Durham Region Air Conditioning Repair, Service and Installation
If you're looking for help fixing your napoleon air conditioner, look no further! Our comprehensive napoleon air conditioner repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model's error codes.
PROBLEM: Unit will not operate,
RESULT: Power disconnected or loose connection.
FIX: Check power supply to unit. Check voltage at contactor.
RESULT: Power disconnected or loose connection.
FIX: Check power supply to unit. Check voltage at contactor.
PROBLEM: Unit will not operate,
RESULT: Blown fuse / breaker tripped.
FIX: Replace fuses/reset breaker.
RESULT: Blown fuse / breaker tripped.
FIX: Replace fuses/reset breaker.
PROBLEM: Unit will not operate,
RESULT: Thermostat out of calibration is set too high.
FIX: Reset.
RESULT: Thermostat out of calibration is set too high.
FIX: Reset.
PROBLEM: Unit will not operate,
RESULT: Contactor defective.
FIX: Check for 24VAC at contactor coil - replace if open.
RESULT: Contactor defective.
FIX: Check for 24VAC at contactor coil - replace if open.
PROBLEM: Unit will not operate,
RESULT: Transformer defective.
FIX: Check wiring - replace transformer.
RESULT: Transformer defective.
FIX: Check wiring - replace transformer.
PROBLEM: Unit will not operate,
RESULT: High pressure control open (if provided).
FIX: Reset - see high pressure connection.
RESULT: High pressure control open (if provided).
FIX: Reset - see high pressure connection.
PROBLEM: Outdoor fan on; Compressor off.
RESULT: Run or start capacitor defective.
FIX: Replace.
RESULT: Run or start capacitor defective.
FIX: Replace.
PROBLEM: Outdoor fan on; Compressor off.
RESULT: Start relay defective.
FIX: Replace.
RESULT: Start relay defective.
FIX: Replace.
PROBLEM: Outdoor fan on; Compressor off.
RESULT: Loose wire.
FIX: Check for correct voltage at compressor - check and tighten all connections.
RESULT: Loose wire.
FIX: Check for correct voltage at compressor - check and tighten all connections.
PROBLEM: Outdoor fan on; Compressor off.
RESULT: Compressor stuck, grounded or open motor winding, open internal overload.
FIX: Wait at least 2 hours for overload to reset; if still open, replace the compressor.
RESULT: Compressor stuck, grounded or open motor winding, open internal overload.
FIX: Wait at least 2 hours for overload to reset; if still open, replace the compressor.
PROBLEM: Too little cooling.
RESULT: Low voltage condition.
FIX: Add start kit components.
RESULT: Low voltage condition.
FIX: Add start kit components.
PROBLEM: Too little cooling.
RESULT: Improperly sized unit.
FIX: Recalculate load.
RESULT: Improperly sized unit.
FIX: Recalculate load.
PROBLEM: Too little cooling.
RESULT: Improper indoor airflow.
FIX: Check-should be approximately 400 CFM per ton.
RESULT: Improper indoor airflow.
FIX: Check-should be approximately 400 CFM per ton.
PROBLEM: Too little cooling.
RESULT: Incorrect refrigerant charge.
FIX: Charge per procedure in installation manual.
RESULT: Incorrect refrigerant charge.
FIX: Charge per procedure in installation manual.
PROBLEM: Too little cooling.
RESULT: Air, non-condensables or moisture in system.
FIX: Recover refrigerant.
RESULT: Air, non-condensables or moisture in system.
FIX: Recover refrigerant.
PROBLEM: Compressor operates in short cycles.
RESULT: Incorrect voltage.
FIX: At compressor terminals, voltage must be +/10% of nameplate marking when unit is operating.
RESULT: Incorrect voltage.
FIX: At compressor terminals, voltage must be +/10% of nameplate marking when unit is operating.
PROBLEM: Compressor operates in short cycles.
RESULT: Defective overload protector.
FIX: Replace - check for correct voltage.
