coleman furnace codes

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

CODE: Slow green flashing
PROBLEM: Coleman furnace is operating normally.
FIX: N/A

CODE: Slow amber flashing
PROBLEM: Normal operation with a call for heat.
FIX: N/A

CODE: Steady on red
PROBLEM: There’s a control failure.

CODE: Rapid red flashing
PROBLEM: There’s a twinning error with incorrect 24V phasing.
FIX: Check the twinning wiring.

CODE: Rapid amber flashing
PROBLEM: There’s a low flame sense current.
FIX: Check and clean the flame sensor. If it’s still an issue, check for proper gas flow.

CODE: One red flash
PROBLEM: A flame’s present with the gas turned off.
FIX: Check the gas valve. It could be leaky or slow closing.

CODE: Two red flashes
PROBLEM: Pressure switch is stuck in the closed position.
FIX: Check if there is a faulty pressure switch or miswiring.

CODE: Three red flashes
PROBLEM: Pressure switch is stuck in the open position.
FIX: Check if there is a faulty inducer, a blocked vent pipe, a broken pressure switch hose, or a faulty pressure switch.

CODE: Four red flashes
PROBLEM: Limit switch is stuck while open.
FIX: Check for a a dirty filter, an improperly sized duct system, an incorrect blower speed setting, or a faulty blower motor.

CODE: Five red flashes
PROBLEM: Rollout switch is stuck while open.
FIX: The rollout control is manually reset. Therefore, if it has opened, then check to see if the inducer is operating properly or there is an issue with the primary heat exchanger.

CODE: Six red flashes
PROBLEM: Pressure switch cycle has locked out.
FIX: The furnace will lockout for one hour and then reset.

CODE: Seven red flashes
PROBLEM: There’s an ignition lockout due to too many retries.
FIX: The flame couldn’t be established, check for a faulty gas valve, a dirty or defective flame sensor, a faulty hot surface ignitor, or a problem with the burner.

CODE: Eight red flashes
PROBLEM: There’s an ignition lockout due to repeated power recycles.
FIX: Check if there is low gas pressure, a dirty or defective flame sensor, or a faulty gas valve.

CODE: Nine red flashes
PROBLEM: There’s a grounding or line polarity issue.
FIX: Check the polarity at both the furnace and branch.

CODE: Ten red flashes
PROBLEM: Gas continues to flow with no call for heating.
FIX: Check on the gas valve and the gas valve wiring.

coleman furnace codes

 


What Our Clients Are Saying About Us

I would recommend KDM for sure

August 25, 2020

Dan was very friendly and polite from the start. Did exactly the work that we talked about on the phone, and was very quick making a late evening call on a Sunday. Tested all the joints and even painted the gas lines. I would recommend him for sure.

Colin JacobsCourtice, ON

I would recommend KDM for any of the services they provide

August 25, 2020

I had a 2nd hand pool heater hooked up and needed help getting it fired up. So I contacted Dan at KDM to see if they could help and was pleased he could make it over within a couple of days. He checked out the gas piping for leaks and proceeded to analyze the components of the control system and determined a faulty pressure switch was likely preventing operation. I was able to source the part and Dan was able to make a 2nd call within a day to install and complete the job. So in summary, I would recommend KDM for any of the services they provide.

Douglas PattersonWhitby, Ontario

KDM was hired for the Installation and relocation of internal gas line

August 25, 2020

KDM was hired for the Installation and relocation of internal gas line for my basement finishing project.

Paul AlisonOshawa, Ontario

Daniel and Steve were amazing, very professional work and courteous

August 25, 2020

Daniel and Steve were amazing, very professional work and courteous….never dealt with more friendly and knowledgeable Hvac technicians.

Rajshar MahomesMarkham, Ontario

I would not hesitate to hire Daniel and his crew again

August 25, 2020

Asked for quotes on a A/C and furnace after 17 years when the A/C unit broke down. I contacted a few HVAC contractors including KDM. Daniel could not have been more helpful and responsive and after reviewing the quotes decided to hire him for the job. Could no have made a better choice. Daniel was patient and upfront and answered all my questions when asked. He upgraded my A/C unit for the same price after the original unit we agreed upon was back ordered. The crew came when they said they would an completed the installation in a timely and orderly fashion.

I would not hesitate to hire Daniel and his crew again. In fact he is coming back to deal with another issue I have next month!

Job well done.

Ian DavidPickering, Ontario

I definitely recommend KDM Home & gas for others

August 25, 2020

I was looking for someone who can do the gas line connection on a weekend and I found the right guys with KDM Home & Gas. Daniel came on Sunday morning to do the work. He installed the new gas line, connected the new gas stove, confirmed no leaks and ensured everything works fine. It was a really hot day outside but he did an excellent job.

.

RajeevAjax, Ontario

Everything was quick and efficient

August 25, 2020

Assessment happened on a holiday and work was completed the following day. Everything was quick and efficient.
Thanks Daniel.

Chris SouthamWhitby, Ontario