HVAC

Have HVAC Questions? Ask an HVAC Expert for Answers

Ask an Expert,
Get an Answer ASAP!

HVAC

Pressure switch error on my trane xl14c unit. Looking for a

Customer Question
Pressure switch error on my...
Pressure switch error on my trane xl14c unit. Looking for a reset button but can't locate it
JA: How old is the appliance? Have you gotten error messages before?
Customer: No, think it's about 10 yrs old
JA: Do you plan on doing the work yourself?
Customer: Yes, I've been inside the unit. I cleared the valves, tried sucking on the tubing and made sure no obstructions
JA: Anything else we should know to help you best?
Customer: Blower seems to run fine, just not igniting
Submitted: 27 days ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 1 day by:
11/21/2017
HVAC Technician: Webb-Guy, HVAC Mechanic replied 26 days ago
Webb-Guy
Webb-Guy, HVAC Mechanic
Category: HVAC
Satisfied Customers: 2,337
Experience: maitenance tech at casto
Verified

Hello, and welcome to JustAnswer. My name is ***** ***** I will be the one to assist you. Sorry to hear that you are having this trouble. I apologize for the extended wait time you experienced, I've only just come online now and would like to assist you with your question if you are still needing help that is?

Ask Your Own HVAC Question
Customer reply replied 22 days ago
please, I described the issue already. Only update is that I replaced the pressure switch but it still won't ignite. Blower comes on but no ignition and error code says it's a pressure switch issue
HVAC Technician: Webb-Guy, HVAC Mechanic replied 22 days ago

have you tested the ignitor yet?

Ask Your Own HVAC Question
Customer reply replied 22 days ago
How would I do that
HVAC Technician: Webb-Guy, HVAC Mechanic replied 22 days ago

do you have a multimeter?

Ask Your Own HVAC Question
HVAC Technician: Webb-Guy, HVAC Mechanic replied 22 days ago

ok ​so I need you to test the ignitor to see if it has continuity?

Ask Your Own HVAC Question
Customer reply replied 22 days ago
Please give detailed instructions rather than just a sentence at a time. Please provide a series of steps.
HVAC Technician: Webb-Guy, HVAC Mechanic replied 22 days ago

My apologies I am not trying to be short I was just dealing with a few other things as well. This video should certainly help you with testing this part to see if this is where the issue lies.

https://youtu.be/GYG7kA5uqjk​

Ask Your Own HVAC Question
Customer reply replied 19 days ago
I searched for the ignitor, please see attached as it looks very different from the one in the video, also it did not have two terminals, but when I put both ends of the meter on the single terminal I did not get a read of anything more than an ohms or two.
Customer reply replied 17 days ago
Please reply
HVAC Technician: airheatman, HVAC Technician replied 17 days ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8,584
Experience: Furnace, A/C and heat pump specialist.
Verified

My name is***** you are getting a pressure switch error, the igniter has not come into play yet.Disregard earlier comments and lets see why pressure switch is not being recognized as closed..Give me complete furnace model from label on inside of furnace so I can give instructions specific to your unit.

Ask Your Own HVAC Question
Customer reply replied 17 days ago
At work now, will do that this evening.
HVAC Technician: airheatman, HVAC Technician replied 17 days ago

Sounds good. What we will do is allow the inducer motor to start,then verify whether pressure switch is closing or not.Could be that it is closing but board is not recognizing it closed. As soon as board recognizes pressure switch closed ignitor should start sparking.Until it does we will get no igniter.

You can test continuity on the switch after inducer starts to verify if it is closing.

If not closing you can take a jumper and bypass the pressure switch to see if error will go away.(Just for testing purposes).Note :we have to allow inducer to start first as inducer will not start unless switch is "open"

Ask Your Own HVAC Question
Customer reply replied 17 days ago
Can you tell me how to do the continuity test? I assume use an ohmmeter, and what should I see?
HVAC Technician: airheatman, HVAC Technician replied 17 days ago

If your meter has sound it should beep.If not give me model on meter and I will look it up

Ask Your Own HVAC Question
HVAC Technician: airheatman, HVAC Technician replied 16 days ago

Try bypassing pressure after inducer starts

Ask Your Own HVAC Question
Customer reply replied 16 days ago
Sorry, not sure how
HVAC Technician: airheatman, HVAC Technician replied 16 days ago

Take a jumper wire and connect the pressure switch terminals together,That will simulate it being closed.

