Durham Region Air Conditioning Repair, Service and Installation
Since 1928, Armstrong Air has been the smart choice for homeowners who expect more from their heating and cooling system. Built with durable materials and incorporating brilliant technology throughout, Armstrong Air is not only the brand to trust with your home comfort, it's also the brand more dealers would choose for themselves. From gas, oil and electric furnaces to air conditioners, heat pumps, air handlers and indoor air quality equipment, when you trust Armstrong Air, you're trusting The Professional's Choice.
The flashing LEDs on your furnace will correspond to a specific fault code that is shown here on their diagnostic chart.
CODE: LED Off
RESULT: No power to control or control hardware fault detected.
RESULT: No power to control or control hardware fault detected.
CODE: LED On
RESULT: Normal operation.
RESULT: Normal operation.
CODE: 1 Flash
RESULT: Flame present with gas valve off.
RESULT: Flame present with gas valve off.
CODE: 2 Flashes
RESULT: Pressure switch closed with inducer off.
RESULT: Pressure switch closed with inducer off.
CODE: 3 Flashes
RESULT: Pressure switch open with inducer on.
RESULT: Pressure switch open with inducer on.
CODE: 4 Flashes
RESULT: High limit switch open.
RESULT: High limit switch open.
CODE: 5 Flashes
RESULT: Rollout switch open.
RESULT: Rollout switch open.
CODE: 6 Flashes
RESULT: Pressure switch cycle lockout.
RESULT: Pressure switch cycle lockout.
CODE: 7 Flashes
RESULT: Lockout due to no ignition.
RESULT: Lockout due to no ignition.
CODE: 8 Flashes
RESULT: Lockout due to too many flame dropouts.
RESULT: Lockout due to too many flame dropouts.
CODE: 9 Flashes
RESULT: Incorrect line voltage phasing.
RESULT: Incorrect line voltage phasing.
See What Our Customers Are Saying:
Jan 1, 2015
My old furnace had finally broken down for the last time when contacted twintech to have a new furnace installed They were prompt, knowledgeable and very reasonably priced. They did such a great job i tell all my friends and family about this company.
Jan 1, 2015
To whom it may concern, I recently had TwinTech (Greg and Grant Dainty) replace my furnace and service both my gas fireplaces and air conditioning unit. They were professional, courteous and very fair in their pricing. I would gladly recommend TwinTech to anyone needing work done. I can be contacted at 905-626-XXXX.
Jan 1, 2015
My Fiancé and I have relied on Twintech Heating and Cooling now for the better part of the last 10 years. In that time, Greg has installed a furnace, an air conditioner, and a heat-pump at our residence in Toronto. In each instance Greg and his team were a pleasure to deal with. They were courteous and professional throughout the whole process and the quality of their work is first rate. Our experiences have always been extremely positive and we have referred his services numerous times to our friends and family. Without hesitation, I would recommend Greg and TwinTech Heating and Cooling to anyone looking to service or replace their existing heat/AC equipment
See What Our Customers Are Saying:
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!
Feb 18, 2025
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!
Feb 18, 2025
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.
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