Braemar Gas Ducted Heater flashes 'reset' - it lights the furnace OK but then heater shuts it off and green LED flashes 7 times - ignition lockout.

Question edited for clarity, 'duck heater' to 'Ducted Heater'. I presume you are not heating ducks, quack quack? :>D

Try a Power Cycle, turn off at the mains for 5 minutes and then reconnect. It is gas though and needs servicing by a qualified gas technician. It has a fan and sensor to remove gas so it doesn't blow the house up when it ignites. Turn it off and don't use it.

https://www.google.com/search?q=Omega+ducted+heater+IHE+100-3

This link will find you a service agent near where you live in Australia.

https://www.google.com/search?q=Omega+ducted+heater+service+near+me

..

I agree that it sounds like a circuit board problem. So far as I'm aware, shutting off the power and turning it back on should cause the furnace to reset.


But wait and get some additional opinions on this oddball symptom would be my suggestion.
Thanks guys! The Thermostat is applying power. Both limit switches OK. The 2 microswitches attached to the air pressure lines are OK except one stays closed & one open sensing fan air I guess. Zero voltage read between green & white 120VAC input wires. I don't know what else to check. The darn circuit board will not reset and LED gives 2 flashes for lockout, and it means TOTAL LOCKOUT. Could you guys give me an idea how to go about buying a board to try? The only place near me just about doubles the price unless you are a HVAC company. Do I need to replace the part of the board that says "White-Rodgers" on it or just the green circuit board. Thanks again for helping.
Checked for thermostat voltage to Red & W1, checked limit switches, checked for 0 volts between green & white line input voltage, checked for loose connections. Red LED continues to flash 2 times after power recycled for reset.
Gas valve & igniter receive no power. I don't know what else to check. Does anyone have any more ideas to prove circuit board is bad?


My Trane furnace model is XV80, model # TUD100R9V5H6. If circuit board, do I replace the white box labeled "White-Rodgers, Model 50A51-507" or just the small green circuit board labeled "American Standard 21C148501P01?


I appreciate any more help you could give me including where to buy the board.
Thanks! Mickey

Trane XV80 hard lockout, 2 flashes, Can't be reset - DoItYourself ...

www.doityourself.com > ... > Gas and Oil Home Heating Furnaces

Jan 10, 2013 - The only way I can get diagnostic Red LED light to reset is to switch ... a2 flash with absolutely no operation from the furnace does seem to ..... inducer gets a demand you should get a pressure switch error code 3. ... the flame sensor wire and giving the furnace a heating demand after resetting power twice. Luxaire Furnace Blowing Cold - 8 Red LED Flashes
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cause this fault. 2 RED FLASHES: This indicates that thenormally open pressure ... The furnace will lock out for one hour and then restart. 7 RED FLASHES: This fault code indicates that the flame could not be established. This no-light ... problem. Bothheating and cooling operations will be affected. Check

Hi Vulcan Bonaire,

Is this a ducted gas heater or a free standing gas heater???

Improper ground from control to burner.
Incorrect electrical wiring, check polarity.
Tubing partially clogged between inducer and proving switch.

A sampling of various failure codes on a furnace:

Read one LED flash that stays on continuously to mean your furnace has no signal coming from the thermostat and will not operate. Turn the power off and check the thermostat for improper settings or connections.

Interpret one LED flash that blinks on and off to mean your furnace has locked out because it could not ignite after three tries, and must be reset. Interrupt power to your furnace for 20 seconds or lower the thermostat so your furnace does not try to heat, then reset the thermostat to the previous setting. After one hour of lockout, your furnace will automatically reset itself and try to operate as usual.

Decipher two LED flashes to mean the draft blower is not working, or your furnace has a short in the pressure switch circuit. Turn off the furnace power and repair a short or replace the pressure switch.


Read three LED flashes to mean your furnace has an open pressure switch circuit or it has an induced draft blower operating. Check the pressure switch hose of your furnace for blocks or an improper connection. Also, look for blockages in the flue, and tighten any loose wiring.