Ask Your Own HVAC Question
Customer reply replied 16 days ago
Ok will need to get a jumper wire. Will let you know
HVAC Technician: airheatman, HVAC Technician replied 16 days ago

If you have a couple of alligator clips you can make one

Ask Your Own HVAC Question
Customer reply replied 16 days ago
Ok and the wire would just connect the terminals on the pressure switch
HVAC Technician: airheatman, HVAC Technician replied 16 days ago

We want to actually connect the wires If you can partially unplug from swicth you can place jumper on terminals.

Ask Your Own HVAC Question
Customer reply replied 15 days ago
Here is a picture of jumper wire connected along with wires to terminal. The blower did not come on this way. When I removed connectors and just had the jumper wire on the cables the blower comes on but get the same error and no ignition.
Customer reply replied 13 days ago
Any thoughts?
HVAC Technician: airheatman, HVAC Technician replied 12 days ago

Jumper has put in place AFTER inducer starts.

Ask Your Own HVAC Question
Customer reply replied 12 days ago
start system and blower then connect jumper....that correct
Customer reply replied 12 days ago
Just to be clear, before I try again......the set up should be the same as I sent in the picture, with the wires on the terminals, but just add the ends of the jumper wire to the terminals AFTER the blower has started, correct?
Customer reply replied 11 days ago
Progress, I jumped it. Ignitor lit and blinking led was constant, which I believe means normal call for heat.So gas and ignition work, what should I do now?
HVAC Technician: airheatman, HVAC Technician replied 11 days ago

Next we have to decide if pressure switch is bad or inducer is not pulling suffiocient vacuum to close it.Remove hose from inducer housing and leave it attached to the pressure switch. Power off and back on to reset board again, Then call for heat at thermostat. Allow inducer to start then suck on the end of hose still attached to pressure switch and see if switch will close and burners ignite.

Ask Your Own HVAC Question
Customer reply replied 7 days ago
Ok, yes, did what you said and got it to ignite. First had to reset the flame rollout switch, but once I did it ignited.
Customer reply replied 6 days ago
Also, I just went to trip the pressure switch to get some heat into the house. Ignition was successful but after a couple minutes the flame rollout switch opened....not sure if this gives you ideas on what is wrong
HVAC Technician: airheatman, HVAC Technician replied 5 days ago

While the furnace is running, watch the flame and tell me if the characteristic of flame is changing like blowing around or rolling out and getting close to the rollout switch.Id sounds like a bad heat exchanger

Ask Your Own HVAC Question
Customer reply replied 5 days ago
Would fixing the heat exchanger likely also fix the suction to the pressure switch?
HVAC Technician: airheatman, HVAC Technician replied 5 days ago

Absolutely.If heat exchanger is allowing the burners to fluctuate, that would also effect the vacuum on the pressure switch.

Ask Your Own HVAC Question
Customer reply replied 5 days ago
OK, I work now, but will look later, where is the heat exchanger...what should I look for (I'll look at the flame again, but when I've done it I haven't seen the flame move blowing around or rolling out, but I'll check again).....pretty solid gas smell.If it needs replaced, do you know where I can get one and estimate how much it might be?
HVAC Technician: airheatman, HVAC Technician replied 5 days ago

If issue is heat exchanger, you may want to check and see if it might be covered under warranty.If you had to pay to replace, you can buy a new furnace cheaper.

Toss a tablespoon of salt in blower and see if flame color turns all orange.

Ask Your Own HVAC Question
Customer reply replied 5 days ago
Good news, bad newsGood, heating exchange is under warranty (though I haven't looked at it)Bad news, I went to trip the pressure switch and the led on the motherboard went out.Ugh
HVAC Technician: airheatman, HVAC Technician replied 5 days ago

Is there a fuse on control board?If so look and see if maybe it just blew little fuse.

