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.
Each of the following status codes is a two digit number with the first digit determined by number of flashes of the YELLOW L.E.D. and the second digit determined by number of flashes of the GREEN L.E.D.
If status code recall is needed, do not remove power or blower door. Briefly remove and then reconnect one main limit wire to display stored status code.
To initiate the component test sequence, shut OFF the room thermostat or disconnect the "R" thermostat lead. Briefly short the TEST terminal to the "COM24V" terminal. Status LED will flash code and then turn ON the inducer motor. The inducer motor will run for the entire component test. The hot surface ignitor, blower motor-heat speed and blower motor-cool speed will be turned ON for 10-15 seconds each. Gas Valve and humidifier will not be turned on.
CODE: CONTINUOUS OFF
RESULT: Check for 115VAC at L1 and L2, and 24VAC at SEC-1 and SEC-2
RESULT: Check for 115VAC at L1 and L2, and 24VAC at SEC-1 and SEC-2
CODE: CONTINUOUS ON
RESULT: Control has 24VAC power
RESULT: Control has 24VAC power
CODE: RAPID FLASHING
RESULT: Line voltage (115VAC) polarity reversed.
FIX: If twinned, refer to twinning kit instructions.
RESULT: Line voltage (115VAC) polarity reversed.
FIX: If twinned, refer to twinning kit instructions.
CODE: 1-1
RESULT: NO PREVIOUS CODE
FIX: Stored status codes are erased when power (115VAC or 24VAC) to control is interrupted or 48 hours after each fault is cleared.
RESULT: NO PREVIOUS CODE
FIX: Stored status codes are erased when power (115VAC or 24VAC) to control is interrupted or 48 hours after each fault is cleared.
CODE: 1-2
RESULT: BLOWER ON AFTER POWER UP (115VAC or 24VAC)
FIX: Blower runs for 90 seconds, if unit is powered up during a call for heat (R-W closed)
RESULT: BLOWER ON AFTER POWER UP (115VAC or 24VAC)
FIX: Blower runs for 90 seconds, if unit is powered up during a call for heat (R-W closed)
CODE: 1-3
RESULT: LIMIT OR FLAME ROLL-OUT SWITCH LOCKOUT
FIX: Control will auto reset after 3 hours. Reset switch or replace fuse link.
RESULT: LIMIT OR FLAME ROLL-OUT SWITCH LOCKOUT
FIX: Control will auto reset after 3 hours. Reset switch or replace fuse link.
CODE: 1-4
RESULT: IGNITION LOCKOUT- Control will auto-reset after three hours.
RESULT: IGNITION LOCKOUT- Control will auto-reset after three hours.
CODE: 2-1
RESULT: GAS HEATINGING LOCKOUT
FIX: Control will NOT auto reset. Check for: *Mis-wired gas valve *Defective control (Valve relay)
RESULT: GAS HEATINGING LOCKOUT
FIX: Control will NOT auto reset. Check for: *Mis-wired gas valve *Defective control (Valve relay)
CODE: 2-2
RESULT: ABNORMAL FLAME-PROVING SIGNAL
FIX: Flame is proved while gas valve is de-energized. Inducer will run until fault is cleared. Check for: *Leaky gas valve *Stuck open gas valve
RESULT: ABNORMAL FLAME-PROVING SIGNAL
FIX: Flame is proved while gas valve is de-energized. Inducer will run until fault is cleared. Check for: *Leaky gas valve *Stuck open gas valve
CODE: 2-3
RESULT: PRESSURE SWITCH DID NOT OPEN
FIX: Check for: * Obstructed pressure switch *Pressure switch stuck.
RESULT: PRESSURE SWITCH DID NOT OPEN
FIX: Check for: * Obstructed pressure switch *Pressure switch stuck.
CODE: 2-4
RESULT: SECONDARY VOLTAGE FUSE IS OPEN
FIX: Check for: *Short circuit in secondary voltage (24VAC) wiring.
RESULT: SECONDARY VOLTAGE FUSE IS OPEN
FIX: Check for: *Short circuit in secondary voltage (24VAC) wiring.
CODE: 3-1
RESULT: PRESSURE, DRAFT SAFEGUARD, AUX-LIMIT SWITCH (when used*) OR BLOCKED VENT SWITCH (when used) DID NOT CLOSE OR REOPENED (DOWNFLOW ONLY)
FIX: If open longer than five minutes, inducer shuts off for 15 minutes before retry. Check for: - Proper vent sizing - Defective inducer motor - Low inducer voltage (115VAC) - Defective blower motor or capacitor - Restricted vent - Excessive wind - Defective pressure switch - Inadequate combustion air supply - Disconnected or obstructed pressure tubing If it opens after trial for ignition period, blower will come on for 90 second recycle delay,
RESULT: PRESSURE, DRAFT SAFEGUARD, AUX-LIMIT SWITCH (when used*) OR BLOCKED VENT SWITCH (when used) DID NOT CLOSE OR REOPENED (DOWNFLOW ONLY)
FIX: If open longer than five minutes, inducer shuts off for 15 minutes before retry. Check for: - Proper vent sizing - Defective inducer motor - Low inducer voltage (115VAC) - Defective blower motor or capacitor - Restricted vent - Excessive wind - Defective pressure switch - Inadequate combustion air supply - Disconnected or obstructed pressure tubing If it opens after trial for ignition period, blower will come on for 90 second recycle delay,
CODE: 3-3
RESULT: LIMIT OR FLAME ROLL-OUT SWITCH IS OPEN
FIX: If open longer than 3 minutes, code changes to lockout #13. Flame roll-out switch requires manual reset. Check for: - Defective blower motor or capacitor - Dirty filter or restricted duct system - Loose blower wheel - Defective switch or connections - Inadequate combustion air supply (Flame roll-out switch or fuse link open) - Open Flame Roll-out Switch or fuse link. Manual reset or replace.
