Durham Region Air Conditioning Repair, Service and Installation
List of Whirlpool fault codes and Whirlpool error codes for all Whirlpool Air Conditioners.
CODE: UA.
RESULT: Setting error, indoor and outdoor unit abnormal.
RESULT: Setting error, indoor and outdoor unit abnormal.
CODE: E6.
RESULT: Communication malfunction.
RESULT: Communication malfunction.
CODE: PL.
RESULT: DC input voltage is too low.
RESULT: DC input voltage is too low.
CODE: PH.
RESULT: DC input voltage is too high.
RESULT: DC input voltage is too high.
CODE: F0.
RESULT: Lack of Freon or block protection.
RESULT: Lack of Freon or block protection.
CODE: P7.
RESULT: Temperature sensor malfunction of carbon fin.
RESULT: Temperature sensor malfunction of carbon fin.
CODE: UU.
RESULT: DC overcurrent.
RESULT: DC overcurrent.
CODE: P8.
RESULT: Overheat of carbon fin.
RESULT: Overheat of carbon fin.
CODE: F4.
RESULT: Break-circuit and short-circuit of outdoor condenser temperature sensor.
RESULT: Break-circuit and short-circuit of outdoor condenser temperature sensor.
CODE: F5.
RESULT: Break-circuit and short-circuit of outdoor discharge temperature sensor.
RESULT: Break-circuit and short-circuit of outdoor discharge temperature sensor.
CODE: E4.
RESULT: Discharge protection of compressor.
RESULT: Discharge protection of compressor.
CODE: F3.
RESULT: Outdoor ambient temperature sensor malfunction.
RESULT: Outdoor ambient temperature sensor malfunction.
CODE: U5.
RESULT: Current diction malfunction of complete unit.
RESULT: Current diction malfunction of complete unit.
CODE: H7.
RESULT: Sync failure.
RESULT: Sync failure.
CODE: EE.
RESULT: Storage slug. Indoor PCB malfunction.
RESULT: Storage slug. Indoor PCB malfunction.
CODE: E2.
RESULT: Anti-freezing protection.
RESULT: Anti-freezing protection.
CODE: H4.
RESULT: Overload of system.
RESULT: Overload of system.
CODE: H6.
RESULT: No motor of indoor unit feedback.
RESULT: No motor of indoor unit feedback.
CODE: F2.
RESULT: Indoor pipe temperature sensor malfunction.
RESULT: Indoor pipe temperature sensor malfunction.
CODE: F1.
RESULT: Internal ambient temperature sensor malfunction.
RESULT: Internal ambient temperature sensor malfunction.
CODE: UF.
RESULT: Zero passage abnormal.
RESULT: Zero passage abnormal.
CODE: H3.
RESULT: Overload of compressor.
RESULT: Overload of compressor.
CODE: LC.
RESULT: Startup failure.
RESULT: Startup failure.
CODE: UH.
RESULT: No motor of outdoor unit feedback.
RESULT: No motor of outdoor unit feedback.
CODE: E5.
RESULT: Overcurrent protection.
RESULT: Overcurrent protection.
CODE: U7.
RESULT: 4-way valve conversion abnormal.
RESULT: 4-way valve conversion abnormal.
CODE: U1.
RESULT: Phase current detection malfunction of compressor.
RESULT: Phase current detection malfunction of compressor.
See What Our Customers Are Saying:
Aug 16, 2022
Very pleased with the installation of our new furnace and A/C unit. From quotation stage to the completion of the job Twintech was very professional.
Thank you for a job well done.
Aug 15, 2022
My old water heater quit on me. I called TwinTech. In less than 4 days, I had my new water heater installed and the old one taken away. The whole process was quick, easy, pleasant, and well done. This is the third time I've dealt with TwinTech and I've been satisfied each time.
Aug 14, 2022
I had them replace my furnace last year. When it came time for the air conditioner this year, I did not hesitate to call Twintech again. I will also have them perform regular maintenance on them.
Aug 13, 2022
We required a new HVAC replacement after running the old
system for 18 years.
Dave understood our requirements and gave us a quote that
covered all the necessary items.
Installation was fast and very tidy. Everything works as
it should. Our thanks to Greg, Mitch and others for their
excellent work. Recommend this family owned business to
anyone else, considering HVAC or other work.
Aug 12, 2022
I needed a new furnace and A/C to replace my 21 yr. old units, and went to the internet to view potential companies in May, I received 3 quotes,
and chose Twintech based on their salesman Dave who was very detailed and covered off everything on what Twintech was all about,
an extremely dedicated company with so many years of experience, and after reading the on line reviews I was sold on Twintech, who did not disappoint as the installation team were top notch with Greg leading,
I would highly recommend this company without any doubts, in my books they are first class all the way. Our new Amana furnace and A/C are working perfectly !
Aug 11, 2022
Flawless transaction. They did exactly what they promised, showed-up on time, cleaned-up, and were highly professional. Highly recommended.
Aug 10, 2022
Salesperson and 2 man installation team were all professional and
knew their stuff. All three were friendly and helpful, answering all
my questions. The quality of their work demonstrated their experience
and expertise in their field.
Aug 9, 2022
A dear late cousin of mine recommended this company and I have been happy with the service.
Aug 8, 2022
We are very pleased with the work done by Twintech. They were very professional from start to finish. Dave came to our home and gave us a very competitive quote for new high efficiency furnace and air conditioner. The installers were very courteous and professional. We would highly recommend them.
Aug 7, 2022
Great experience getting an old furnace replaced.
Sales Guy (Dave) was great - honest, responsive, and friendly.
The work itself was done quickly and we are very happy with the outcome, thank you! We recommend TwinTech!
See What Our Customers Are Saying:
Aug 8, 2025
We are very happy to recommend this company to everyone. Our furnace broke down on Sunday morning. We phoned them and before noon Grant the owner showed up. He worked on the furnace for about a hour not wanting to give up to fix the problem. The furnace was 17 years old. I was the one talking about replacing it. End result was the next day it was all done. On the Sunday Bob came over with heaters to warm up the house. We decided to replace the water heater at the same time. Thanks Grant for the excellent work. Thumbs up.
Aug 8, 2025
Right on time. Explained how to work the HRV in a different way so the house would not be so dry. Changed my whole house water filter for me as well. Friendly, helpful, caring service!
Feb 18, 2025
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.
Feb 18, 2025
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!
Feb 18, 2025
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!
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