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Outside Condinsor Icing over at 34-35°

HarleyRob22
Community Member

‎01-01-2024 08:23 PM - edited ‎01-01-2024 08:25 PM

My downstairs condinsor unit outside is icing over like an old school freezer. It start at 35 degrees and it's now 33 degrees and it has not kicked off to turn on my aux heat. I believe the highest temp I can shut off the outside condinsor is 32 degrees. I'm worried with the outside unit being iced over it will break down. What can I do? Any suggestions? Oh and my unit runs for about 12-19 hours a day according to the history. I keep it set on 68 degrees. 

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zoeuvre
Community Specialist
Community Specialist

‎01-05-2024 01:50 PM - edited ‎01-05-2024 01:50 PM

Hi HarleyRob22, 

 

Yikes! I'm sorry to hear your downstairs condenser unit is icing over and not kicking on the auxiliary heat when the outside temperature drops below freezing, it's important to address the issue to prevent potential damage to your HVAC system. Here are a few suggestions to consider:

 

  1. Make sure the condenser unit and the area around it are not blocked by debris, leaves, snow, etc. Try to clear away any buildup that may be blocking airflow and hampering the unit’s performance.
  2. Dirty or clogged air filter reduces air flow thereby reducing the efficiency of the operation and may lead to icing over the condenser unit.
  3. The condenser unit can ice up due to the low levels of refrigerants. If you believe this may be the problem, then it is recommended to get in touch with an expert HVAC technician who can check and top-up the refrigerant if required.
  4. Icing of the condenser unit can also be due to leaks in the refrigerant lines of the vehicle. If you suspect a refrigerant leak, it is essential to have a professional technician identify and repair the leak to restore proper operation.
  5. Some systems have freeze protection controls that allow for the condenser unit not to operate when the outside temperature is too low. If your system does not have this feature, it may be an invitation to consult with an HVAC technician and ask if it is possible to add this option.
  6. You may have to manually adjust your thermostat settings to turn on the auxiliary heat when the outside temperature is close to zero degrees. Check your thermostat’s manual or reach out to the manufacturer’s support to establish the right temperature thresholds for the activation of auxiliary heat.

 

Let us know if that works.

 

Best,

Zoe

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