HVAC

Have HVAC Questions? Ask an HVAC Expert for Answers

Ask an Expert,
Get an Answer ASAP!

HVAC

Red Light: one short, two longs; Could not locate meaning

Customer Question
Red Light: one short...
Red Light: one short, two longs; Could not locate meaning for the code
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: Several days; Actually the furnace was acting up (turning on/off) at the beginning of spring. Didn't use the central A/C this summer, as had window A/C in bedroom.
JA: Did you check the furnace's filters?
Customer: Filter was dirty; replaced it several days ago. We had extended fall weather here, so the need for heat has been limited; so using space heater until solve problem with furnace.
JA: Do you plan on doing the work yourself?
Customer: If possible.
JA: Anything else we should know to help you best?
Customer: Research suggests replacement of igniter, but have not identified it yet.
Submitted: 1 year ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 7 minutes by:
11/23/2016
HVAC Technician: airheatman, HVAC Technician replied 1 year ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8,765
Experience: Furnace, A/C and heat pump specialist.
Verified

Allow fan to run 90 seconds and let me know if this error code goes away.Then call for heat at thermostat and see if furnace will work or if it gives us a different code..WE will go from here.

Ask Your Own HVAC Question
Customer reply replied 1 year ago
I have let furnace run several times; same result;Forgot to mention that I installed a new thermostat yesterday. I may have crossed wires first time, as A/C was running versus furnace. After correcting wires, furnace continues as before--start/stop, without igniting. I have to turn it off and then back on for it to start; but then same results over/over again.
HVAC Technician: airheatman, HVAC Technician replied 1 year ago

What error do you get when it stops before you reset power?

Ask Your Own HVAC Question
Customer reply replied 1 year ago
Bryant Plus 90 gas furnace; stopped working properly last spring--would start/stop after I turned toggle switch on at furnace. Did not use furnace for central air all summer, as used window A/C in bedroom. With cool/cold weather coming, have been researching furnace situation. Replaced filter, as was very dirty. Replaced thermostat yesterday. Learned about LED light message today, short and two longs; but could not located interpretation for lights.
Customer reply replied 1 year ago
23 November 2016 10:55
Bryant Plus 90 gas furnace; stopped working properly last spring--would start/stop after I turned toggle switch on at furnace. Did not use furnace for central air all summer, as used window A/C in bedroom. With cool/cold weather coming, have been researching furnace situation. Replaced filter, as was very dirty. Replaced thermostat yesterday. Learned about LED light message today, short and two longs; but could not located interpretation for lights. Research suggests may need to replace igniter, but have not located igniter. Interested in obtaining owner's manual for my furnace, and any additional help available.
Customer reply replied 1 year ago
Now (after running fan, then requesting heat); LED light flashes 3 short rapid times followed by four longer times.
HVAC Technician: airheatman, HVAC Technician replied 1 year ago

Not sure where you are getting info from but the 12 error code does not indicate an igniter issue.

The one two will occur anytime power is turned off and back on to furnace.This will flash for 90 seconds and blower will run.After 90 seconds, blower should stop and error change to continuous on.

The 34 you are getting now indicates possibly a dirty flame sensor. See diagnostic chart here:

Ask Your Own HVAC Question
Customer reply replied 1 year ago
Now: Turned furnace off and back on; LED light gave one short and two long message.
HVAC Technician: airheatman, HVAC Technician replied 1 year ago

Lets start by cleaning your flame sensor and see if that solves the problem. Below is a ink to a generic video explain how to clean the flame sensor.

https://www.youtube.com/watch?v=tYwR9qL4lnk

Ask Your Own HVAC Question
Customer reply replied 1 year ago
This time, LED light flashed three short times and four longer times.
HVAC Technician: airheatman, HVAC Technician replied 1 year ago

Lets start by cleaning your flame sensor and see if that solves the problem. Below is a ink to a generic video explain how to clean the flame sensor.

https://www.youtube.com/watch?v=tYwR9qL4lnk

Ask Your Own HVAC Question
Customer reply replied 1 year ago
Bryant 90 Plus - short cycling last spring; managed without furnace until warm weather arrived and stayed. Did not use central air over summer, as used window A/C in bedroom. Now in fall, with temperatures at freezing outside (in Minnesota), furnace short cycles. I removed and cleaned the flame sensor with a dollar bill and with some Scott Brite scouring material. Tried not to be too aggressive with cleaning, so as not to damage part. Reinstalled the sensor. Furnace LED light indicates 12 initially after I turn it on manually. Several rounds of short cycling, me turning on the switch off and on to get the furnace to run produces codes of 12, then 34 multiple times, then 14 for lock-out. I don't believe that my furnace is igniting, and probably has not ignited since late last winter. Any suggestions on what I should try next?
Customer reply replied 1 year ago
I will look for the hot surface igniter.
Customer reply replied 1 year ago
Bryant 90 Plus - short cycling; probably started last spring; managed without furnace until warm weather arrived and stayed. Did not use central air over summer, as used window A/C in bedroom. Now in fall, with temperatures at/below freezing outside in Minnesota, furnace is needed. Installed new thermostat. Removed and cleaned the flame sensor using a dollar bill and some Scott Brite scouring material. Will get sand paper tomorrow. Reinstalled the sensor. Furnace LED light indicates 14, 12 and 34 during several rounds of turning switch off and back on. Plan to remove the ignitor part, if can tackle by myself. Furnace does not appear to be igniting. There was water dripping from the top part of unit, after the A/C unit ran for a while, although the condensation pump appears to be getting rid of water from pump. Any suggestions on what I missed, or should try next?
HVAC Technician: airheatman, HVAC Technician replied 1 year ago

