Durham Region Air Conditioning Repair, Service and Installation
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: Heartbeat.
RESULT: Control has 24 VAC power.
RESULT: Control has 24 VAC power.
CODE: 2 Flashes.
RESULT: Pressure switch did not open, check for obstructed pressure tubing.
RESULT: Pressure switch did not open, check for obstructed pressure tubing.
CODE: 3 Flashes.
RESULT: Pressure switch did not close, or re-opened- Check for: excessive wind, proper vent size, defective inducer motor, low inducer voltage, defective pressure switch, inadequate combustion air supply, disconnected or obstructed pressure tubing, low inlet gas pressure, restricted vent, condensate clogged.
RESULT: Pressure switch did not close, or re-opened- Check for: excessive wind, proper vent size, defective inducer motor, low inducer voltage, defective pressure switch, inadequate combustion air supply, disconnected or obstructed pressure tubing, low inlet gas pressure, restricted vent, condensate clogged.
CODE: 4 Flashes.
RESULT: Limit circuit fault-a limit or flame rollout is open. Check for: restricted vent, proper vent sizing, loose blower wheel, excessive wind, dirty filter, defective blower motor, defective switch or connections, inadequate combustion air supply.
RESULT: Limit circuit fault-a limit or flame rollout is open. Check for: restricted vent, proper vent sizing, loose blower wheel, excessive wind, dirty filter, defective blower motor, defective switch or connections, inadequate combustion air supply.
CODE: 5 Flashes.
RESULT: Abnormal flame proving signal-Flame is proved while gas valve is de-energized. Check for: leaky gas valve, stuck open gas valve.
RESULT: Abnormal flame proving signal-Flame is proved while gas valve is de-energized. Check for: leaky gas valve, stuck open gas valve.
CODE: 6 Flashes.
RESULT: Failure to ignite or flame sense lost while running. Check for: Flame sensor must not be grounded, low inlet gas pressure, oxide buildup on flame sensor, Manual valve shut off, proper flame sense microamps, gas valve defective or gas valve turned off, defective hot surface igniter, control ground continuity, Inadequate flame carryover or rough ignition, green/yellow wire MUST be connected to furnace sheet metal.
RESULT: Failure to ignite or flame sense lost while running. Check for: Flame sensor must not be grounded, low inlet gas pressure, oxide buildup on flame sensor, Manual valve shut off, proper flame sense microamps, gas valve defective or gas valve turned off, defective hot surface igniter, control ground continuity, Inadequate flame carryover or rough ignition, green/yellow wire MUST be connected to furnace sheet metal.
CODE: 7 Flashes.
RESULT: Limit circuit lockout- Lockout occurs if the limit or flame rollout is open longer than 3 minutes. Control will auto reset after 3 hours. Refer to #4.
RESULT: Limit circuit lockout- Lockout occurs if the limit or flame rollout is open longer than 3 minutes. Control will auto reset after 3 hours. Refer to #4.
CODE: 8 Flashes.
RESULT: Gas heating lockout-Control will NOT auto reset. Check for: mis-wired gas valve, defective control valve.
RESULT: Gas heating lockout-Control will NOT auto reset. Check for: mis-wired gas valve, defective control valve.
CODE: 10 Flashes.
RESULT: Polarity-Line voltage, polarity reversed. If twinned, refer to twinning kit instructions.
RESULT: Polarity-Line voltage, polarity reversed. If twinned, refer to twinning kit instructions.
CODE: 1 + 2 Flashes.
RESULT: Blower on after power up- Blower runs for 90 seconds, if unit is powered up during a call for heat (R-W closed) or (R-W) opens during blower on delay.
RESULT: Blower on after power up- Blower runs for 90 seconds, if unit is powered up during a call for heat (R-W closed) or (R-W) opens during blower on delay.
CODE: 6 + 1 Flashes.
RESULT: Ignition lockout- Control will auto-reset after 3 hours. Refer to #6.
RESULT: Ignition lockout- Control will auto-reset after 3 hours. Refer to #6.
CODE: LED Off.
RESULT: Secondary voltage fuse is open- Check for: door switch not closed, 115VAC at L1 and neutral, 24VAC RED and COM BLUE, 24V Fuse 3A, short circuit in secondary voltage (24VAC wiring).
RESULT: Secondary voltage fuse is open- Check for: door switch not closed, 115VAC at L1 and neutral, 24VAC RED and COM BLUE, 24V Fuse 3A, short circuit in secondary voltage (24VAC wiring).
CODE: LED On.
RESULT: Control circuitry lockout- Auto-reset after one hour.
RESULT: Control circuitry lockout- Auto-reset after one hour.
CODE: LED SOLID.
RESULT: Gas valve relay stuck open- Flame sense circuit failure, software check error, reset power to clear lockout, replace control if status code repeats.
RESULT: Gas valve relay stuck open- Flame sense circuit failure, software check error, reset power to clear lockout, replace control if status code repeats.
See What Our Customers Are Saying:
Jan 14, 2020
Work was done on schedule, professionally, according to quote and with minimal inconvenience to building users. Very happy with the end result. The only area for improvement from my experience - need more timely quoting process.
Jan 13, 2020
The team was great! Very knowledgeable, professional and extremely helpful. A few days after install the unit didnt seem to be working, user error, but within minutes of contacting them..on a Saturday.. a tech was on the phone troubleshooting with us. I highly recommend Twintech for your cooling or heating needs. They stand by their products and a pleasure to deal with.
Jan 11, 2020
During the hottest week in the summer our old A/C decided to call it quits. I called Twintech Heating & Cooling after receiving a referral from a family member; came highly rated for being an honest, family-run business, who appreciates their customers. Dave was able to accommodate my hectic schedule and book a late evening appointment to walk through the specifics. Greg and Mitch arrived exactly on time a few days later, were very polite and friendly, and within a couple of hours had a new unit up and running. I also received a follow-up call to ensure we were happy with the Amana.
Jan 10, 2020
They were on time and very professional. I'm so glad I decided to go with Twintech, thanks!
Aug 20, 2019
Timely and appreciated - this was during the hottest days this year when our Air and Furnace way.
Efficient. Professional. No BS or overselling. What was promised, was delivered at a cost-effective price point.
Down to earth.
Aug 10, 2019
Professionally done and took care to cover all entry floors to the house for the installers to remove the old furnace and install a new furnace.
I also made recommendations of the tankless water heater that we had installed and items to address. We did not know they also installed tankless water heaters.
Jul 21, 2019
Price was not the cheapest nor the most expensive of my quotes. It's the quality of the installation that makes for a good AC system. The twins' knowledge & professionalism was evident in the small details:
Very clean work. Greg made sure that the refrigerant level & temperature were correct. They reinstall the insulation & vapor barrier around the wall. The outside electrical cords were secured to the wall. Proud to support this local company. Thank you.
Jun 11, 2019
Great team of guys came to do the work. Very professional. Arrived on time worked very efficiently and were very clean. They answered any questions we had without hesitation. The air conditioner works great and is so quiet. I highly recommend them and they don't try to up-sell anything right from the start.
May 10, 2019
The service was prompt, professional and very courteous. Competitive price. Would highly recommend this company.
Jul 20, 2019
Excellent workmanship, and quick response. Would recommend Twintech to anyone.