Avantco 178AU27FHC User manual

User Manual
www.AvantcoRefrigeration.com 1
Commercial Refrigerators and Freezers
User Manual
Undercounter Refrigerators and Freezers
178AU27FHC, 178AU27RHC, 178AU48FHC, 178AU48RHC,
178AU60FHC, 178AU60RHC, 178AU72RHC
Worktop Refrigerators and Freezers with Backsplash
178AWT27FHC, 178AWT27RHC, 178AWT48FHC, 178AWT48RHC,
178AWT60FHC, 178AWT60RHC, 178AWT72RHC 01/2023

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Contents
Warning............................................................................................... 3
Installation .......................................................................................... 4
Safety / Warning ................................................................................. 7
Operation / Maintenance ................................................................... 8
Troubleshooting.................................................................................. 9
Please read the manual thoroughly prior to equipment
set-up, operation, and maintenance.
NOTE: Save these instructions for future reference.

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Warning
DANGER – RISK OF FIRE OR EXPLOSION. FLAMMABLE REFRIGERANT USED. TO BE REPAIRED ONLY BY
TRAINED SERVICE PERSONNEL. DO NOT PUNCTURE REFRIGERANT TUBING.
PELIGRO - RIESGO DE INCENDIO O EXPLOSION. REFRIGERANTE INFLAMABLE UTILIZADO. PARA
SER REPARADO SOLAMENTE POR PERSONAL DE SERVICIO CALIFICADO. NO PINCHAR LA TUBERÍA
REFRIGERANTE.
DANGER – RISQUE DE FEU OU D’EXPLOSION. LE FRIGORIGÈNE EST INFLAMMABLE. CONFIER LES
RÉPARATIONS À UN TECHNICIEN SPÉCIALISÉ. NE PAS PERFORER LA TUBULURE CONTENANT LE
FRIGORIGENE.
CAUTION – RISK OF FIRE OR EXPLOSION. FLAMMABLE REFRIGERANT USED. CONSULT REPAIR
MANUAL / OWNER’S GUIDE BEFORE ATTEMPTING TO SERVICE THIS PRODUCT. ALL SAFETY
PRECAUTIONS MUST BE FOLLOWED.
ATENCION - RIESGO DE INCENDIO O EXPLOSIÓN. REFRIGERANTE INFLAMABLE UTILIZADO. CONSULTE
EL MANUAL DE REPARACIÓN / GUÍA DEL PROPIETARIO ANTES DE INTENTAR DAR SERVICIO A ESTE
PRODUCTO. DEBEN CUMPLIR CON TODAS LAS PRECAUCIONES DE SEGURIDAD.
ATTENTION – RISQUE DE FEU OU D’EXPLOSION. LE FRIGORIGÈNE EST INFLAMMABLE. CONSULTER LE
MANUEL DU PROPRIÉTAIRE / GUIDE DE RÉPARATION AVANT DE TENTER UNE RÉPARATION. TOUTES LE
MESURES DE SÉCURITÉ DOIVENT ÊTRE RESPECTÉES.
CAUTION – RISK OF FIRE OR EXPLOSION DUE TO PUNCTURE OF REFRIGERANT TUBING; FOLLOW
HANDLING INSTRUCTIONS CAREFULLY. FLAMMABLE REFRIGERANT USED.
ATENCION - RIESGO DE INCENDIO O EXPLOSIÓN DEBIDO A LA PERFORACION DE LA TUBERÍA
REFRIGERANTE; SIGA LAS INSTRUCCIONES DE MANIPULACIÓN CON CUIDADO. REFRIGERANTE
INFLAMABLE UTILIZADO.
ATTENTION – RISQUE DE FEU OU D’EXPLOSION SI LA TUBULURE CONTENTANT LE FRIGORIGÈNE
EST PERFORÉE; SUIVRE LES INSTRUCTIONS DE MANUTENTION AVEC SOIN. LE FRIGORIGÈNE EST
INFLAMMABLE.
CAUTION – RISK OF FIRE OR EXPLOSION DUE TO FLAMMABLE REFRIGERANT USED. FOLLOW
HANDLING INSTRUCTIONS CAREFULLY IN COMPLIANCE WITH LOCAL GOVERNMENT REGULATIONS.
ATENCIÓN – RIESGO DE INCENDIO O EXPLOSIÓN DEBIDO A REFRIGERANTE INFLAMABLE UTILIZADO.
SIGA LAS INSTRUCCIONES DE MANIPULACIÓN CON CUIDADO CONFORME A LAS REGLAS DE LA
MUNICIPALIDAD.
ATTENTION – RISQUE DE FEU OU D’EXPLOSION SI LE FRIGORIGÈNE EST INFLAMMABLE. SUIVRE
LES INSTRUCTIONS DE MANUTENTION AVEC SOIN CONFORMÉMENT AUX RÈGLEMENTATION
GOUVERNEMENTALE LOCAUX.

