HVACR Service Call: Frozen Evaporator Coil Walk In Cooler (Frozen Evaporator Coil Diagnosis/Repair)
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- เผยแพร่เมื่อ 28 ส.ค. 2024
- HVACR Service Call: Frozen Evaporator Coil Walk In Cooler (Frozen Evaporator Coil Diagnosis/Repair) #HVAC #REFRIGERATION #JUMPERMANTECH
6 Causes of a Frozen Evaporator Coil
1. Lack of Airflow
As stated above, the evaporator coils absorb heat from the air. But if they don’t have enough heat to absorb, the condensation on the coils can freeze. Low airflow can be caused by dozens of problems within the AC system, such as a malfunctioning blower fan, dirty air filters, or even damaged ductwork.
2. Dirty Air Filter
A dirty air filter creates the same airflow problem mentioned above, preventing the evaporator coils from absorbing the necessary amount of heat from the air to function properly. Dirty air filters can also spread dirt and clog up other parts of your system, including the coils themselves.
3. Dirty Evaporator Coils
If your evaporator coils collect too much dirt or debris, the heat exchange process can become obstructed. Dirty coils will be unable to properly absorb the heat from the air, causing the condensation to become too cold and freeze.
4. Refrigerant Problems
Ironic though it may seem, having low refrigerant in your system can actually lead to frozen evaporator coils. Low refrigerant causes the system to overwork, which can lead to condensation on the coils freezing. AC units work on a closed system, meaning refrigerant doesn’t simply run out. Therefore, if you have low refrigerant, the problem is either a refrigerant leak in your system or an insufficient charge.
5. Outdoor Temperature Is Too Low
Similar to how the coils freeze when there is restricted airflow, they can also freeze if the temperature of the air your system is trying to cool is too low. Since the coils work by absorbing heat from the air, the lack of such heat can lead to condensation on the coils freezing over.
6. Clogged Drainpipe
Condensation forming on the evaporator coils is part of normal operation. However, if the drain pipe is clogged or otherwise hindered, too much condensation may develop on the coils, which can then freeze.
Call a Professional:
While there are several remedies you can perform on your own to alleviate frozen evaporator coils, you may not be aware of other issues going on with your AC unit. Trusting the job to a licensed professional not only gives you the peace of mind that the work is done correctly, but also you can be confident knowing that they will catch any surrounding issues as well.
How Preventative Maintenance Can Help:
While regular wear and tear is part of any AC unit’s lifespan, preventative maintenance is one of the most effective ways to ensure your system works properly. This includes changing your air filters regularly (every 60-90 days, as a general guide) and having a professional technician inspect and tune up your system - at least annually, but we recommend having this done before the summer and before the winter months each year.
Love the vids bro. They motivate me everyday going to school and working my way towards that journeymen’s. Keep up the good work!
Thank you! I'm glad to hear that my videos motivate you. Stay tuned for new videos every week & good luck 🔧⚡️
Aspiring refrigeration tech here. You’ve helped me in more ways then you can imagine brother 🔥
I'm very glad to hear that my friend 🙏 Thank you! Stay tuned for new videos every week🔧⚡️
Enjoy the videos brother!
one trick I learned thought id share for set screw tightening:
is going 1turn tight
then one turn back
then one turn tight
one turn back
and a final turn tighter
every time it'll get a little further and tighter
Cheers!
I’m wondering why they need to cool trash? Seems like a waste.
But great troubleshooting.
Keep it up.🤙
From what I've seen, most larger type buildings that have restaurants as part of the building, all have air conditoned garbage disposal rooms. I believe it is code for New York City. Large infestations out here from waste. Thank you! Stay tuned for new videos every week🔧⚡️🤙
I kept on bitting my teeth whenever u were fighting to put out the motor😂😂😂 thank you put no hole in the coil🙂. Once again thanks for the effort towards the trade🤝
Great Video, Great Job. Nice Work. Thank you for sharing
Thank you! Stay tuned for new videos every week🔧⚡️
great work JMT, thank you always! ⭐️💫🙌🏼
You're very welcome & thank you!! 🔧⚡️
Full knowledge in your videos.Thanks
Awesome Video JMT!
Thank you! Stay tuned for new videos every week🔧⚡️
Good job
Thank you! Stay tuned for new videos every week🔧⚡️
That's a beautiful thing!
Facts! Thanks for watching & stay tuned for new vids every week! 🔧⚡️🤙
Don't you love it when you get those easy ones? :D
Definitely. Easy money! Stay tuned for new videos every week🔧⚡️
Nice job jmt
Thank you!! 🔧⚡️
If your box temp was in the 50's and your suction pressure was like 40, (saturation like 5f) I would check that the valve was feeding properly. If the suction line wasn't freezing then super heat out of the evap is well over 30 degrees. Im not saying I would want a frozen suction line, but to me that would seem like a restriction somewhere. I would suspect another underlying issue with that system.
if the box is 50 his pressure at start up should of been 70-80 for 404A his valve is starving
At 1 minute into the video I can agree with you but I would not state the reason it iced up is because of the bad fan
Great job as always. Just wanted to thank you for another great video and inspiration. I got the exact some tools you have to do my job nut driver is amazing. Keep up the great work. I would love to do some service calls with you in the future.
if the fans are working , and drain is not clogged what would be some of the issues?
Love the Vids. Do you quote and bill the customer or do you quote and get paid immediately upon completion?
Why are they cooling that storage for ?
I believe it is code for New York City to have an air conditioned garbage disposal space. Thanks for watching! Stay tuned for new videos every week🔧⚡️
How do we know what the pressures of a refrigerant?
Why ac a garbage room
Very normal out here in the city. All garbage rooms have AC year round. Thanks for watching!
Probably to keep stuff from smelling
How's that 902 holding up man?
Honestly love that meter. I heard some people having issues with it but I haven't experienced that. Thanks for watching!
10:09 lmao
I just heard that 😂😂😂 Aye Miguel!! Haha & I know exactly who said that by hearing the voice. Thanks for watching! Stay tuned for new videos every week🔧⚡️
Hello my friend, how many thousands of dollars do you earn per month?