RESULT: Defective overload protector.
FIX: Replace - check for correct voltage.
PROBLEM: Compressor operates in short cycles.
RESULT: Refrigerant undercharge.
FIX: Add refrigerant.
RESULT: Refrigerant undercharge.
FIX: Add refrigerant.
PROBLEM: High head pressure; Low suction pressure.
RESULT: Restriction in liquid line, expansion device or filter drier.
FIX: Remove or replace defective component.
RESULT: Restriction in liquid line, expansion device or filter drier.
FIX: Remove or replace defective component.
PROBLEM: High head pressure; Low suction pressure.
RESULT: Lack of sufficient indoor airflow.
FIX: Clean/check filters, registers, or evaporator coil that may cause a restriction.
RESULT: Lack of sufficient indoor airflow.
FIX: Clean/check filters, registers, or evaporator coil that may cause a restriction.
PROBLEM: High head pressure; Normal suction pressure.
RESULT: Dirty outdoor coil.
FIX: Clean coil.
RESULT: Dirty outdoor coil.
FIX: Clean coil.
PROBLEM: High head pressure; Normal suction pressure.
RESULT: Refrigerant overcharge.
FIX: Correct system charge.
RESULT: Refrigerant overcharge.
FIX: Correct system charge.
PROBLEM: High head pressure; Normal suction pressure.
RESULT: Outdoor fan not running.
FIX: Repair or replace.
RESULT: Outdoor fan not running.
FIX: Repair or replace.
PROBLEM: High head pressure; Normal suction pressure.
RESULT: Air or non-condensables in system.
FIX: Recover refrigerant, evacuate and recharge.
RESULT: Air or non-condensables in system.
FIX: Recover refrigerant, evacuate and recharge.
PROBLEM: Low head pressure; High suction pressure.
RESULT: Expansion device stuck in open position.
FIX: Replace expansion device.
RESULT: Expansion device stuck in open position.
FIX: Replace expansion device.
PROBLEM: Low head pressure; High suction pressure.
RESULT: Defective compressor valves.
FIX: Replace compressor.
RESULT: Defective compressor valves.
FIX: Replace compressor.
PROBLEM: Low suction pressure; Compressor cool. Ice on indoor coil.
RESULT: Low indoor airflow.
FIX: Increase speed of blower or reduce restriction - replace air filter.
RESULT: Low indoor airflow.
FIX: Increase speed of blower or reduce restriction - replace air filter.
PROBLEM: Low suction pressure; Compressor cool. Ice on indoor coil.
RESULT: Operating below 65F (18C) outdoors.
FIX: Add low ambient kit.
RESULT: Operating below 65F (18C) outdoors.
FIX: Add low ambient kit.
PROBLEM: Low suction pressure; Compressor cool. Ice on indoor coil.
RESULT: Moisture in system.
FIX: Recover refrigerant - evacuate and recharge - replace filter drier.
RESULT: Moisture in system.
FIX: Recover refrigerant - evacuate and recharge - replace filter drier.
PROBLEM: High suction pressure; or fluctuating head and suction pressures.
RESULT: Excessive load.
FIX: Recheck load calculation.
RESULT: Excessive load.
FIX: Recheck load calculation.
PROBLEM: High suction pressure; or fluctuating head and suction pressures.
RESULT: Defective compressor.
FIX: Replace.
RESULT: Defective compressor.
FIX: Replace.
PROBLEM: High suction pressure; or fluctuating head and suction pressures.
RESULT: TXV hunting.
FIX: Check TXV bulb clamp - check air distribution on coil - replace TXV.
RESULT: TXV hunting.
FIX: Check TXV bulb clamp - check air distribution on coil - replace TXV.
PROBLEM: High suction pressure; or fluctuating head and suction pressures.
RESULT: Air or non-condensables in system.
FIX: Recover refrigerant, evacuate and recharge.
RESULT: Air or non-condensables in system.
FIX: Recover refrigerant, evacuate and recharge.
