Question about Heating & Cooling

Open Question

I have a Miller FURNACE model cmf80-pg. the moor will stay humming but it will not light has automated ignitor and it will not fire. PLEASE HELP!!!

Posted by on

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
Therinnaiguy
  • 1420 Answers

SOURCE: Furnace Ignitor

At what point does the pilot blow out? Within 5 seconds after it lights or when the room air blower turns on?

Posted on Dec 03, 2007

Ad
  • 189 Answers

SOURCE: I have a goodman gmpn 100-4 REVB furnace that will not stay lit

If the igniter lights the burners the ignitor..... is not bad. Its like a light bulb.... it works or ot doesn't.
You are describing a dirty flame sensor. Dishonest contractors will sell you a new ignitor but clean the flame sensor when the are installing the ignitor. It is located at the opposite end of the burners than the ignitor. It has one wire going to it. Remove it and clean the rod with a piece of fine grit sandpaper. this should be done every year before heating season.
Good luck

Posted on Mar 29, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: GOODMAN GAS FURNACE. IGNITOR GLOWS, GAS FIRES FOR

I suspect that the flame is not traveling to all the burners within a given time so the flame sensor is shuting down the gas valve. Clean out the flame rail where the flame travels and carefully brush off the flame rod with an old tooth brush.

Posted on Oct 20, 2009

james3751
  • 614 Answers

SOURCE: miller gas furnace not firing but the fan turns on

The Miller furnaces sometimes will do that. Does this have surface ignitor that glows. Kill power to furnace for few seconds and turn it back on. See if it will go thri the cycle and see if coil glows. If not chances are coil is bad. Need to call service tech for free estimate. Rus

Posted on Nov 07, 2009

james3751
  • 614 Answers

SOURCE: I have an Evcon furnace Model # DGAT075BDF. It

Does your fan work from the on position. New tstat may have RC and RH need to jumper them. If that does not work. Turn on tstat check voltage on board at furnace between w and c if you have voltage you may have a bad board. Also see if there is any reset buttons like on the roll out switches. Smaa red buttons. Push them to reset. Let me know what going on. Rus

Posted on Dec 03, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Goodman gas furnace model number gms80904bna won't light. Changed the flame sensor and the ignitor is bright orange please help


Obvious that the unit isn't getting gas to the ignitor.
To receive gas to the ignitor, there is a gas valve located upstream of the burners.
Have a friend turn on the heat while you are up close to the furnace.
Once the ignitor gets hot, there will be an audible "click" at the gas valve when the low voltage controls call for the gas valve to open to supply gas to the burners.
Listen for it.
If you hear a click, and the furnace still isn't firing, you need to check to see if someone has closed the gas shut off supply valves located on the gas line.
If all the shut off valves are open, you need to verify you have gas pressure in front of the gas regulator.
If you verify have pressure on the upstream side of the regulator, you will need to verify there is also pressure downstream of the regulator.
If there is gas pressure upstream but none downstream, replace the regulator.
If you have pressure downstream of the regulator, and the gas valve clicks, but furnace doesn't light, replace the gas valve.
LP has higher pressure than natural gas, and is dangerous.
LP is heavier than air and will sink to the floor or lowest area.
One static electricity spark is all it takes and an explosion can occur.

Nov 01, 2017 | Goodman Heating & Cooling

1 Answer

Furnace will not stay lite, flashes pressure valve closed


Too much or too little pressure. Check for air blockage or an ice blockage inside or outside the house. Were flames good color when lit?

Nov 12, 2014 | AO Smith Miller / LSI / Home / Nordyne...

1 Answer

I have a Miller durance model cmf80-pg. the moor will stay humming but it will not light has automated ignitor and it will not fire. PLEASE HELP!!!