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Installation
Please read this manual thoroughly prior to equipment set-up, operation, and maintenance.
This unit is intended for use in a temperature-controlled environment less than 75 degrees Fahrenheit
and 60% relative humidity. Malfunction due to improper conditions is not covered under warranty.
IMPORTANT!!! PLEASE READ BEFORE INSTALLATION:
• If the shelf has a raised lip, the lip needs to be installed facing up towards the rear of the cabinet to
promote proper air flow. Failure to install the shelves properly is considered user error and is not
covered by warranty.
• If the unit has recently been transported on its side, please let unit stand still for a minimum of 24
hours before plugging it in.
• Make sure that the unit has reached the desired temperature before loading the unit with products.
This unit is meant for keeping cold products cold, not chilling warm products.
• Make sure that there is proper ventilation around the unit in the area where it will operate.
• Make sure all accessories are installed (i.e., shelves, shelf clips, casters) before plugging the unit
in.
• Do not attempt to remove or repair any component of the unit. Consult an authorized service
technician for servicing / repair.
• Do not sit / stand inside the unit.
• Please read through the manual in its entirety.
• This unit is designed to perform in a temperature-controlled environment at 60% relative humidity.
The unit should be located away from doors, air ducts, and fans that could disrupt airflow and
negatively impact performance.
Cabinet Location Guidelines
• Install the unit on strong and leveled surfaces.
a. If the surface is uneven, the unit may be noisy.
b. The unit may malfunction if the surface is uneven.
• Install the unit in an indoor, well-ventilated area.
a. For best performance, please maintain clearance of 4” on the back of the unit.
b. Brackets should be attached on the back of the unit.
c. Do not use outdoors. For indoor use only.
d. Avoid direct sunlight.
• Avoid installation in a high humidity and / or dusty area.
a. Humidity above 60% can cause the unit to rust, collect condensation, and decrease
efficiency.
b. Dust collected on condenser coil will cause unit to malfunction.
c. Malfunction due to temperatures above 75 degrees Fahrenheit, humidity above 60%, or
improperly maintained condenser coil will void the warranty.

