Procedure
- Henny Penny McDonalds LOV Fryer Long Term Shutdown
- Henny Penny Long Term Fryer Shutdown
- ShutDown procedure for AccuTemp Evolution Steamer
- AccuTemp Accu-Steam Griddle shutdown procedure
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Hot Side
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- PST/PGT/PSC Star Sandwich Grill Troubleshooting for Technicians
- How to Run PGT/PCS/PSC/PST Star Sandwich Grill Diagnostics
- Removing & Replacing a Garland SIT Thermocouple
- Garland SIT Knob Alignment & Calibration
- Checking a Garland SIT Control Safety Valve
- Garland SIT Control Adjustment & Replacement
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- Deep Fryer Hi Limit Replacement Instructions
- How to Diagnose a Deep Fryer Thermostat
- Deep Fryer Thermostat Calibration Instructions
- Deep Fryer Thermostat Replacement Instructions
- How to Set a Garland Fryer Temperature
- Dormont Installation Guide for Technicians
- How to Test and Replace the Gas Safety Valve on a Pitco Fryer
- How To Light Commercial Gas Appliances
- How To Convert Appliances From Natural Gas To Propane
- Frymaster Tech Training - Troubleshooting a Fryer with an MIB
- Frymaster Tech Training - MIB Operation on an Automatic Filter Fryer
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- Removing the UI Board from an Ovention Matchbox 1718: Tech Tips
- Removing the SD Card from an Ovention Matchbox 1718: Tech Tips
- Removing the LCD Screen from an Ovention Matchbox 1718: Tech Tips
- Resetting the High Limit on an Ovention Matchbox 1718: Tech Tips
- How to Light a Commercial Gas Oven?
- Dormont Installation Guide for Technicians
- How To Adjust Commercial Oven Door Hinges?
- How To Light Commercial Gas Appliances
- How To Convert Appliances From Natural Gas To Propane
- Blodgett Combi Error Codes for Authorized Technicians
- Blodgett Oven Door Adjustment
- Lincoln Pizza Oven Repair & Installation for Authorized Technicians
- Lincoln Impinger Pizza Oven Parts Diagram
- Changing the Direction of the Conveyor on a Star Ultra Max Conveyor Oven
- Water Column to PSI Conversion Chart & Formula
- Removing & Replacing a Garland SIT Thermocouple
- Garland SIT Knob Alignment & Calibration
- Checking a Garland SIT Control Safety Valve
- Garland SIT Control Adjustment & Replacement
- Show all articles ( 4 ) Collapse Articles
- Deep Fryer Hi Limit Replacement Instructions
- How to Diagnose a Deep Fryer Thermostat
- Deep Fryer Thermostat Calibration Instructions
- Deep Fryer Thermostat Replacement Instructions
- How to Set a Garland Fryer Temperature
- Removing the UI Board from an Ovention Matchbox 1718: Tech Tips
- Removing the SD Card from an Ovention Matchbox 1718: Tech Tips
- Removing the LCD Screen from an Ovention Matchbox 1718: Tech Tips
- Resetting the High Limit on an Ovention Matchbox 1718: Tech Tips
- How to Light a Commercial Gas Oven?
- How to Check Inlet Gas Pressure
- Dormont Installation Guide for Technicians
- How To Adjust Commercial Oven Door Hinges?
- How to Test and Replace the Gas Safety Valve on a Pitco Fryer
- How To Light Commercial Gas Appliances
- How To Convert Appliances From Natural Gas To Propane
- Blodgett Combi Error Codes for Authorized Technicians
- Blodgett Oven Door Adjustment
- Lincoln Pizza Oven Repair & Installation for Authorized Technicians
- Lincoln Impinger Pizza Oven Parts Diagram
- PST/PGT/PSC Star Sandwich Grill Troubleshooting for Technicians
- How to Run PGT/PCS/PSC/PST Star Sandwich Grill Diagnostics
- Changing the Direction of the Conveyor on a Star Ultra Max Conveyor Oven
- Water Column to PSI Conversion Chart & Formula
- Removing & Replacing a Garland SIT Thermocouple
- Garland SIT Knob Alignment & Calibration
- Checking a Garland SIT Control Safety Valve
- Garland SIT Control Adjustment & Replacement
- Frymaster Tech Training - Troubleshooting a Fryer with an MIB
- Frymaster Tech Training - MIB Operation on an Automatic Filter Fryer
- Frymaster Series 35 Troubleshooting guide
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How to Resolve the “HA” Error Code on Perlick Bar Coolers
Perlick is known for its bar refrigerators that keep wine, beer, and other drinks cool and at the ready.
Sometimes, though, things go awry and the “HA” error code appears.“HA” is the unit’s code to indicate a temperature excursion within the cooling compartment where beverages are stored.
When the temperature exceeds the preset threshold for 30 minutes, the “HA” code appears.Higher than desired temperatures can be caused by a variety of things. First, and simplest, loading warm product into a cooler can elevate temperatures inside the cooling compartment. In this case, wait 24 hours for the product to chill and recheck the temperature.
Also consider moving larger items stored inside the cooler to ensure none are blocking the incoming cool air.Check the air temperature around the unit. If the ambient air temperature is hot or recently has changed dramatically, the temperature of the cooling compartment may be affected. This could happen if the cooler is near a heating vent or other equipment that is exhausting hot air onto the unit, or if it is installed in a sunny location. Notably, it also can occur when ambient temperatures drop significantly, upsetting the temperature probes and causing the HA light to blink.Also notice how often the door to the unit is opened. Frequent or prolonged opening reduces cooling.If none of those issues are evident, look at the unit itself.
Ask: Does the door close completely? Check the door gasket seal. Place a dollar bill between the seal and the unit. When you withdraw it, there should be a slight drag. Do this all along the entire seal. If it slips out without that pull, either replace the gasket or try to remagnetize the seal.Are the door tracks clean? Wipe off debris and dirt, and periodically lubricate the tracks for a smooth seal.Has frost built up on the rear of the unit? If so, the door probably has been left open for an extended time, causing the moisture to adhere to the evaporative coil and preventing cool air from flowing easily into the cooling compartment.
Unplug the unit for 24 to 36 hours as it defrosts. Afterward, turn it back on and check the temperature inside the cooler two hours later.Is the thermostat set properly? Perlick’s units are set for an internal temperature of about 36°F. (The ideal temperature for draft beer, according to Perlick, is 36° to 38°F.) Use the set button on digital thermostat to reset the temperature.Is the condenser clean? If not, brush it off. It should be cleaned every three months with a soft bristle brush and vacuum to remove dust and lint. Is the louvered plate clear of obstruction? This can cause heat to build up inside the unit.Does the interior light turn off when the door is closed? The LED light in the upper front of the unit turns on with a rocker switch. For the commercial back bar sliding door SDB and SDP series, the switch is just behind the LED on the inside of the frame, on the same side as the compressor. Test what happens when the switch is depressed.The tips here are valid for Perlick refrigerators, but also apply to virtually any refrigerator when the cooling compartment isn’t cool.