$49 / month O.A.C Including Install
$49 / month O.A.C Including Install

Common AC Error Codes

24 / 7 Emergency Service Available. Call Us Now: 1.844.894.6832


[BACK]
Common AC Error Codes

Posted On: March 13, 2024

Common AC Error Codes

Air conditioning (AC) systems often come equipped with error code displays to help users diagnose problems more easily. Here are some common error codes you might encounter:


  1. E1: Indicates an issue with the temperature sensor. This could mean it's faulty or disconnected.


  2. E2: Suggests a problem with the indoor unit's coil sensor.


  3. E3: Points to an issue with the fan speed. It could be that the fan motor is malfunctioning.


  4. E4: Indicates a problem with the outdoor unit's coil sensor.


  5. E5: Points to an issue with the room temperature sensor.


  6. E6: Suggests a problem with the communication between the indoor and outdoor units. This could be due to wiring issues or a faulty control board.


  7. E7: Indicates a refrigerant leakage or a refrigeration cycle issue.


  8. E8: Suggests an issue with the high-pressure switch.


  9. E9: Indicates a problem with the low-pressure switch.


  10. E0: This usually means that the unit is in standby mode or that there's no fault detected.


Keep in mind that error codes can vary depending on the make and model of your AC unit. Always refer to your unit's manual or contact the manufacturer for specific error code meanings and troubleshooting steps.



[BACK]

See What Our Customers Are Saying:

by Private User on Twintech Heating and Cooling

They came the day and time they had planned for us and were very fast and efficient! The AC works amazing and it is amazing during the heat of the summer we have already got! Thanks for everything you did for us!

by Private User on Twintech Heating and Cooling

Would recommend this company to friends and family in a heartbeat. Very professional , on time and left no mess when the job was done.

by stefany on Twintech Heating and Cooling

Great customer service. Responsive and professional. I would highly recommend Twintech, I used them previously for repair service and a new air conditioner- very satisfied.

by dianeramsden on Twintech Heating and Cooling

Our air conditioner failed. Made a call and within 15 min a technician was at our door.
The issue was fixed and many suggestions were provided.
Thanks to Mitch. Great service !

by Kazuko on Twintech Heating and Cooling

Our furnace was rattling, as soon as we put our air conditioner on this past week. We had researched looking for a company that was Registered with Better Business Bureau, and this company TwinTech, had A+ Rating. Scott, was immediately helpful via text/phone and sent his technician as soon as he was able...Mitchell/technician provided great professional service. Thank you TwinTech.
Sean and Debbie

by ANOOP on Twintech Heating and Cooling

I contacted various companies when looking to install a new furnace and I found Twintech to be transparent with their communication and approach. They had options to suit my various requirements and the price vs quality was very good. The after installation communication was also very good and they answered all queries I had.

by Private User on Twintech Heating and Cooling

My furnace broke down last month. The team was quick to respond, courteous, professional and mindful of COVID-19 concerns. I highly recommend them if you are considering replacing or servicing your HVAC equipment.

by Private User on Twintech Heating and Cooling

I was very happy with the installation and price. I would definitely recommend. Thank you Twintech.

by Dorothy on Twintech Heating and Cooling

Had furnace and air conditioning unit put in. They did an excellent job great price and everything clean as can be, I was very pleased

