Durham Region Air Conditioning Repair, Service and Installation
Goodman Manufacturing is an American company operating as an independent subsidiary of Daikin Group, the world's largest manufacturer of heating, ventilation and air conditioning products and systems. The company, founded in 1975 and based in Houston, Texas, manufactures residential heating and cooling systems.
CODE: A2.
RESULT: Shorted sensor./Open sensor./Sensor disconnected./Sensor out of range.
RESULT: Shorted sensor./Open sensor./Sensor disconnected./Sensor out of range.
CODE: A3.
RESULT: Shorted sensor./Open sensor./Sensor disconnected./Sensor out of range.
RESULT: Shorted sensor./Open sensor./Sensor disconnected./Sensor out of range.
CODE: E5.
RESULT: Short in low voltage wiring.
RESULT: Short in low voltage wiring.
CODE: EE.
RESULT: Compressor relay contacts welded.
RESULT: Compressor relay contacts welded.
CODE: b0.
RESULT: Indoor blower motor problem./Communications errorbetween indoor and outdoor unit.
RESULT: Indoor blower motor problem./Communications errorbetween indoor and outdoor unit.
CODE: b9.
RESULT: Indoor blower motor problem./Blocked filters./Restrictive/ undersized ductwork./Indoor-outdoor unit miss match.
RESULT: Indoor blower motor problem./Blocked filters./Restrictive/ undersized ductwork./Indoor-outdoor unit miss match.
CODE: d0.
RESULT: Air conditioner/heat pump is wired as part of a communicating system and integrated control module does not contain any shared data.
RESULT: Air conditioner/heat pump is wired as part of a communicating system and integrated control module does not contain any shared data.
CODE: d1.
RESULT: Air conditioner/heat pump is wired as part of a communicating system and integrated control module contains invalid shared data or network data is invalid for the integrated control module.
RESULT: Air conditioner/heat pump is wired as part of a communicating system and integrated control module contains invalid shared data or network data is invalid for the integrated control module.
CODE: d2.
RESULT: Air conditioner/heat pump is wired as part of a communicating system and outdoor unit requires airflow greater than indoor unit's airflow capability./ Shared data is incompatible with the system or missing parameters.
RESULT: Air conditioner/heat pump is wired as part of a communicating system and outdoor unit requires airflow greater than indoor unit's airflow capability./ Shared data is incompatible with the system or missing parameters.
CODE: d3.
RESULT: Shared data sent to integrated control module does not match hardware configuration.
RESULT: Shared data sent to integrated control module does not match hardware configuration.
CODE: d4.
RESULT: Shared data on memory card has been rejected.
RESULT: Shared data on memory card has been rejected.
CODE: 01.
RESULT: Low refrigerant charge./Restriction in liquid line./Indoor blower motor failure.Indoor thermostat set extremely low.
RESULT: Low refrigerant charge./Restriction in liquid line./Indoor blower motor failure.Indoor thermostat set extremely low.
CODE: 02.
RESULT: Blocked condenser coil./Outdoor fan not running.
RESULT: Blocked condenser coil./Outdoor fan not running.
CODE: 03.
RESULT: Intermittent thermostat demand./Faulty compressor relay.
RESULT: Intermittent thermostat demand./Faulty compressor relay.
CODE: 04.
RESULT: Compressor bearings are seized./Failed compressor run capacitor./Faulty run capacitor wiring./Faulty compressor wiring./Low line voltage.
RESULT: Compressor bearings are seized./Failed compressor run capacitor./Faulty run capacitor wiring./Faulty compressor wiring./Low line voltage.
CODE: 05.
RESULT: Power is disconnected./Failed compressor protector./Compressor not properly wired to control.
RESULT: Power is disconnected./Failed compressor protector./Compressor not properly wired to control.
CODE: 06.
RESULT: Compressor start winding is open./Failed compressor run capacitor./Faulty run capacitor wiring./Compressor not properly wired to control./Faulty compressor wiring.
RESULT: Compressor start winding is open./Failed compressor run capacitor./Faulty run capacitor wiring./Compressor not properly wired to control./Faulty compressor wiring.
CODE: 07.
RESULT: Compressor run winding is open./Compressor no properly wired to control./Faulty compressor wiring.
RESULT: Compressor run winding is open./Compressor no properly wired to control./Faulty compressor wiring.
CODE: 08.
RESULT: Low line voltage./ High line voltage.