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Temperature Controls
• Refrigerant LED - Compressor is on
• Fan LED - Fan is on
• Defrost LED - Defrost cycle is running
• Select a location away from heat and moisture-generating equipment.
a. Ambient temperatures above 75 degrees Fahrenheit may cause the compressor to
malfunction.
b. The unit should not be used in areas over 90 degrees Fahrenheit.
c. Malfunction due to ambient temperatures above 75 degrees Fahrenheit will void warranty.
d. Do not install the unit inside a closet or alcove.
• For optimal performance, 3” of clearance is required around all louvered or vented panels to allow
for proper air flow.
a. For your convenience, a set of brackets is included to prevent this unit from being pushed
up against a wall.
b. Component failure due to improper installation is not covered under warranty.
Electrical
• Please ensure that the required voltage is being supplied at all times.
• The unit should be plugged into a grounded and properly-sized electrical outlet with appropriate
over-current protection. Please refer to the electrical requirements on the unit's nameplate.
• The unit should have its own dedicated outlet.
• Do not use extension cords.
• Ensure the unit is not resting on or against the electrical cord.
• If the unit is not in use for a long period of time, please unplug the unit from the outlet.
• To avoid shock and fire hazards, do not plug in or unplug the unit with wet hands.
• After unplugging the unit, wait at least 10 minutes before plugging it back in. Failure to do so could
cause damage to the compressor.
Functions
ADJUSTING THE TEMPERATURE
Your new refrigerator or freezer is already factory-set to run at optimum temperatures for food safety
and should require no adjustments.
Refrigerators are set to cycle between a minimum temperature of 33 degrees Fahrenheit and a
maximum temperature of 40 degrees Fahrenheit.
Freezers are set to cycle between a minimum temperature of -5 degrees Fahrenheit and a maximum
temperature of 2 degrees Fahrenheit.

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Prg
mute
Set
aux
def
Freezer Control (phased out in 2022)
set
mute
Refrigerator and Freezer Control (2022 onwards)
Adjusting the temperature changes the minimum temperature your unit will run at. Your unit will not
run constantly at this setting. To change it, follow these instructions:
Digital Control Units
• Hold “SET” for 1 sec. The display will flash the current minimum temperature.
• Use the arrow buttons to adjust the minimum temperature you want it to run at.
• Press “SET” again to save your settings.
Always remember to calculate the differential if you change the minimum temperature setting.
The cabinet temperature will fluctuate up to +7 degrees over your set minimum temperature as
the compressor runs and shuts off. Setting the temperature too high will result in unsafe maximum
temperatures.
Loading Product
Before loading shelves, please be sure that all shelf clips are completely fastened in their correct
locations. It is important that all shelves rest completely level before stocking your cabinet with
product. In order to maintain correct air flow inside the unit, please be sure to leave 2-4" of space
between the back wall and stored product. Blocking the evaporator fans will result in a warmer
cabinet temperature and ultimately compressor failure.
Running a Manual Defrost Cycle
This unit is pre-programmed to run automatic defrost cycles at preset intervals. However, if you
would like to run a manual defrost cycle at any time, please follow the steps below:
Freezers produced before 2022: Press the defrost button (“def” and down arrow) for approximately
5 seconds. Repeat to stop the defrost cycle.
Refrigerators and Freezers: Press the defrost button (snowflake symbol and down arrow) for
approximately 3 seconds. Repeat to stop the defrost cycle.

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Defrost System
Refrigerator coils are kept below the freezing point (32 degrees Fahrenheit). During compressor
downtime, the evaporator fan continues to circulate air through the evaporator coil. This air
circulation raises the coil temperature above the freezing point, melting any accumulated frost.
Run-off water is drained into the evaporator pan and evaporated. Automatic defrost timers
automatically initiate at pre-set intervals and for a pre-determined duration.
Safety / Warning
Please pay close attention to the safety notices in this section. Disregarding these notices may lead
to serious injury and / or damage to the unit.
Attention
• To minimize shock and fire hazards, be sure not to overload outlet. Please designate one outlet for
your unit.
• Do not use extension cords.
• Do not put your hands under the unit while it is being moved.
• When the unit is not in use for a long period of time, please unplug the unit from the outlet.
• After unplugging the unit, wait at least 10 minutes before plugging it back in. Failure to do so could
cause damage to the compressor.
Unplug Cord
• To minimize shock and fire hazards, please do not plug or unplug the cord with wet hands.
• During maintenance and cleaning, please unplug the unit.
Proper Grounding Required
• To minimize shock and fire hazards, make sure that the unit is properly grounded.
Warning
• Do not attempt to remove or repair any component unless instructed by factory.
• Make sure that the unit is not resting on or against the electrical cord and plug.
• To minimize personal injury, do not hang on the doors.
• Do not store any flammable and explosive gas or liquids inside the unit.
• Do not attempt to alter or tamper with the electrical cord.

