Duke SUBWAY Series - User Manual

Questions and Answers

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William WardJul 28, 2025
Why is my Duke SUBWAY Merchandiser cabinet too warm?
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  qandersonJul 28, 2025
  Several factors can cause your Duke Merchandiser cabinet to be too warm. It could be due to the unit not being plugged in (simply plug it in), the thermostat being set too low (adjust it to a higher setting for colder temperatures), a stuck thermostat switch (which would require replacement), a malfunctioning evaporator fan (check and repair or replace the motor), a faulty condenser fan motor (check and repair or replace the motor), a dirty condenser coil or filter (clean them), or a refrigerant leak (find, repair, and recharge the refrigerant).
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myersfrederickAug 3, 2025
Why is my Duke SUBWAY Merchandiser cabinet too cold?
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  Rachel WoodAug 3, 2025
  If your Duke Merchandiser cabinet is too cold, the thermostat might be set too high; try setting it to a lower number for a warmer temperature. Another possibility is a thermostat switch stuck in the closed position, which would necessitate replacing the thermostat.
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woodtanyaAug 8, 2025
How to fix water in the bottom of my Duke SUBWAY Merchandiser unit?
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  Teresa WrightAug 9, 2025
  If you find water in the bottom of your Duke Merchandiser unit, it could be due to a plugged drain hose (clear it) or a drain hose that is loose or disconnected from the drain pan (tighten or reconnect it).
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crystal94Aug 15, 2025
Why are all rail temperatures above 38°F in my Duke SUBWAY?
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  Renee HinesAug 15, 2025
  If all rail temperatures in your Duke Merchandiser are above 38°F, it could be due to a high ambient temperature. Try to correct the restaurant environment. It could also be caused by improper air balance in the building or a dirty condenser. In such cases, clean the condenser and possibly adjust the thermostat setting to a cooler position.
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Kristopher TranAug 21, 2025
What causes one rail temperature to be significantly warmer in Duke SUBWAY?
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  gabrielalaraAug 22, 2025
  If one rail temperature is significantly warmer than the others (more than 6°F or 3.3°C), and there's no frost accumulation on one of the channels, it may indicate poor liquid distribution. Try repositioning the drier assembly, ensuring the drier is at a 45% angle and the three cap tubes are parallel to the condensing unit base.