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Goodman 90+ gas furnace is tripping flame rollout switch when furnace lights.I have checked the gas pressure and it is o.k. any suggestions?

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Check your vent and inducer blower for either an obstruction or water in a low spot.

Posted on Feb 09, 2010

Testimonial: "Thanks for the answer,it sounds like it definitely could be the problem with this furnace. "

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Top rollout switch triggers with blinking code *6*, Furnace only runs with cover off


restart unit as soon as your inducer fan came on pump the 2 wires to pressure switch and wait to see how long it stay also watch the flame at the burner

Jan 27, 2014 | Goodman GMS90703BXA Heater

1 Answer

Furnace was working fine and just stopped working...it reacts to raising the thermostat but doesnt actually flame on


This is probably a ignitor.


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.
Please leave feedback... Thanks...

Jan 28, 2011 | Goodman GMS90703BXA Heater

1 Answer

Rollout switch continues to trip


If you have a cracked heat exchanger this will cause the flames to rollout and trip this switch. Its meant to stop the furnace from running and putting carbon monoxide in your home. Watch the furnace as it tries to light if when the gas valve opens and flame is established it should go into the tubes heat the heat exchanger and then your main blower motor will come on. When your main blower comes on is usually when you see the flames rollout and trip that switch. If this happens you can either buy a heat exchanger or new furnace if its a older unit Obama still has that awesome tax credit til 12-31-2010.

Dec 13, 2010 | Goodman Heating & Cooling

1 Answer

My circuirt board has a rapid flashigh trouble light, and the blower does not shut off. What seems to be the problem?


with just the information you have provided, i would guess you have a rollout sensor somewhere that has been tripped. there are usually a push button reset on the goodman models. this usually happens when you have flame outside the heat exchanger and is not a good thing. i have seen some goodmans where the wiring for the safety sensors is melted from the flame rolling out due to a crack in the heat exchanger. it this is the case, you need to replace the heat exchanger or consider getting a new furnace. the safety wiring on most goodmans is usually purple. trace all the purlple wiring and see if some of it is melted or if any of the push button switches has tripped. on a high efficiency model, there will be several wires and rollout switches located along the top of the burner box above the burners.
good luck. by the way, anytime a safety has been tripped, the fan will default to the on postion as a precaution in case the furnace has got too hot. that may explain the fan running all the time.

Nov 20, 2010 | Goodman GDS80904BNA Open Flame Heater

1 Answer

Where is the heat sensor on a goodman furnace


Heat sensor....Or a flame sensor. Flame sensor is connected to a "single" wire under the buners usually found on the left side. Heat sensors (or flame rollout switches) are found surrounding the burner box. The most common bad one will be located just above the burners. it "should" have a small reset button in the middle just between the two wires. If the furnace does light even for a short time the rollout switch is not bad.

Mar 03, 2009 | Goodman GMS90703BXA Heater

3 Answers

Code #33 on Bryant 355MAV 90i Furnace


'Limit or flame rollout switch is open'. In my case, the flame rollout switch had tripped due to an overheating? I had to push the button between the wire leads to reset the switch. Then when I turned the power back on, the furnace started up like normal.

Why did the switch overheat and trip? My current theory is that there was a rubber grommet around a pipe near the switch that had slid down and was no longer sealing the furnace?

Mar 01, 2009 | Goodman CLJ30AR32 Air Conditioner

1 Answer

Heating not working


There could be a number of other potential causes.
1-Ignitor failure
2-vent blockage
3-tripped rollout safety switch
4- tripped limit control
Etc...
Look at the door of the unit for a explaination of the number of flashes of the light. This may get you started in the right direction.

Jan 10, 2009 | Goodman GMS90703BXA Heater

1 Answer

Code continous flashing


If your igniter comes on but no ignition, that eliminates the possibility of a bad or clogged pressure switch, high limit or flame rollout switch. Sounds to me like you have a control board, or a gas valve going bad. Could even be some loose, corroded, or faulty wiring. Before the igniter comes on the furnace does a self diagnostics to ensure everything is working, or the furnace will not make it to the igniter sequence. Inducer motor, pressure switch/s, limit controls are closed…then comes on the ignitier, gas valve opens, pilot runners and burners ignite, flame sensor detects the flame, blower comes on and all operations are working.

Hope this helps

Oct 27, 2008 | Goodman GDS80904BNA Open Flame Heater

3 Answers

Goodman GMP075-3 ignition problem


Goodman gmp075-3 gas furnace and the flame cycles for 4 sec

Oct 01, 2008 | Goodman GDS80904BNA Open Flame Heater

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