HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Connect one-on-one with {0} who will answer your question

Related HVAC Questions
I installed a furnace i bought at an auction. it is a cmf3
i installed a furnace i bought at an auction. it is a miller cmf3 70-pg. it had a corner dented and i installed it. irving propane said it was legal and hooked up my propane! before installing i chang… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,437 satisfied customers
Keep getting 4 flashing red lights on the control panel,
Keep getting 4 flashing red lights on the control panel, have gone through the gas furnace lighting instructions. Same result. … read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
10,428 satisfied customers
Trying to find the reset switch on a nordyne furnace. Came
trying to find the reset switch on a nordyne furnace. Came home from the hospital to a freezing could house. blowers working, but not blowing warm air … read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
10,428 satisfied customers
I have a nordyne cmf series mobil home furnace with a hsi
I have a nordyne cmf series mobil home furnace with a hsi ignition box . I changed out the power burner motor because it would not ignite for more than 5 sec it ran a full cycle but now it shows a ope… read more
Daniel Plourde
Daniel Plourde
plumbing, hvac technichian
Vocational, Technical or Trade School
619 satisfied customers
I have the exact same thing happening with my furnace. Did
I have the exact same thing happening with my furnace. Did they ever come up with an answer to this problem? I have a Miller Model CMF 80 PG Conv. It will not start. ICustomer QuestionI have a Miller … read more
hvacdave84
hvacdave84
Lead Service Technician
Vocational, Technical or Trade School
117 satisfied customers
I have a 1.5 year old gas furnace that will fire sometimes,
I have a 1.5 year old Miller gas furnace that will fire sometimes, sometimes it takes 2 or 3 tries, sometimes it has to be reset more than once before it will fire, code says it does not sense a flame… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
10,428 satisfied customers
I have a MILLER Furnace model cmf-80-pg-coo1 with a gas fired
I have a MILLER Furnace model cmf-80-pg-coo1 with a gas fired burner pg-B-2 DI Nordyne they are telling me that the Motor is shot. Fasco no. 7121-4921 Is this a common fix? it looks pretty simple to r… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
10,428 satisfied customers
I HAVE A NORDYNE FURNACE (MIMC070ABW) ITS ABOUT 7 YRS OLD .
I HAVE A NORDYNE FURNACE (MIMC070ABW) ITS ABOUT 7 YRS OLD . THE CODE COMING UP IS LOCK OUT DUE TO FAILED IGNITION. I CHECK TO SEE IF IT WAS GETTING GAS UP TO THE FURNACE AND IT IS. WHAT COULD BE THE P… read more
M Oglesby
M Oglesby
Vocational, Technical or Trade Scho
2,038 satisfied customers
I have a nordyne/miller (model CMF 80-PG conv.)natural gas
I have a nordyne/miller (model CMF 80-PG conv.)natural gas furnace in my mobile home. Last year I replaced the ignitor and it work fine. This year the furnace will not even begin to start (not even th… read more
hvac-technician
hvac-technician
Service Manager
Vocational, Technical or Trade Scho
62 satisfied customers
i need a detailed step by step sequence of operation of 80+
i need a detailed step by step sequence of operation of 80+ and 90+ furnace i need voltages pre-purge and post purge details i really need step by step details also i need a trouble shooting ladder di… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
10,428 satisfied customers
I have a Triangle tube Nat Gas PG30 Performance Boiler. It
I have a Triangle tube Nat Gas PG30 Performance Boiler. It has a hard time starting and you can hear and feel the combustion popping hard enough to shake the vent pipe when you are upstairs (boiler is… read more
servtech50
servtech50
HVAC/R service tech
296 satisfied customers
My nordyne miller cmf, wont ignite, it flashes 3 times Is
My nordyne miller cmf, won't ignite, it flashes 3 times? Is there anything I can do to fix it. I followed the instructions to restart it by turning off the thermostat, power, gas, and turn them back o… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,447 satisfied customers
WE have a Miller cmf80-pg gas furnace. The motor will kick
WE have a Miller cmf80-pg gas furnace. The motor will kick on and it will cycle 3 times and lock out. It does not do this everytime. If we turn the thermostat down and back up it will run for a while.… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,437 satisfied customers
I have a Miller Model CMF 80 PG Conv. It will not start. I
I have a Miller Model CMF 80 PG Conv. It will not start. I replaced the igniter because that has gone bad three times before. I know the fan is good because it runs on the manual setting. I tried the … read more
M Oglesby
M Oglesby
Vocational, Technical or Trade Scho
2,038 satisfied customers
I have a 10 year old Miller Mobile Home Furnace- nat. gas CMF
I have a 10 year old Miller Mobile Home Furnace- nat. gas CMF 80 Po conversion with a Nordyne PGB-2-DI burner. The control module which is a United Technologies 1018 Series Hot surface ignitor is shor… read more
Dan Linger
Dan Linger
Lead Technician / Energy Consultant
Bachelor's Degree
62 satisfied customers
I have a ruud silhouette ii that stops at step 6 of the below
I have a ruud silhouette ii that stops at step 6 of the below sequence, so I'm not sure if the gas valve is opening. 1. Draft inducer blower starts. 2. Draft inducer switch proves pressure. 3. Ignitio… read more
Matthew
Matthew
HVAC Technician
Bachelor's Degree
2,014 satisfied customers
I have a Luxaire Model PBLU-LD08N040A natural gas furnace that
I have a Luxaire Model PBLU-LD08N040A natural gas furnace that when main burners light, is delayed - lights rough. I've tried repositioning the HSI and also checked gas pressure. What else could I try… read more
coolman1973
coolman1973
AC/Heat Tech
Vocational, Technical or Trade Scho
162 satisfied customers
i have a miller mobil home forced hot air furnance cmf 80 po,
i have a miller mobil home forced hot air furnance cmf 80 po, the unit starts and runs ok for 51 to 20 times, then thermastat calls for heat and nothing happens. if i turn off the burner switch on the… read more
master appliance tech
master appliance tech
Owner / Operator
Vocational, Technical or Trade School
1,792 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.

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

10,938 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

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

1,029 satisfied customers

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

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

A-1 Tech

A-1 Tech

Service Manager

526 satisfied customers

I have been in the HVAC business for over 40 years.

< Previous | Next >

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