by Barry on Twintech Heating and Cooling

All winter I have had an issue with very little heat reaching the 2nd floor of our home. After this past winter ended I decided to look into this. I found Twintech Heating and Cooling on line and started the process. After explaining my problem I had a call form Twintech and the tech came out and walked through things with me. The problem was the heating vent pipe had been dropped down in size by someone years ago causing little heat reaching the 2nd floor. Further into checking out the older furnace and AC they found a few things not properly installed by the last install of the old furnace and also that the AC was on it's last legs. I asked for a quote and waited a few days and we decided to go ahead with Twintech. They called a few days before to set up an installation time and date. The day of the install the guys were a half hour early which was a plus. The day of the install was great, the guys worked away removing the old furnace and AC.After which they installed the new furnace and AC. After they cleaned up the basement with all their tools and scrap metal etc. they came back inside to walk thru what they did. They also tested both the furnace and cooling systems to make sure everything worked and I the customer was happy. I now have heat on the 2nd floor for next winter. The guys from Twin tech were very professional. Their work habits and knowledge of the job was excellent. Their workmanship was just excellent, it was just up there with my standards as a homeowner. I am very pleased to have chosen Twintech for my new furnace and AC.. If I had to rate this experience with Twintech this company is a 10 in my books.Product,workmanship and customer care says it all.

Related Links:
oshawa gas furnace problems, ac service call, pickering hvac prices, local ac services, ajax furnace inspection, ac repair services, whitby furnace replacement, furnace repairs pickering, oshawa hvac furnaces, central ac service, ac unit maintenance, pickering gas furnace problems, ac installation near me, ajax hvac repair, hvac repairs, ac contractors, ac repair and service, whitby furnaces, residential furnace, residential ac repair, pickering hvac furnace, pickering furnace service, pickering furnaces, oshawa furnace inspection, oshawa furnaces, nearby ac repair,


See What Our Customers Are Saying:

by Robert Rogers on Twintech Heating and Cooling

Very pleased with the professional service that TwinTech Heating and Cooling provided in replacing my furnace. I got several quotes from different service providers. Their price was excellent and they explained the features very well. We are very glad we went with TwinTech and highly recommend their services.

by Robert Mizuno on Twintech Heating and Cooling

We were new homeowners in need of a second opinion. TwinTech Heating & Cooling were Amazing and professional. Very knowledgeable and great service all around. Recommend to anyone looking for honest and reliable services. Treated with respect and care. Thank you Greg, Mitch and Bob!

by Ruth on Twintech Heating and Cooling

TwinTech is an excellent and honest company! I called them for a second opinion after being told by another company that I needed to replace my furnace. Turns out this was not the case at all! I did not need a new furnace. TwinTech did not push to make an unnecessary sale and saved me from a huge expense. Bob and Mitch were extremely professional and above all honest! I definitely recommend TwinTech!

by Anna Chin on Twintech Heating and Cooling

Amazing experience with TwinTech Heating & Cooling! Their team was professional, knowledgeable, and efficient from start to finish. They installed my new furnace quickly and left everything spotless. The technicians took the time to explain everything and made sure I was comfortable with the system before they left. Great customer service and fair pricing. I highly recommend them for anyone needing HVAC services!

by Connor Agnew on Twintech Heating and Cooling

Great experience all around. Bob was sharp and easy to talk to, and Greg handled the installation perfectly. Would hire them again in a heartbeat.

Getting Heat Pump Replaced Under Warranty Need Advice

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - August 1, 2023

Here's a step-by-step guide to ensure a smooth process: Read the Warranty: Start by reviewing your heat pump's warranty documentation. Understand what is covered under the warranty, the duration of coverage, and any specific conditions

Read More

How Heat Pumps Improve Indoor Air Quality

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - May 13, 2025

When thinking about home comfort, temperature control usually comes to mind first. But indoor air quality (IAQ) is just as important — especially for families with allergies, asthma, or other respiratory concerns. One of the most underrat

Read More

Does My AC Unit Have a Warranty?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - April 15, 2024

To check if your AC unit has a warranty, you'll need to refer to the documentation that came with the unit when you purchased it. Typically, warranties are provided by the manufacturer and cover certain parts or services for a specific period of

Read More

How your Furnace and Air Conditioner work together to keep you Comfortable?

  • SUBMITTED BY:
  • TWINTECH HEATING & COOLING
  • - April 14, 2019

Furnaces are used to generate heat and spread it throughout your home.  A furnace is connected to a duct system that will distribute heated air to the various rooms of your home, which is crucial during the colder months of the year. The h

Read More