Question about Coleman York Dgat Gas Furnace Flame Sensor Rod 2702-311 2702-211p Pse-ec3 19663

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Hvac turns on and shuts off after 3 tries

So I changed the flame sensor and rollout switch. I can't figure what else could it be. The unit turns on, blower starts up, gas ignites, then shuts off. tries again, shuts off, and again. Then turns off completely. What could it be?

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Just to be sure this is a gas fired furnace? - what make and model?
behind most not all are sensors behind or near the blower fan - these little buggers are easily missed if you have one - jumper the wires and see if it fires if it does this sensor need replacing -

Posted on Mar 20, 2014

Testimonial: "it is a gas fired furnace. york heater and a/c all in one rooftop unit. it turns on and off 3 times and lockout. can it be pressure switch? circuit board? filter?"

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The heater turns on, but does not ignite. The fan runs for about 5-7 seconds then shuts off. I am assuming the heater needs a good cleaning?


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Jan 05, 2016 | Heating & Cooling

1 Answer

Burner lights. Flame pulls away from burner and sensor. Unit shuts off


The first thing I would do is check burners to make sure they are clean. Often if rust particles or carbonsoot come loose from inside of the heat exchanger they can partially clog burner opening which causes increase in gas pressure to fewer ports.This can make the flame roll out of burner compartment shutting off flame rollout switch.With burners off turn thermostat down so that furnace won't come on and inspect burners. If they are dirty you can use shop vac with crevice tool to clean most of them. If needed the burners can be removed for cleaning. Usually all you have to do is raise up on the back end of burner and slide it backwards to clear air shutter and burner orifices and then remove. Clean one at a time and put them back in the same position they were in.When they are all back in furnace reset flame rollout and check furnace.
If burners are not dirty then I would have service tech. check gas pressure and repair as needed. Hope this helps you. Thanks

Dec 14, 2010 | Honeywell Heating & Cooling

1 Answer

What are the carrier 8000ts led error codes?


They are listed inside the front panel of the main unit.

LED CODE

EACH OF THE FOLLOWING STATUS CODES IS A TWO DIGIT NUMBER WITH THE FIRST

DIGIT DETERMINED BY THE NUMBER OF SHORT FLASHES AND THE SECOND DIGIT BY

THE NUMBER OF LONG FLASHES.

STATUS

11 NO PREVIOUS CODE - Stored status code is erased automatically after 72

hours. On RED LED boards stored status codes can also be erased when power

(115 VAC or 24 VAC) to control is interrupted.

12 BLOWER ON AFTER POWER UP (115 VAC or 24 VAC) -Blower runs for 90

seconds, if unit is powered up during a call for heat (R-W closed) or R-W opens

during blower on-delay.

13 LIMIT CIRCUIT LOCKOUT - Lockout occurs if the limit or flame rollout switch is

open longer than 3 minutes.

- Control will auto reset after three hours. - Refer to #33.

14 IGNITION LOCKOUT - Control will auto-reset after three hours. Refer to #34.

21 GAS HEATING LOCKOUT - Control will NOT auto reset.

Check for: - Mis-wired gas valve -Defective control (valve relay)

22 ABNORMAL FLAME-PROVING SIGNAL - Flame is proved while gas valve is

de-energized. Inducer will run until fault is cleared. Check for:

- Leaky gas valve - Stuck-open gas valve

23 PRESSURE SWITCH DID NOT OPEN Check for:

- Obstructed pressure tubing. - Pressure switch stuck closed.

24 SECONDARY VOLTAGE FUSE IS OPEN Check for:

- Short circuit in secondary voltage (24VAC) wiring.

31 PRESSURE SWITCH DID NOT CLOSE OR REOPENED - If open longer than

five minutes, inducer shuts off for 15 minutes before retry. Check for:

- Excessive wind - Proper vent sizing - Defective inducer motor

- Low inducer voltage (115VAC) - Defective pressure switch

- Inadequate combustion air supply - Restricted vent

- Disconnected or obstructed pressure tubing

- Low inlet gas pressure (if LGPS used)

If it opens during blower on-delay period, blower will come on for the selected

blower off-delay.

33 LIMIT CIRCUIT FAULT - Indicates a limit, or flame rollout is open. Blower will

run for 4 minutes or until open switch remakes whichever is longer. If open

longer than 3 minutes, code changes to lockout #13. If open less than 3 minutes

status code #33 continues to flash until blower shuts off. Flame rollout switch

requires manual reset. Check for: - Restricted vent

- Proper vent sizing - Loose blower wheel - Excessive wind

- Dirty filter or restricted duct system.