The 12 is normal after power up. The 14 and 34 both still indicate board is not sensing flame.If you had water in furnace it is very possible board itself has got wet and will have to be replaced. My next step would be to get a meter and determine if the board is getting at least 2 micro amps from flame sensor.If so replace board.Below is a video showing how to test this.

https://www.youtube.com/watch?v=a5u044OJBc4

Ask Your Own HVAC Question
Ask airheatman Your Own Question
airheatman
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8,765
8,765 Satisfied Customers
Experience: Furnace, A/C and heat pump specialist.

airheatman is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future.

JimmyBagley, IA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Phil

Phil

Mechanical Engineer

6,938 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

Rick Mather

Rick Mather

HVAC Technician

3,133 satisfied customers

35 years experience, HVAC

Matthew

Matthew

HVAC Technician

2,014 satisfied customers

14 years experience in the HVAC field of service, installation, Manual J & D calculations

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

953 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

Rick Ridley

Rick Ridley

UK Heating Engineer

871 satisfied customers

Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

< Previous | Next >

Related HVAC Questions
I have a gibson furnace and the ignitor wont turn on. I
I have a gibson furnace and the ignitor wont turn on. I checked the resistance and it was 89. … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Can't get my heat to stay on. Checking filter. It comes on
It comes on than goes off it got a programmable mode… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I have a payne model pg8jaa/maa. It is not igniting. My wife
I have a payne model pg8jaa/maa. It is not igniting. … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I have a Raypak model 59 spa heater. It was used last night
HI pearl, I have a Raypak model 59 spa heater. It was used last night and was operating normally. About 3 hours after using the spar I heard a buzzing noise from the heater , I turned the ac power off… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,938 satisfied customers
I have a Kelvinator/Klectrolux split system Model ESE21hra,
I have a Kelvinator/Klectrolux split system Model ESE21hra, which keeps switching off after about 30 minutes operation. I have it on the cool setting of 25 degrees C, fan speed medium, and I believe t… read more
Michael Ferryman
Michael Ferryman
86 satisfied customers
My thermostat on my whirlpool hot water heater allows the
My thermostat on my whirlpool hot water heater allows the water to be too hot, after I changed both elements. … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
Its freezing outside, my furnace is new, and I have a RT
Its freezing outside, my furnace is new, and I have a RT Honeywell. I have tried to get the heat to come on and it wont. It says the internal temp is 64. No matter how much I turn it up, it wont come … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
Trying to see if old Ruud deluxe 90 furnace works. Dotted it
Trying to see if old Ruud deluxe 90 furnace works. Dotted it have a pilot light or hsi? I cant find a manual on this thing,and we hanger no idea whether to start to figure out if it works or needs rep… read more
airheatman
airheatman
HVAC Technician
8,765 satisfied customers
Thermostat will heat to set temp then kicks out only to not
Thermostat will heat to set temp then kicks out only to not kick on at the temp required but if I take cover off stat kicks back on , batteries have been replaced and connections are tight Maple chase… read more
HvacmanSean
HvacmanSean
Owner
HVAC
228 satisfied customers
Air con model AOTR09JEC- orange timer light flashing two
Air con model AOTR09JEC- orange timer light flashing two times consecutively a break then flashes twice consecutively again … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,938 satisfied customers
Replace one coil for BAY96X1415 assembly. American
Replace one coil for BAY96X1415 assembly. American Standard/Trane. is there a part number for that. … read more
airheatman
airheatman
HVAC Technician
8,765 satisfied customers
I would need a Honeywell thermostat AIR Conditioner
I would need a Honeywell thermostat AIR Conditioner specialist how much does it cost for questions? … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,938 satisfied customers
Our munchkin contender heater will not ignite. Turned power
Thanks. Turned power on an d . I think it's been down since this morning. I tried … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
My air conditioner keeps on cutting off after I turn it on.
My air conditioner keeps on cutting off after I turn it on. The light is green and sometimes two light in green continue to beep … read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,142 satisfied customers
I have a flashing yellow light on the front of my Furnace
I have a flashing yellow light on the front of my Bryant Furnace Model CNPVP/CNPVT. Flashes 6 times. I noticed that the heat was not firing up, but could hear something running inside the furnace. I r… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I've got an am a na, Saying open primary or auxiliary limit,
I've got an am a na JA: I'll do all I can to help. How long have you been dealing with this? Customer: Saying open primary or auxiliary limit JA: Do you plan on doing the work yourself? Customer: What… read more
airheatman
airheatman
HVAC Technician
8,765 satisfied customers
I have a waterfurnace geothermal heating system. I need
I have a waterfurnace geothermal heating system. I need someone in the Minneapolis area to come to my house and check the fluid temp and pressure. It runs a lot in cold weather and my house feels cold… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,938 satisfied customers
I have an old GE combination heating and AC unit. It has a
Hello. I have an old GE combination heating and AC unit. It has a wall thermostat, a transformer, a plenum thermostat, a fan limit control, a gas valve model 36C03 type 222 and a Honeywell R8222B rela… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,938 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x