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I WAS NOT GETTING ANY HEAT SO I REPLACED THE IGNITOR. IT COMES ON AND GETS HOT ON THE FIRST TIME BUT THEN IT WON'T IGNITE AGAIN. IF IT SETS A WHILE THEN IT GOES THROUGH THE CYCLE AGAIN.

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Hi, you will need to change the coils on top of the gas valve. They are getting weak and will not open the gas valve later in the cycle.

Vic

Posted on Jul 03, 2009

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Why does the relay and control board keeps clicking the igniter doesn't come on, and furnance doesn't work?


It should only do that a few times then lock out necessitating reset by cycling the power at the furnace switch or at the t-stat. More than likely your hot surface ignitor is defective. Sequence should be something like this: Call for heat, combustion air fan initiates and blows for 30 seconds during a 'pre-purge' condition, then a relay clicks to energize the hot surface ignitor. If it does not ignite the flame within a few seconds, usually around 5 or 6 seconds, the ignitor relay clicks again and drops it out.

The flame sensing rod has to see flame to rectify the ground signal to the circuit board very quickly or else raw gas would continue to dump into the heat chamber. After the HSI relay drops out on flame failure the combustion air fan continues to run for a post purge cycle to purge the heat exchanger of any unburnt fuel before the sequence is initiated again.

Unplug the ignitor molex plug. It'll be within a few inches of the HSI itself. Insert a voltage test meter set to read 120 volts into the molex plug going TO the ignitor. Re-establish the call for heat, wait for a cycle of the relay clicks and steadily watch the meter. If the ignitor is bad, you should see 120 volts at the connection you are plugged in to AFTER the 30 second pre-purge. Watch closely, you may only have a 6 second window to see it because it will drop it out on flame failure.

Of course there are other issues that could be possible, but this is the most likely. If you do determine the ignitor is bad and you obtain a replacement DO NOT TOUCH the portion of the ignitor that glows (to ignite the gas) during assembly !!!! The oil from your skin will shorten the life expectancy TREMENDOUSLY.

Oct 29, 2014 | Dayton Gas Furnace Heater

1 Answer

Lighter come on but burnner do not come on


Hello,
The problem beleive it or not is that the bake igniter is weak ,and it is not drawing the proper amprage to open the gas valve.If you have a amp meter access the wires to the bake ignitor(usually behind the storage drawer) and check for 3.3-3.6 amps when oven is set to bake by clamping the meter around ONE wire wire of ignitor make sure only one wire,either one and not both.
if amp draw less than 3.3-3.6 amps replace bake ignitor. I know it seems improbable that if the igniter comes on that it could be the problem.Professional appliance technicians who would charge a average of $250.00 to repair your oven,have found when the ignitor comes on yet the oven won't heat that a weak ignitor is the cause 100% of the time.

GENE

Aug 17, 2011 | Whirlpool Ovens

1 Answer

Tappan Gas Range 36-30612302 oven does not get hot enough


The problem beleive it or not is that the bake ignitor is weak ,and it is not drawing the proper amprage to open the gas valve.If you have a amp meter access the wires to the bake ignitor(usually behind the storage drawer) and check for 3.3-3.6 amps when oven is set to bake by clamping the meter around ONE wire wire of ignitor make sure only one wire,either one and not both.
if amp draw less than 3.3-3.6 amps replace bake ignitor. I know it seems improbable that if the ignotor comes on that it could be the problem.Professional appliance technicians who would charge a average of $250.00 to repair your oven,have found when the ignitor comes on yet the oven won't heat to correct tempature that a weak ignitor is the cause 100% of the time

Aug 15, 2011 | Tappan TGF363 Gas Kitchen Range

2 Answers

My electric Tappan Custom oven model # 36-3058-00, oven will not ignition but glow plug glows red. How can I troubleshoot? What is wrong. Thanks Dan


Hello,



The problem beleive it or not is that the bake ignitor is weak ,and it is not drawing the proper amprage to open the gas valve.If you have a amp meter access the wires to the bake ignitor(usually behind the storage drawer) and check for 3.3-3.6 amps when oven is set to bake by clamping the meter around ONE wire wire of ignitor make sure only one wire,either one and not both.
if amp draw less than 3.3-3.6 amps replace bake ignitor. I know it seems improbable that if the ignotor comes on that it could be the problem.Professional appliance technicians who would charge a average of $250.00 to repair your oven,have found when the ignitor comes on yet the oven won't heat that a weak ignitor is the cause 100% of the time
I hope this helps Gene

Aug 03, 2011 | Tappan Kitchen Ranges

1 Answer

Kenmore Model No. 362.72505890 Gas oven will not get hot. The element comes on but the burner will not fire up. It did this last weekend but after rotating the temperature knob a few times it finally got...


Hi,

The ignitor is not working right and is going bad....
have the repair man replace the ignitor, or DIY....
Check out this tip about your problem...

Oven not Working or Oven not Heating

Oven Problems Replacing the Igniter


heatman101

Jun 30, 2011 | Kenmore Ovens

1 Answer

Igniter will heat up (glow), and oven may or may not light for 5 minutes (with igniter glowing). After heating, and stabilizing...once the oven starts to cool, igniter will glow again, and may or may not...


The stove should not take over 3 minutes to light. Even if the ignitor is glowing it is impossible to really tell if it is ok or not. When the ignitor heats up it's resistance drops, this allows for the amp draw to get to 3.2 amps or better and that opens the bi-metal inside the oven valve. The oven circuit consists of a control to regulate temp, a safety valve, a ignitor, and a burner. Any open component and the oven will not fire off. If all the components have continuity and the ignitor is glowing, but no joy, I would replace the ignitor. Usually the ignitor gets dim when it is weak and it takes a long time to light off and you might even have to bump the stove and get it to come on. Replace that ignitor.