PROBLEM: Pulsing noise at expansion device or liquid line.
RESULT: Air or non-condensables in system.
FIX: Recover refrigerant, evacuate and recharge.
RESULT: Air or non-condensables in system.
FIX: Recover refrigerant, evacuate and recharge.
PROBLEM: Registers sweat.
RESULT: Low indoor airflow.
FIX: Increase speed of blower or reduce restriction - replace air filter.
RESULT: Low indoor airflow.
FIX: Increase speed of blower or reduce restriction - replace air filter.
See What Our Customers Are Saying:
May 16, 2021
Appreciated a quick response to my request. Dave and Greg were very professional and made the experience seamless.
Feb 1, 2021
Very professional through the entire process. Installation and removel was done on a sloppy winter day, they put down runners on the floors and stairs and when they left, there wasn;t any sign of someone being in our house. Furnace works great as promised.
Feb 1, 2021
Dave was very pleasant to deal with and Twintech responded quickly when our furnace needed to be replaced ASAP. Installation was done on time and the crew were neat and tidy. We now have a great furnace that suits the needs of our family.
Feb 1, 2021
When your furnace kicks in over the holidays and you're not sure where to turn.. I'm so thankful that this company returned my phone call. I appreciated their transparency and clarity which allowed me to make an informed decision. With various quotes thrown at you, it can be difficult to make the right decision and trust the solutions offered by different companies. TwinTech spoke the truth and delivered on their word. Neat, timely and clean service; the peace of mind I needed during a very cold holiday season. I highly recommend them!
Feb 1, 2021
Pulling a old unit out and installing a modern heating system! Required drilling holes in the wall for the newer pipes. We went from 70% (I am willing to bet it was far less due to lack of maintenance and just old) to 96% newer . It now feels warmer and more pressure and we use to run extra heaters and feel as though they are not necessary!
Feb 1, 2021
I received three quotes before deciding to choose Twintech. Dave's prices was much more reasonable than the competitors. I most appreciated their honest recommendations. Others tried to oversell their products and services. Thank you Dave!
Feb 1, 2021
They had the best price and did a great job on the installation. Recommend them to anyone.
Feb 1, 2021
It was a amazing and professional high quality job
Friendly and very helpful representatives
Thank you for understanding my concern
And explain very well
Overall we pleased with your service
Tanks
May 15, 2020
My 19 year old furnace stopped working when the cold weather hit in November, and I was left without heat. I interviewed several companies and found TWINTECH HEATING and COOLING to be very knowledgeable, quick to respond to my inquiries and very competitively priced.
Dave provided all of the information and pricing ahead of time and set up the appointment for the installation. Greg and Mitch arrived on time to do the installation and worked quickly and efficiently to complete the job.
After the completion of the installation, Dave followed up to ensure that everything was working well and that I didn't have any concerns.
Overall, this was a low-stress and flawless experience from start to finish. I would highly recommend TWINTECH HEATING and COOLING to anyone that requires a new furnace.
May 14, 2020
Our 20 year old furnace broke down during the first cold weekend this past November and our usual HVAC company never returned our phone call. Their loss, missing out on a sale since we didn't want to spend much fixing an old furnace and our 40 year old air conditioner was also long overdue for replacement. We proceeded in obtaining three different quotes for furnace and air conditioner replacement, and proceeded with the one we received from Twintech.
Dave was friendly, knowledgable and accommodating to our schedule and provided with us with a price that fell in the middle of the three quotes that we had. We felt that the Amana furnace and air conditioner he quoted us on were the best products and value offered to us and felt most comfortable with the professionalism and reputation of Twintech.
Greg, Grant and Mitch were at our house for installation the day after we decided to proceed. The guys were friendly and informative, the job was completed efficiently and workmanship appears excellent. Our house is certainly much more comfortable with the new two-stage variable speed Amana furnace compared to the old clunker! And, we're looking forward to enjoying the new air conditioner once summer rolls around again. Thanks 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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