Durham Region Air Conditioning Repair, Service and Installation
The flashing LEDs on your furnace will correspond to a specific fault code that is shown here on their diagnostic chart.
Goodman is one of the biggest names in home heating and energy efficient home comfort.
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: Steady on
RESULT: Normal operation
FIX: N/A
RESULT: Normal operation
FIX: N/A
CODE: OFF
RESULT: Control Failure
FIX: Replace Control Board.
RESULT: Control Failure
FIX: Replace Control Board.
CODE: 1 Flash
RESULT: System lockout (Retries exceeded)
FIX: After one hour of lockout, your furnace will automatically reset itself.
RESULT: System lockout (Retries exceeded)
FIX: After one hour of lockout, your furnace will automatically reset itself.
CODE: 2 Flashes
RESULT: Pressure switch stuck closed
FIX: You should either repair the short or replace the pressure switch.
RESULT: Pressure switch stuck closed
FIX: You should either repair the short or replace the pressure switch.
CODE: 3 Flashes
RESULT: Pressure switch stuck open
FIX: You should check the pressure switch hose for blocks or an improper connection. Otherwise, see if any loose wiring needs tightening.
RESULT: Pressure switch stuck open
FIX: You should check the pressure switch hose for blocks or an improper connection. Otherwise, see if any loose wiring needs tightening.
CODE: 4 Flashes
RESULT: Open high limit
FIX: You should check and clean all the filters, tighten the wiring, and see if there are any blockages in the flue.
RESULT: Open high limit
FIX: You should check and clean all the filters, tighten the wiring, and see if there are any blockages in the flue.
CODE: 5 Flashes
RESULT: Flame sense without gas valve
FIX: You should check for a leaky or open gas valve or a lingering burner flame.
RESULT: Flame sense without gas valve
FIX: You should check for a leaky or open gas valve or a lingering burner flame.
CODE: 6 Flashes
RESULT: Open rolloutor open fuse
FIX: Replace Fuse.
RESULT: Open rolloutor open fuse
FIX: Replace Fuse.
CODE: 7 Flashes
RESULT: Low flame signal
FIX: Adjust the gas pressure according to the information available to you.
RESULT: Low flame signal
FIX: Adjust the gas pressure according to the information available to you.
CODE: 8 Flashes
RESULT: This means your furnace has an igniter circuit problem due to a defective igniter or an improperly connected igniter.
FIX: Replace the igniter or check the ground wiring for defects.
RESULT: This means your furnace has an igniter circuit problem due to a defective igniter or an improperly connected igniter.
FIX: Replace the igniter or check the ground wiring for defects.
CODE: 9 Flashes
RESULT: This means that your furnace has a high-stage pressure switch that won't close during a high-stage-induced draft blower operation.
FIX: Check your Goodman furnace for a pinched or blocked pressure switch hose.
RESULT: This means that your furnace has a high-stage pressure switch that won't close during a high-stage-induced draft blower operation.
FIX: Check your Goodman furnace for a pinched or blocked pressure switch hose.
CODE: Continuous / Rapid Flashes
RESULT: Reversed 115 vac polarity
FIX: You will have to correct the wiring polarity after reviewing the wiring diagram.
RESULT: Reversed 115 vac polarity
FIX: You will have to correct the wiring polarity after reviewing the wiring diagram.
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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