Feb 02, 2010 | Ovens

1 Answer

RHEEM RGLE-10EQAGS Gas Furnace - Intermitent. Fans come on, Hot surface Ignitor comes on, then sometimes Gas Valve opens and all is fine, Other times, gas valve doesn't open and Hot surface Ignitor goes...


The sequence is Igniter comes on, valve comes on, flame sensor senses flame. If no flame is sensed after 3 tries, a lockout occurs. If you have a volt meter, check for 24-27 Volts AC coming to the gas valve, if your getting voltage to the valve but no gas, your gas valve is defective. It could be a intermittent problem, no matter, still a bad valve. if no voltage to valve, defective circuit board. 

Dec 29, 2009 | Heating & Cooling

1 Answer

No Heat


Hello
Welcome to Fixya


Remove the vent line from the rear and try the dryer.
If it heats then that means there is a clog or kink in the vent line blocking the vent air from exiting which will stop the dryer from getting hot!
If not then it's another one of these problems.

Defective Ignitor (Gas Only)
When heated the ignitor used on your gas dryer must obtain a specific high temperature
in order to activate the flame sensor. This ignitor is fragile and susceptible to cracking.
A hairline fracture that is barely visible to the naked eye is enough to change
the resistance of the ignitor to a point that is will not work properly.
You can test the resistance of your ignitor. You should get a reading of 50-400 ohms of
resistance.

If the ignitor gets hot and then goes off after about 10-15 seconds and there is
no ignition, the problem is probably not the ignitor. It is most likely the gas valve
coils that are defective.

If the ignitor comes on and stays on, it is the flame sensor that is defective.

If the ignitor is not getting hot it could also be one of the thermostats that is defective.
The power for the ignitor is passed from the timer, through all of the thermostats,
limit switches and fuses to the ignitor. So if you are not getting power to the ignitor
during ignition, you should check the continuity of the individual thermostats and fuses.
DRYER DOES NOT HEAT



Defective Gas Valve Coil (Gas Dryer Only)

If the gas dryer will light once but will not relight until it cools down, it is likely the gas valve coils are faulty. These coils loose some strength when subjected to heat. When they become old, the addition of heat may be enough to prevent them from opening the gas valve when hot. However the coils still work when when cool.

An easy way to diagnose the coils when the burner is not lighting, watch the ignitor. If the the ignitor glows for 10 to 15 seconds but no flame is created, then the coils are faulty. If the ignitor is not glowing the problem is elsewhere.

Recent Customer Symptoms:
The dryer burner doesn't always come on when starting. If the burner does come on, once it goes off if won't come on again until the dryer cools down.



Defective Flame Sensor (Gas Dryer Only)
The flame sensor's job is to monitor the ignitor for sufficient heat
to ignite the gas. A properly operating flame sensor will pass a
continuity check under room temperature.

Common Symptoms
If the flame sensor is defective in the open position,
the ignitor will not get hot when the dryer is started.
However, if it is defective in the closed position the ignitor
will get hot, but the flame sensor will not allow the flame to ignite.
In this case, the ignitor will usually stay hot for a long period of
time.



Defective Thermostat
The thermostats are responsible for maintaining the proper temperature
in the dryer. Check the exhaust temperature of the dyer and if the
temperature is above 150 degrees, you will most likely need to change
the operating thermostat.

The thermostat can also fail in the opposite mode.
It can prevent the element from heating at all.
A failed continuity check at room temperature will verify this condition.

There are some special thermostats that are single pole double throw.
These thermostats are often used to control the timer when set to the
Automatic Dry cycle. If the dryer timer will advance in the Timed Dry
cycle but not the Automatic Dry cycle, then the thermostat could be the
problem.


Defective Thermal Fuse
The thermal fuse is in series with one leg of power to the motor.
If the fuse is open (no continuity) the motor will not run.

Location:
The thermal fuse is located in different locations according
to the model and brand of dryer.

Solution:
Check the thermal fuse for continuity with a volt/ohm meter.
If it is open, it will need to be replaced






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Jan 25, 2009 | Kenmore 73952 Gas Dryer

1 Answer

Gas dryer don't heat, pilot ok


The ignitor is coming on so that means you have power to the gas assembly. Next the flame sensor should shut down the ignitor when the bi-metal inside it bends from the heat. This kills power to the ignitor, which allows for the power to activate the coils. The coils snatch open the gas valve and allow for ignition. The raw gas hits that screaming hot ignitor and ignites into a glorious flame, raising the temperature inside the drum. While that flame is on, the control thermostat is monitoring the heat within the drum. When the temperature gets to a round 140 F then the power gets killed to the gas assembly by the control thermostat. If all of that seems to be happening for say, the first time, then suddenly the ignitor comes on then shuts down and no flame comes out, then you have weak and intermittant coils. Replace these puppys:
1f4b423.jpg

Dec 16, 2008 | Dryers

3 Answers

Intermitten Heat up


make sure that your vent is not plug up can you go outside your house and feel good air coming out the vent when the dryer is turn on if so the only other things it could be is the coils that sit on the ignotor assmebly or the high limit termistat is not working properly the coils are little black circle coils that sit in the ignitor assmly should have a metal braket across the top of them holding them in you can check resistance on these coils if you have an meter

Mar 22, 2008 | Kenmore 72802 Gas Dryer

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