Ask Your Own HVAC Question
Ask airheatman Your Own Question
airheatman
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8,584
8,584 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

6,877 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
Collector flue box gets extremely hot to touch. It's a
Collector flue box gets extremely hot to touch JA: Just to clarify, what type of fireplace is this? Customer: It's a furnace JA: Do you plan on doing the work yourself? Customer: Yes JA: Anything else… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
58MVP080 model got the heat exchanger issue. I have tech
Hi Pearl,58MVP080 model got the heat exchanger issue … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
90% secondary heatexchanger holding a lot of water in it,
Bryant 90% secondary heatexchanger holding a lot of water in it, not allowing the pressure switch to close. I removed the 3 hoses at the top (2 large 1 small) of the plastic trap and drained the water… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
Need a heat exchanger for model GIN 80bu-1000 14B-3A; ser. #
need a heat exchanger for model GIN 80bu-1000 14B-3A; ser. # 1607K 03798 … read more
airheatman
airheatman
HVAC Technician
8,584 satisfied customers
In 2003, we had a new high-end Carrier Infinity Weathermaker
In 2003, we had a new high-end Carrier Infinity Weathermaker furnace installed - Model 58MVP-100-20 (run on propane). 8 years later, in 2011 - while still under warranty (parts and labor) the main hea… read more
airheatman
airheatman
HVAC Technician
8,584 satisfied customers
Is it unsafe to have a cracked heat exchange on your
Is it unsafe to have a cracked heat exchange on your furnace? … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I need a heat exchanger kit for a weil-mclain ultra 105, no
i need a heat exchanger kit for a weil-mclain ultra 105 … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,877 satisfied customers
How do I check heat exchanger for blockage. Today. Sounds
how do I check heat exchanger for blockage JA: I'll do all I can to help. How long have you been dealing with this? Customer: today JA: Do you plan on doing the work yourself? Customer: yes JA: Anythi… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
When were stainless steel heat exchangers required for
When were stainless steel heat exchangers required for residential usage and/or what HVAC company was the first to provide them. And are they as effective as touted.… read more
D.E. Anderson
D.E. Anderson
Industrial Refrigeration Service Manager
200 satisfied customers
Funky smell coming from heat exchanger outside...... repair
funky smell coming from heat exchanger outside...... repair guy said the gas not m ixing with the air properly..true? said probably just clogged … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Heat exchanger is a month old and heat stopped working.
Heat exchanger is a month old and heat stopped working. Three lights are blinking saying it is a limit or rollout switch … read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,142 satisfied customers
I have a property with a Keeprite heat exchanger installed.
I have a property with a Keeprite heat exchanger installed. I believe the filter is clogged but I don't know where it's located. The model is PGF018K040E … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,877 satisfied customers
The condensation water leaks from heat exchanger near the
The condensation water leaks from heat exchanger near the filter and comes on the ground tray. There is no blockage of any sort. What needs to be done for auxiliary condensation tray if it is cracked.… read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,142 satisfied customers
How can I clean the inside of the heat exchanger on my
how can I clean the inside of the heat exchanger on my furnace? … read more
airheatman
airheatman
HVAC Technician
8,584 satisfied customers
My carrier heating heat exchanger is plugged. I understand
My carrier heating heat exchanger is plugged. I understand it is civered under a recall action. if bI purchase a new systeem 59mn7a080-20 what price drduction do I receive? … read more
airheatman
airheatman
HVAC Technician
8,584 satisfied customers
How much time should be allowed to change a heat exchanger
How much time should be allowed to change a heat exchanger for a 48tjf016 series 580ba and 2 men?… read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,142 satisfied customers
I have Yorx High efficiency tubular heat exchanger, im not
Hi, my name is***** have Yorx High efficiency tubular heat exchanger, im not sure wich model though GY9S , GM9S, or GF9S. There is water leaking from the white PVC pipes, can I just cut them out and r… read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,142 satisfied customers
I was looking into a trane tud060 heat exchanger and noticed
I was looking into a trane tud060 heat exchanger and noticed a buildup of white powder at one of the factory seams and need to know what is causing this. I attached a pic. Thanks… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 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