Why is My Beer Dispenser Getting Too Cold?

Aug 07, 2023, 13:28pm

The beer dispenser is a very useful utensil for having your own bar system at home, but it is not uncommon to notice certain breakdowns on this device. To avoid possible failures, maintenance is essential. Since this device circulates beer, a leak can hinder its operation, it is one of the common failures on this machine.

When the output beer dispenser is too cold, it will be necessary to check:

  • the electronic card
  • the fan
  • the temperature probe

Crafting the perfect pour with your home or commercial beer dispenser is an art. Striking that balance where your favorite brew is served at just the right temperature can elevate the entire experience. But what happens when your beer dispenser seems to go overboard and gets too cold? This article will delve into why this might be happening and offer some solutions to resolve it.

Why is My Beer Dispenser Getting Too Cold?

1. Incorrect Temperature Setting

The simplest explanation for your beer getting too cold could be that the temperature of the dispenser has been set lower than required. This is a common oversight, especially with new machines or following a power outage.

Solution: Review your dispenser’s user manual to understand how to check and adjust the temperature. Beer is typically best served between 38-44 degrees Fahrenheit (3-7 degrees Celsius), but this can vary depending on the beer type.

2. Faulty Thermostat

The thermostat in your beer dispenser controls the temperature. If it’s malfunctioning, it could cause the dispenser to cool the beer more than necessary, leading to overly chilled beer or even frozen lines.

Solution: A faulty thermostat generally requires a replacement. This task can be complex, so it’s advised to get a professional’s help to replace the thermostat accurately.

3. Malfunctioning Temperature Probe

The temperature probe senses the internal temperature and communicates it to the system to maintain the desired temperature range. If the probe is defective, it may send incorrect temperature readings, causing the dispenser to overcool.

Solution: To check if the temperature probe is functioning correctly, you can test it using a multimeter or get a professional’s assistance. If the probe is found to be faulty, replacing it should correct the issue.

4. Poor Insulation

If the insulation within the beer dispenser is compromised, it could lead to an overworking cooling system, causing the beer to become too cold.

Solution: Examine the insulation for any signs of wear and tear. If it’s degraded, you’ll likely need to replace it. Since this can be a complex job, it’s recommended to hire a professional.

5. Environmental Factors

If your beer dispenser is located in a particularly cold environment, it may struggle to regulate its internal temperature effectively, leading to the beer getting too cold.

Solution: Consider relocating your dispenser to an area with a more stable, warmer ambient temperature, away from any drafty windows or doors.

Why is My Beer Dispenser Getting Too Cold?


To find out if the electronic card is defective or meets the requirements, it is necessary to check its input and output voltages.

  • Dismantle the beer dispenser from below, then remove the protective cover that opens access to the electronic power board.
  • Locate the thermoelectric module connected to the electronic board and its connector. It can be identified by its connection to 2 electrical wires.
  • Set the multimeter to 20 VDC and place the two multimeter test leads on the two ends of the connector.
  • If the electronic power board is receiving the correct power but the output voltages are incorrect, the board is faulty.


When a fan fails, it is often due to excessive heat or dust overload blocking it.

  • Make sure the fan is clean and free of dust or other debris that might prevent it from spinning.
  • Then remove the fan power connector on the control board.
  • Set your multimeter to 20VDC, then plug in and turn on the brewer.
  • Measure the fan supply voltage by putting 2 contact tips on the connector tips. If you cannot find the voltage, you will have to replace the power electronic board.


There’s nothing quite as refreshing as a perfectly chilled beer, but when your beer dispenser starts overcooling, it can mar the entire experience. Several factors can lead to this issue, including faulty thermostats, malfunctioning temperature probes, or incorrect temperature settings. Identifying the potential issue is the first step to finding the right solution. Remember, when in doubt, it’s always safer to consult with a professional to prevent any unnecessary damage to your dispenser. Here’s to enjoying your beer at the perfect temperature!