Translate four LED flashes to mean your furnace has a primary limit circuit open, possibly from loose wiring or blocked filters. Check and clean filters, tighten wiring and check the flue for blockages.

Interpret five LED flashes to mean your furnace senses a flame without a call for heat. This could be from a gas valve closing slowly or a burner flame lingering.



Read seven LED flashes as a warning of a low flame sense microamp signal. This could happen with a coated flame sensor or a lazy flame from poor gas pressure. Turn off the power and adjust the gas pressure according to the information on the rating plate.



See eight LED flashes as meaning an igniter circuit problem due to a bad igniter or an igniter connected improperly. Replace the bad igniter or check the ground wiring, making necessary corrections.



Decipher nine LED flashes to mean the high-stage pressure switch circuit will not close during a high-stage-induced draft blower operation. Your furnace may have a pinched or blocked pressure switch hose, a blocked flue or loose wiring.

Read continuous flashing on the LED to mean your furnace has a reversed polarity of 115 volts. Turn off the power and correct the wiring polarity after reviewing the wiring diagram.

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

Usually a lockout code means it tryed so many times and then it locks out or stops. First, when a furnace is locked out you have to kill the power to the furnace to reset the lockout. I don't know this furnace but there are manual resets around the burner called flame rollout switches that have buttons in the middle that have to be pushed back in. Also the power vent has to come on when the furnace gets the signal from the thermostat. This is proven by a flow switch with a rubber hose on it. The next step is a 30 sec. purge, then the igniter glows or sparks and then the main burner comes on.
The other switches are hi limit on the front wall of the heat exchanger. That might get you started. If you have anymore questions [email protected]

Error Codes
A green LED indicates system faults
Steady On: System OK
Steady OFF: Board control fault or no power applied
1 Flash: Ignition failure (control in one-hour lockout)
2 Flashes: Pressure switch fault, fails open (switch is
stuck open)
3 Flashes: Limit switch open (main or auxiliary)
4 Flashes: Pressure switch fault, fails closed (switch is
stuck closed)
A yellow LED indicates flame status
Steady on: Normal flame is sensed
Flashes: As flame weakens, frequency of LED flashes
increases

After the gas turns on, it is the flame sensor's job to see that ignition took place and send 24v to the gas valve. If it does not do this, the gas valve shuts down as a safety precaution. After 3 tries, the furnace will go into "lockout" and will not let it attempt to start again. The lockout can be resolved by turning off the power to the furnace for a couple minutes and then turning it back on. Sounds like the real problem is a faulty flame sensor not sending 24v to the gas valve. Sometimes they can be cleaned with a piece of sandcloth. This will cure failure to recognize the flame due to carbon build up on the sensor. Otherwise, the sensor will need to be replaced. Hope this helps!

1
1 FLASH
Furnace fails to operate.
• Integrated control module
diagnostic LED is
flashing ONE (1) flash.
• Furnace lockout due
to an excessive
number of ignition
“retries” (3 total)1.
• Failure to establish flame.
Cause may be no gas to
burners, front cover
pressure switch stuck open,
bad igniter or igniter
alignment, improper orifices,
or coated/oxidized or
improperly connected flame
sensor.
• Loss of flame after establishment.
Cause may be
interrupted gas supply, lazy
burner flames (improper gas
pressure or restriction in flue
and/or combustion air
piping), front cover pressure
switch opening, or improper
induced draft blower
performance.
• Locate and correct gas
interruption.
• Check front cover
pressure switch
operation (hose, wiring,
contact operation).
Correct if necessary.
• Replace or realign
igniter.
• Check flame sense
signal. Sand sensor if
coated and/or oxidized.
• Check flue piping for
blockage, proper
length, elbows, and
termination.
• Verify proper induced
draft blower performance.

stadt ducted heater wont ignite