User Manual
www.AvantcoRefrigeration.com
02/2024
178ZUC27FHC
178ZUC27FWMS
178ZUC27RHC
178ZWT27FHC
178ZWT27FWMS
178ZWT27RHC
Base Models:
Z Series
Undercounters/ Worktops
Please read the manual thoroughly prior to equipment setup, operation, and maintenance.
Note:
178ZUC27FHC
178ZUC27FHC
178ZUC27RWMS
178ZUC36FHC
178ZUC36FWMS
178ZWT27RWMS
178ZWT36FHC
178ZWT36FWMS
178ZUC36RHC
178ZUC36RWMS
178ZUC48FHC
178ZWT36RHC
178ZWT36RWMS
178ZWT48FHC
178ZUC48FWMS
178ZUC48RHC
178ZUC48RWMS
178ZWT48FWMS
178ZWT48RHC
178ZWT48RWMS
178ZUC60FHC
178ZUC60FWMS
178ZUC60RHC
178ZWT60FHC
178ZWT60FWMS
178ZWT60RHC
Undercounter
Worktop
178ZUC60RWMS
178ZUC72RHC
178ZUC72RWMS
178ZWT60RWMS
178ZWT72RHC
178ZWT72RWMS
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User Manual
www.AvantcoRefrigeration.com
Undercounter & Worktop Refrigerators & Freezers
Table of Contents
Warnings ..............................................................................................................................3
Installation ...........................................................................................................................4
Cabinet Location Guidelines ..........................................................................................4
Electrical ..............................................................................................................................5
Temperature Controls ......................................................................................................5
Controller ............................................................................................................................. 6
Safety / Warning ................................................................................................................7
Operation / Maintenance ................................................................................................7
Cleaning ...............................................................................................................................8
Troubleshooting .................................................................................................................9
NEMA 5-15
3029079 3029079
Please read handbook before using
equipment and keep for future use.
NOTICE – USE THIS APPLIANCE FOR ITS INTENDED PURPOSES AS DESCRIBED IN THIS USER MANUAL.
A PROPERLY MAINTAINED UNIT WILL GIVE YOU MANY YEARS OF TROUBLE-FREE SERVICE.
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Undercounter & Worktop Refrigerators & Freezers
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.
ATENCION – 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.
Warnings
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Undercounter & Worktop Refrigerators & Freezers
This unit is intended for use in a temperature-controlled environment less than 75 degrees
Fahrenheit and 60% relative humidity.
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 the unit stand upright 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 no hang on doors or sit inside the unit. Do not sit or stand on top of the unit.
• Please read through the manual in its entirety.
• This unit should be located away from doors, air ducts, and fans that could disrupt airflow and negatively
impact performance.
• This unit is designed to perform in a temperature-controlled environment at 60% relative humidity.
Installation
• Install the unit on strong and leveled surfaces.
- If the surface is uneven, the unit may be noisy.
- The unit may malfunction if the surface is uneven.
• Install the unit in an indoor, well-ventilated area.
- Brackets should be attached on the back of the unit.
- Do not use outdoors. For indoor use only.
- Avoid direct sunlight.
• Avoid installation in a high humidity and/or dusty area.
- Humidity above 60% can cause the unit to rust, collect condensation, and may decrease eciency.
- Dust collected on the condenser coil will cause the unit to malfunction.
• Select a location away from heat and moisture-generating equipment.
- Ambient temperatures above 75 degrees Fahrenheit may cause the compressor to malfunction.
- For optimal performance, this unit should not be used in environments with ambient temperatures
exceeding 75 degrees Fahrenheit.
- The unit should not be placed in areas with an ambient temperature over 90 degrees Fahrenheit.
- Equipment malfunctions due to ambient temperatures above 90 degrees could void the warranty.
- Do not install this unit inside a closet or alcove.
Cabinet Location Guidelines
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User Manual
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Undercounter & Worktop Refrigerators & Freezers
• 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 projection. Please refer to the electrical requirements on the unit’s nameplate.
• The unit should have its own dedicated outlet.
• Do not use extention 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.
• In the event of damage to the electric wires or plug, please contact the after-sales service. Do not at-
tempt to repair it yourself.
• If the voltage is unstable, please choose the suitable automatic voltage regulator.
Electrical
Adjusting the Temperature
Your new refrigerator or freezer is already factory set to run at optimum temperature 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.
Adjusting the temperature changes the minimum temperature your unit will run at. Your unit will not run con-
stantly at this setting. To change it, follow these instructions:
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User Manual
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Undercounter & Worktop Refrigerators & Freezers
Controller
1.
Hold down the menu button for 3 seconds. At this time,
the display screen displays “--”, then background button lights
up.
2.
Select button and click. At this time, enter temperature
setting interface. The display screen displays the current set
value.
3.
Adjust the downtime temperature value used by the user pressing
4.
After the adjustment, click the menu button to return the menu selection interface.
5.
Wait for about 7 seconds. The digital display will automatically save and exit and return to the
normal display interface.
Always remember to calculate the dierential 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 o. Setting the temperature too high will result in unsafe
maximum temperatures and possible health code violations.
Your Z Series unit compressor will continue to run when the door is left ajar. After 15 minutes
of being left ajar, an audible alarm will sound. At the same time, the display board will
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:
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-o water is drained into the evaporator pan and evaporated. Freezer
coils are defrosted electrically. Automatic defrost timers automatically initiate at pre-set
intervals and for a pre-determined duration.
1.
Press and hold the menu key for 3 seconds to enter the menu selection interface. At this
time, the display screen displays “--”, then background button lights up.
2.
Click the button in the upper left corner to start manual defrosting.
3.
Wait for about 7 seconds. The digital display returns to the normal display interface.
Defrost System
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User Manual
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Undercounter & Worktop Refrigerators & Freezers
Operation / Maintenance
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.
Safety / Warning
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.
WARNING: DISCONNECT THE 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
• Ensure there is at least four inches 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.
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User Manual
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Undercounter & Worktop Refrigerators & Freezers
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 the 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 the door gasket from the
frame of the door, soak in warm water and soap for thirty (30) minutes, dry it with a soft cloth, and
replace it.
• 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.
Cleaning the Condenser Coil
A dusty condenser may lead to high energy consumption, less cooling eectiveness, and
compressor damage.
• For ecient operation, keep the condenser surface free of dust, dirt, and lint.
• We recommend cleaning the condenser coil at least once per month.
Condenser Coil Cleaning Instructions:
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: Noble 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.
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User Manual
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Troubleshooting
Problem
Possible Cause
Possible Solution
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.
Condensing units run for
long periods of time.
Excessive amount of water product 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 the doors for long periods of time.
Door gasket(s) not sealing properly.
Ensure gasket(s) 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. (Page 8)
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.
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 4" 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. (Page 8)
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.