- Defective blower motor or capacitor. - Defective switch or connections.

- Inadequate combustion air supply (Flame Roll-out Switch open).

34 IGNITION PROVING FAILURE - Control will try three more times before lockout

#14 occurs. If flame signal lost during blower on-delay period, blower will come

on for the selected blower off-delay. Check for: - Control ground continuity

- Flame sensor must not be grounded

- Oxide buildup on flame sensor (clean with fine steel wool).

- Proper flame sense microamps (.5 microamps D.C. min., 4.0 - 6.0 nominal).

- Gas valve defective or gas valve turned off - Manual valve shut-off

- Defective Hot Surface Ignitor

- Low inlet gas pressure

- Inadequate flame carryover or rough ignition

- Green/Yellow wire MUST be connected to furnace sheet metal

45 CONTROL CIRCUITRY LOCKOUT Auto-reset after one hour lockout due to;

- Gas valve relay stuck open - Flame sense circuit failure

- Software check error

Reset power to clear lockout. Replace control if status code repeats.

If status code recall is needed, briefly remove then reconnect one main limit wire to display

stored status code. On RED LED boards do not remove power or blower door before initiating

status code recall. After one status code recall is completed component test will occur.


Thanks for Choosing FixYa.


Kelly

Oct 05, 2010 | Heating & Cooling

1 Answer

The flame rollout switch keeps kicking out. Theirs no flame rollout,i put new burners in it, everything looks good. unit may stay on and run for 3 or 4 cycles,and sometimes it wont stay on 30 seconds.Ive...


Try adjusting gas pressure. There might be an inline rollout switch that looks like an inline fuse. If that is the case several techs might over look it. The best thing to check is the schematics for the furnace in the owners manual. If you follow the low voltage, you will definately see if there is a rollout switch. If it is a new unit it has one somewhere. If you paid a company to change the burners, call them to get your money back. I have only changed burners on old janitrols where there was a factory problem with the design. They are a stationary device that has no moving parts and therefore very rare if they break. The tech probably did not know and got nervous. Call the comapny and talk to the manager about the problem. You should not have to pay for parts that were not broken.

Dec 12, 2009 | Heating & Cooling

1 Answer

Heat would not come on and fan would not cut off even when thermostat was set to off. Took off the outside panel of the unit and red light was blinking 7 times - rollout switch fault. Since fan would not...


this means that the rollout switch was tripped by a flame coming from burners. could be a plugged fue or bad inducer motor, or a bad rollout switch. the fan will not shut off as a safety feature it keeps running incase the heat exchanger is to hot to keep a fire from starting. it will shut off after disconnecting power and restarting everything. watch the flames from burner when it lights to see if the actually roolout of the burner box toward the rollout sensor.

Dec 08, 2009 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

I have a carrier furnace


you have a flame rollout switch tripped or a limit switch open. in either case you should call a hvac service company. how old is your unit? the carrier unit is designed to run the fan contin. in the event of either of these failures.

Jan 25, 2009 | Heating & Cooling

1 Answer

Arcoair central heat /air conditioning unit


The blower motor kicks on when there has been a 24 volt control failure.

This usually means that a limit switch has tripped.

Most likely that would be a high temp limit switch or a rollout switch.

First, make sure the filters are clean. and the evap coil is clean. If eaither are dirty/clogged, it will partially block airflow, causing the furnace to overheat, causing the high temp limit to trip.

A rollout switch typically trips for three reasons.
1 flame rollout into the burner compartment due to poor airflow.
2 overheating af teh metal plate the rollout is mounted to, due to dirty, old, rusted components.
3 a bad limit switch.

If your unit has an LED light, count the flashes and it will hepl popint out the problem.
(locate the wiring diagram/flash code list, and correspond the flash count, with the code.)

First, check filters.

Jan 14, 2009 | Heating & Cooling

2 Answers

Flame rollout sensor keeps tripping


sounds like your burners need to be cleaned, you will need to pull them out and clean the rust out of them. the rust builds up on top of the burners and when you gas valve opens and fills the burners full of gas you will have a roll out of flames. hope that helps.

Dec 30, 2008 | Heating & Cooling

1 Answer

Hvac


dirty flame sensor

Oct 28, 2008 | Goodman Heating & Cooling

1 Answer

Coleman Evcon Furnace Model G8T10012UHB11A


you probably have a cracked heat exchanger which is causing the rollout switches to trip.even the tiniest of cracks will cause the fan to blow the flame back into the unit and cause them to trip. check the heat exchanger for even the tiniest of cracks if so replace it. and be sure to have a carbon monoxide alarm in your home.

Oct 25, 2008 | Heating & Cooling

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