RESULT: Low line voltage./ High line voltage.
CODE: 09.
RESULT: Control detects secondary voltage less than 18 VAC./Transformer overloaded./Low line voltage.
RESULT: Control detects secondary voltage less than 18 VAC./Transformer overloaded./Low line voltage.
See What Our Customers Are Saying:
Jul 3, 2022
Great service and great people to deal with, from sales to installer. I highly recommend this company.
Apr 28, 2022
Twintech replaced our aging furnace and air conditioner recently. I highly recommend this company. Their quote was competitive, they were on time and respectful of our home and extremely professional. From the salesman to the installers and the owner who followed up afterward to ensure we were satisfied, we are very pleased with the service. We are looking forward to working with this company for all of our HVAC needs for the years to come. Excellent workmanship and service!
Apr 28, 2022
We wanted to get our AC replaced as it was 22-years old and added to this our furnace was costing more and more to repair. So, we decided to get both the furnace and AC replaced.
After going through a few quotes and product reviews we decided to go with Twintech. The three-men crew arrived early in the morning, wasted no time and got to work right away. By 2:00 pm, they were all done. Ive found their work to be top notch and they were completely professional. I had all my questions answered to my satisfaction both during the progress of their work and at end.
I have pleasure in recommending Twintech to anyone who is looking to get their furnace or Ac replaced
Nathan S.
Apr 28, 2022
Our air conditioner died On a Saturday and within hours Dave came out to take a look and discuss replacement/repair options.
The new air conditioner was installed on the Wednesday. The new unit was installed quickly. The installers were friendly and cleaned up afterwards.
We noticed a slight leak around the furnace that night and they came out the next day and fixed the issue. It has been working great and is quieter than our previous unit.
Very satisfied and would highly recommend TwinTech.
Apr 28, 2022
I contacted TwinTech to replace my 20-year old A/C. Dave, their service rep, promptly replied and was at my home within 2 hours. He was friendly and knowledgeable and didn't try to upgrade or oversell their A/C units but suggested the best fit for my small 1000 feet bungalow. Although this was during a heatwave and very busy, they were able to fit me in 2 days later. The TwinTech crew installed a 1.5 ton Ducane A/C unit that is now running smoothly while maintaining a constant cooling temperature. The crew were very courteous, professional and efficient and I will definitely recommend TwinTech to family and friends. I much appreciated your great service.
Nancy M., Oshawa
Apr 28, 2022
We had a great experience. The guys who installed our a/c did a nice job. Cleaned up.
Apr 28, 2022
excellent crew, fast and efficient! Would call them again when I need a new furnace.
Apr 28, 2022
Professional, courteous and efficient, dont need to say more than that! Use them you will not regret it.
Apr 28, 2022
TwinTech was a pleasure to deal with from the estimate through installation. We replaced a 28 year old a/c unit with one recommended by TwinTech's sales representative Dave who took the time to go over the product with us and answer any questions. The warranty is for 10 years parts and labour and they will complete the registration for you. Installation was by Greg (owner) and Mitch and Spencer who were quick and efficient and left everything clean and tidy.
Apr 28, 2022
Very professional, from the sales consultation and inspection to the final installation. Met every expectations we had for the job. A local business with great client support. We highly recommend. Twintech is a blue chip! Thanks!
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!
The Furnace in Winter: A Simple Homeowner's Guide
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - October 26, 2024
As the cold season arrives, keeping your home warm is essential, and your furnace is at the heart of it all. Here's a straightforward guide to help you ensure your furnace runs smoothly all winter long: 1. Understand How Your Furnace Works
Read MoreIs My Heat Pump Malfunctioning?
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - January 25, 2024
I can certainly help you troubleshoot common issues that may indicate a malfunction. Here are a few steps you can take to assess the situation: Check the Thermostat: Ensure that the thermostat is set to the appropriate temperature and mode (
Read MoreIncreasing the Longevity of Your Heat Pump
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - October 30, 2023
Increasing the longevity of your heat pump involves regular maintenance and adopting good practices to ensure optimal performance. Here are some tips to help extend the lifespan of your heat pump: Regular Maintenance: Clean or Replac
Read MoreCan I Upgrade My Furnace Unit?
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - November 3, 2023
Yes, it is often possible to upgrade a furnace unit to improve its performance, energy efficiency, and features. Here are some common upgrades that you might consider: High-Efficiency Furnace: Upgrading to a high-efficiency furnace can signi
Read More