If you’re looking for help fixing your Heil furnace, look no further! Our comprehensive Heil furnace repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model’s error codes.
CODE: Two LED flashes
PROBLEM: Unit’s pressure switch didn’t open
FIX: Check for an obstruction in the pressure tubing
CODE: Three LED flashes
PROBLEM: Unit’s pressure switch didn’t close or reopened
FIX: Check for: excessive wind; if it’s the proper vent size; defective inducer motor; defective pressure switch; inadequate combustion air supply; disconnected or obstructed pressure tubing; or restricted vent
CODE: Four LED flashes
PROBLEM: Limit circuit fault: either a limit or flame rollout is open
FIX: Check for: restricted vent; loose blower wheel; excessive wind; dirty air filter; or defective blower
CODE: Five LED flashes
PROBLEM: An abnormal flame proving signal, the flame is likely proved while the gas valve is de-energized
FIX: Check for a leaky gas valve or a gas valve that is stuck open
CODE: Six LED flashes
PROBLEM: Failure to ignite or the flame sensor was lost while running
FIX: Check for: an ungrounded flame sensor; defective hot surface ignitor; control ground continuity; inadequate flame carryover; or rough ignition
CODE: Seven LED flashes
PROBLEM: Limit circuit lockout
FIX: A lockout will occur if the limit or flame rollout is open for longer than 3 minutes. Control will auto-reset after 3 hours.
CODE: Eight LED flashes
PROBLEM: Gas heating lockout, control won’t auto-reset
FIX: Check for a miswired gas valve or a defective control valve
CODE: Ten LED flashes
PROBLEM: Polarity is reversed
FIX: Review instructions to correct polarity
CODE: 1 + 2
PROBLEM: Blower is on after power up
FIX: Occurs if the unit is powered up during a call for heat or opens while the blower is on delay
CODE: 6 + 1
PROBLEM: Ignition lockout
FIX: Control will auto-reset after 3 hours
CODE: LED is off
PROBLEM: Secondary voltage fuse is open
FIX: Check whether the door switch isn’t closed or for a short circuit
CODE: LED is on
PROBLEM: Control circuitry lockout
FIX: Will auto-reset after 1 hour
CODE: LED is solid
PROBLEM: Gas valve relay is stuck while open, flame sense circuit failure, or software-check error
FIX: Reset power to clear the lockout and then replace control if status code repeats itself
What Our Clients Are Saying About Us
I would recommend KDM for sureOctober 30, 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.
I would recommend KDM for any of the services they provideOctober 30, 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.
KDM was hired for the Installation and relocation of internal gas lineOctober 30, 2020
KDM was hired for the Installation and relocation of internal gas line for my basement finishing project.
Daniel and Steve were amazing, very professional work and courteousOctober 30, 2020
Daniel and Steve were amazing, very professional work and courteous….never dealt with more friendly and knowledgeable Hvac technicians.
I would not hesitate to hire Daniel and his crew againOctober 30, 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.
I definitely recommend KDM Home & gas for othersOctober 30, 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.
Everything was quick and efficientOctober 30, 2020
Assessment happened on a holiday and work was completed the following day. Everything was quick and efficient.
He is reliable and pleasantOctober 30, 2020
Daniel responded to my request for a quote on HomeStars within minutes. He came the next day and hooked up my gas barbeque. Even though it was the Sunday of a long weekend, he managed to fit me in between his other jobs that day. He is reliable and pleasant and completed the gas hook up quickly and efficiently. He and his partner cleaned up after the job and even removed my old barbeque, which involved carrying it down a flight of stairs. I would not hesitate to recommend Daniel.
Dan and Steve from KDM did a great job.October 30, 2020
We wanted to replace our traditional water heater with a brand new Tank Less Water Heater. Dan and Steve from KDM did a great job. They stayed on quote and a did a top notch job. I would recommend them to anyone in the Durham region. Thanks Again.
Excellent customer service. Reliable and on time for appointments or called promptly to reschedule.October 30, 2020
Excellent customer service. Reliable and on time for appointments or called promptly to reschedule. They took care not to make a mess and left the area tidy and clean. Good advice on selecting units to meet our needs without upselling.
Overall, quality work at a reasonable price, and everything is performing beautifully!