Can you turn the squire cage by hand?
If there's no obstruction holding the motor most likely the capacitor has gone bad.
You can check it with a multimeter.
Please let me know if you need further assistance and if this fix your problem. Thanks

Nov 10, 2014 | Dryers

1 Answer

Furnace goes through start up sequence normally, ignitor fire, gas comes on, ignitor goes off, but gas only stays on for about 10 seconds then system restarts all over again.


Not knowing the make or model of your furnace I can only guess that either the flame rod is dirty or bad, the flame spreader tray is dirty or you have a bad ground off of the PC board. You could also have a bad intermittent pilot if your system has one. The flame rod is located in front of the burner at the last one that fires up. It will have only one wire going to it. The flame spreader tray connects each burner together and the gas flows down it.

Mar 12, 2011 | Heating & Cooling

1 Answer

Why heater coils glow?


It sounds like you're describing one of two things. The hot surface ignitor in a gas-fired furnace, or the resistive heat strips in an electric furnace.

The hot surface ignitor in a gas-fired furnace lights the burners. This ignitor in modern furnaces serves the same purpose as the standing pilot flame did in older furnaces. It provides the required heat to ignite the gas at the burners. Without an ignition source, a gas-fired furnace cannot provide heat. When the ignitor is activated it will glow bright orange or yellow.

The resistive heat strips in an electric furnace actually provide the heat to a home or building. When the furnace turns on, the heat strips are activated and usually glow orange when they reach peak temperature. In almost all cases, the heat strips are not easily seen or accessed without removing covers or panels inside the furnace.

Feb 28, 2011 | Heating & Cooling

1 Answer

It does not fire at all times igniter works, I can hear the gas valve when opens, some times it fires for a minute and some times does not fire at all


Problem: Your furnace will not ignite the gas to produce heat for your home. When a furnace has a bad ignitor what I see most of the time is the following sequence of operation:


1. Thermostat calls for heat. 2. Draft inducer motor starts. 3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes. 4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas. Solution:You probably need to purchase and install a new ignitor. I would suggest that you inspect your ignitor closely for cracks. Make sure you do not touch the ignitor with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, rollout switch problem. The furnace's control board might not be supplying the voltage to the ignitor. If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but most of the time they can be cleaned an will work well after cleaning.

Dec 07, 2010 | Heating & Cooling

1 Answer

I AM WORKING ON A CARRIER 90% FURNACE. IT WILL NOT FIRE UP. IT SHOWS A 34 CODE. THE IGNITOR DOES NOT ENERGIZE FROM THE BOARD. NO POWER COMING FROM THE BOARD. I HERE A CLICK AS IF IT IS TRYING BUT NO...


Problem: Your furnace will not ignite the gas to produce heat for your home. When a furnace has a bad ignitor what I see most of the time is the following sequence of operation:


1. Thermostat calls for heat.

2. Draft inducer motor starts.

3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes.

4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas. Solution: You probably need to purchase and install a new ignitor. I would suggest that you inspect your ignitor closely for cracks. Make sure you do not touch the ignitor with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, rollout switch problem. Please see "limits, rollout switches & furnace control boards" further down on this page. The furnace's control board might not be supplying the voltage to the ignitor. If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but most of the time they can be cleaned an will work well after cleaning.

Nov 25, 2010 | Heating & Cooling

1 Answer

I have an Evcon furnace Model # DGAT075BDF. It


Does your fan work from the on position. New tstat may have RC and RH need to jumper them. If that does not work. Turn on tstat check voltage on board at furnace between w and c if you have voltage you may have a bad board. Also see if there is any reset buttons like on the roll out switches. Smaa red buttons. Push them to reset. Let me know what going on. Rus

Dec 03, 2009 | Heating & Cooling

1 Answer

Miller gas furnace not firing but the fan turns on


The Miller furnaces sometimes will do that. Does this have surface ignitor that glows. Kill power to furnace for few seconds and turn it back on. See if it will go thri the cycle and see if coil glows. If not chances are coil is bad. Need to call service tech for free estimate. Rus

Nov 06, 2009 | Heating & Cooling

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

102 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

3087 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...