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Operation / Maintenance
WARNING: DISCONNECT POWER CORD BEFORE CLEANING ANY PARTS OF THE UNIT.
NOTE: We strongly recommend that any servicing be performed by an authorized service technician.
Loading Product
• Make sure there is at least 4” of clearance from the evaporator.
• Ensure all shelves are sitting level and properly secured before loading products.
• Do not store flammable and explosive gas or liquids inside the unit.
Cleaning the Condenser Coil
• For efficient operation, keep the condenser surface free of dust, dirt, and lint.
• We recommend cleaning the condenser coil at least once per month.
Cleaning the Fan Blades and Motor
• If necessary, clean the fan blades and motor with a soft cloth.
• If it is necessary to wash the fan blades, cover the fan motor to prevent moisture damage.
Cleaning the Interior of Unit
• When cleaning the cabinet interior, use a solvent of warm water and mild soap.
• Do not use steel wool, caustic soap, abrasive cleaners, or bleach that may damage the interior
finish.
• Wash door gaskets on a regular basis, preferably weekly. Simply remove door gasket from the
frame of the door, soak in warm water and soap for thirty (30) minutes, dry with soft cloth, and
replace.
• Check door gaskets for proper seal after they are replaced.
• Periodically remove the shelves and pilasters from the unit and clean them with mild soap and
warm water. To remove the pilasters, first remove the shelves and shelf brackets. Then, simply lift
the pilaster up and out.

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A dusty condenser may lead to high energy consumption, less cooling effectiveness, and
compressor damage.
Condenser Coil Cleaning Instructions:
The condenser coil is located at the bottom behind the panel.
1. Disconnect the electrical power from the unit.
2. Remove the front cover and base cover with a screwdriver.
3. Using a soft brush and / or vacuum, remove the dirt, lint, etc. from the finned condenser coil in a
vertical direction.
4. Clean the condenser with a commercial condenser coil cleaner, available from any kitchen
equipment retailer. Ex. Nobel Chemical Tech Line
5. After cleaning, straighten any bent condenser fins with a fin comb.
6. When finished, be sure to reinstall the front cover and base cover.
7. Reconnect the electrical power to the unit.
Condensing Units Run for Long Periods of Time
Excessive amount of warm product placed in
cabinet. Allow adequate time for product to cool down.
Prolonged door opening or door ajar. Ensure doors are closed when not in use. Avoid
opening doors for long periods of time.
Door gasket(s) not sealing properly.
Ensure gaskets are snapped in completely. Remove
gasket and wash with soap and water. Check
condition of gasket and replace if necessary.
Dirty condenser coil. Clean the condenser coil.
Evaporator coil iced over.
Unplug unit and allow coil to defrost. Make sure
thermostat is not set too cold. Ensure that door
gasket(s) are sealing properly.
Compressor Not Running
Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.
Power cord unplugged. Plug in power cord.
Thermostat set too high. Set thermostat to lower temperature.
Cabinet in defrost cycle. Wait for defrost cycle to finish.
Troubleshooting

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Cabinet Temperature is too Warm
Thermostat set too warm. Set thermostat to lower temperature.
Airflow blocked.
Re-arrange product to allow for proper air flow.
Make sure there is at least four inches of clearance
from evaporator.
Excessive amount of warm product placed in
cabinet. Allow adequate time for product to cool down.
Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.
Dirty condenser coil. Clean the condenser coil.
Evaporator coil iced over. Ensure doors are closed when not in use. Avoid
opening doors for long periods of time.
Low refrigerant levels. Contact a service technician to check refrigerant
levels.
Door is slightly ajar. Make sure door is completely closed.
Condensation is Collecting on the Cabinet and / or Floor
Gasket is not sealing properly. Clean, repair, or replace the gasket as necessary.
Relative humidity is above 60%. Move unit to area below relative humidity or lower
humidity level.