RESULT: LIMIT OR FLAME ROLL-OUT SWITCH IS OPEN
FIX: If open longer than 3 minutes, code changes to lockout #13. Flame roll-out switch requires manual reset. Check for: - Defective blower motor or capacitor - Dirty filter or restricted duct system - Loose blower wheel - Defective switch or connections - Inadequate combustion air supply (Flame roll-out switch or fuse link open) - Open Flame Roll-out Switch or fuse link. Manual reset or replace.
CODE: 3-4
RESULT: IGNITION PROVING FAILURE
FIX: Control will try three more times before lockout #14 occurs. If flame signal lost during blower on-delay period, blower will come on for 90 second recycle delay. Check for: - Control ground continuity - Flame sensor must not be grounded - Oxide buildup on flame sensor (clean with fine steel wool) - Proper flame sense microamps (.5 microamps D.C. min., 4.0 - 6.0 nominal). - Gas valve defective or gas valve turned off - Manual valve shut-off - Defective Hot Surface Ignitor - Low inlet gas pressure - Inadequate flame carryover or rough ignition - Green wire MUST be connected to furnace sheet metal.
RESULT: IGNITION PROVING FAILURE
FIX: Control will try three more times before lockout #14 occurs. If flame signal lost during blower on-delay period, blower will come on for 90 second recycle delay. Check for: - Control ground continuity - Flame sensor must not be grounded - Oxide buildup on flame sensor (clean with fine steel wool) - Proper flame sense microamps (.5 microamps D.C. min., 4.0 - 6.0 nominal). - Gas valve defective or gas valve turned off - Manual valve shut-off - Defective Hot Surface Ignitor - Low inlet gas pressure - Inadequate flame carryover or rough ignition - Green wire MUST be connected to furnace sheet metal.
See What Our Customers Are Saying:
Apr 1, 2019
Installation was done quickly and professionally. The new furnace is quiet and provides even heat.
Mar 3, 2019
They removed and discarded old furnace. Installed new furnace. Installed air intake pipe, that had never been installed by builder, no charge. Replaced loose hose on floor with hard pipe and rerouted it to drain, no charge. Almost 33% cheaper then quote from Enercare, which was the company we dealt with and had insurance with for 8 years. No yearly fee for cleaning/insurance, saves 300 a year. Courteous, professional, fast, and friendly. My wife and I have been recommending them to everyone we know and meet, and will continue to do so. Thanks for everything, Twintech!!!
Mar 4, 2019
This company was great to deal with. Our furnace went down and they installed a new furnace the next day with a lot of professionalism!
Feb 22, 2019
Finally! An honest company with highly knowledgeable and informative staff. Had a furnace service and found multiply errors in our system from an amateur installer. Very fair price to correct problems and will definitely use again.
Feb 16, 2019
Had to replace the heating & a/c unit in a condo apartment dwelling. this company recommended by the property manager and president of the condo building. found their workmanship and attention to details very good and very thorough. were able to resolve small problems and situations and happy to feel the heat in my unit. it's pricey, but happy was done by a very professional service. thank you.
Feb 13, 2019
Fantastic team. Completed the job as per the specifications and in under 3 hours. Highly recommended Twintech.
Jan 30, 2019
During the summer, I previously hired TwinTech to replace my air conditioner when it failed. They did an excellent job so when I decided to proactively replace the furnace I contacted them. The furnace I had was 22 years old and showed signs of internal leakage. It still worked but rather than wait to have it fail in cold weather, I decided to purchase a higher efficiency model before it failed and take advantage of energy efficiency rebates. TwinTech offered very useful advice on the make and model of furnace to choose including high efficiency and variable speed motor. The price was reasonable, TwinTech arrived at the allotted time, installed the new furnace (including some re-routing of exhaust lines since the existing ones were too close to other vents), removed the old furnace, tested the installation and cleaned everything up. Overall, it was a good experience, they did a great job and the new furnace is working well.
Jan 26, 2019
Greg came over at 9:30pm to rescue my daughter and I from a horrible experience with Enercare that evening. He was professional. Kind. And got us what we needed quickly and at an afford price. I would 100% recommend calling on Greg and his team for any of your heating and cooling needs in the future!!
Jan 24, 2019
Installed a great hot water heater when our old one failed. When my furnace died during cold weather they showed up quickly and my house was warm before my wife got home. :)
Jan 14, 2019
I dont usually right reviews but when you receive service like this I felt it was a must. Honest and fair. I Have 4 children and on Xmas eve my furnace stopped working and a gentleman came out and got me up and running so at least we would have heat for the holidays. As promised he would replace my furnace early in the new year. The job was completed on time, great price for quality furnace and extremely clean and professional job. Would have never known anyone was in the house. Not a spec of dust or mess from lugging out an old rusty furnace. If you have any ac or heating concerns twintech is your only option. I was royally impressed with and Im sure you will be too.