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Durham Region Air Conditioning Repair, Service and Installation

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If you're looking for help fixing your daikin furnace, look no further! Our comprehensive daikin furnace repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model's error codes.


CODE: One LED flash that stays on continuously.
RESULT: No signal from the thermostat.
FIX: Turn off the unit's power and check connections.

CODE: Single LED flash.
RESULT: Furnace lockout due to an excessive number of ignition retries (3).
FIX: Locate and correct gas interruption. Reset by lowering it for 20 seconds and then raise it back, furnace will reset itself after one hour.

CODE: Two LED flashes.
RESULT: Draft inducer is not operating or the pressure switch circuit has closed.
FIX: Replace the induced draft blower pressure switch, or repair the short.

CODE: Three LED flashes.
RESULT: The pressure switch is open.
FIX: Pressure switch may need to be replaced.

CODE: Four LED flashes.
RESULT: Pressure issue. High limit cut-off due to faulty wiring or bad filters.
FIX: Replace or clean the air filter; clean drain tubes of moisture or debris; may have an open limit switch that requires a jump, ensure not to run it with the main switch bypassed.

CODE: Five LED flashes.
RESULT: The unit is sensing a flame without a call for heat.
FIX: Might be the result of a slowly closing valve. Turn off the gas until the valve is fixed.

CODE: Seven LED flashes.
RESULT: Faulty flame sensor.
FIX: Flame sensor might be dirty or placed too far from flame. Clean if dirty, replace if defective.

CODE: Continuous LED flashing.
RESULT: Polarity of volt power is reversed.
FIX: Review wiring diagram to correct polarity.


See What Our Customers Are Saying:

by Private User on Twintech Heating and Cooling

Flawless transaction. They did exactly what they promised, showed-up on time, cleaned-up, and were highly professional. Highly recommended.

by Bill Edmondson on Twintech Heating and Cooling

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.

by Private User on Twintech Heating and Cooling

A dear late cousin of mine recommended this company and I have been happy with the service.

by Private User on Twintech Heating and Cooling

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.

by W1n5t0n1987! on Twintech Heating and Cooling

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!

by Private User on Twintech Heating and Cooling

This review is late coming so my apologies to the amazing Twin Tech team! I contacted Dave at Twin Tech for a quote this past Feb (as I was collecting a few) and his recommendation was excellent. From the first meeting with Dave to the team installing the new furnace, not once did i feel uncomfortable . The team were extremely professional yet personable and clean and tidy. Decent companies still exist!
The new furnace just purrs and its just amazing the difference it has made!
(PS my sibling ended up getting a furnace from them as well)

by Private User on Twintech Heating and Cooling

The service was Twintech was excellent.
Dave our salesperson was easy to talk to and was professional. The unit recommended meets our needs and budget.
Greg and his team arrived on time for the installation and even got rid of the garbage the contractors left in our furnace.
Would definitely recommend Twintech.

by Steve V, Toronto on Twintech Heating and Cooling

Our old water tank was installed in 1997. Wasn't working as well as it should so we looked into a tankless as it is more efficient and a space saver! we had used Twintech in the past for a furnace cleaning and were satisfied with that so we decided to ask for a quote for the changeover. Gary arrived and provided the options and the quote fit within our budget so we decide to go with them after receiving a few alternative quotes from other companies. They did what the said would be done and it was completed within a reasonable time frame! Removal and cleanup of the old tank was seamless. We are now enjoying consistent and efficient Hot water! I recommend Twintech and would use them for future projects!

by New AC Unit + Humidifier on Twintech Heating and Cooling

One of the most honest HVAC companies out there! Dave was very helpful and informative in helping us choose a new AC unit. While they weren’t the lowest quote, we went with them because we trusted Dave and he was the most honest guy out of the companies that quoted us.
Greg and his crew who installed the unit were very professional and did a great job. If I could do it over again I would choose Twintech again.

by Private User on Twintech Heating and Cooling

Relocated and replaced our air conditioning unit. Fast, professional, and high quality service. We would definitely use them again for future projects!