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Hello, This is the old G60 ignition control from Johnson Controls.
The chattering can be from a couple things..
Flame sensor in the pilot (metal rod) is not sensing the flame....fix is to use steel wool and clean sensor.
Bad ignition control - here is where the control is getting the flame signal but doesn't know it. = Replace control
Bad gas valve - The reason the flame sensor doesnt;t sense flame is because it drops out due to a bad gas valve.
The most common failures are dirty flame sensor and then ignition control.
Flame sensor in the pilot (metal rod) is not sensing the flame....fix is to use steel wool and clean sensor. I replaced the pilot 1st
Bad gas valve - The reason the flame sensor doesnt;t sense flame is because it drops out due to a bad gas valve. I replaced the entire gas valve 2nd
Bad ignition control - here is where the control is getting the flame signal but doesn't know it. = Replace control This I have not done. Will this cause the chattering? Where is this control located and what should it cost more or less
When you replaced the pilot did you replace the sensor?
And yes..the control will cause a rapid chatter.
When you replaced the pilot did you replace the sensor? I replaced the thing that connects to the gas line and has 2 wires to reconnect. Was that the sensor?
It has a white ceramic base and attach's to the sense terminal on the control
If you have the furnace model number I can be more specific...but most of these were mounted on top of the gas valve.
I see no pictures or attachments. Do you have the furnace model number?
Does it look like this
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Your Going to kill me the furnace is carrier not lennox can you still help,,, if not I will ok your payment. Sorry for taking so much of your time, Thank You
Not a problem...I am just as familiar with Carrier. Does this furnace have a pilot light with 3 wires...green, yellow and white?
it lights when it starts to spark so it must be elec. ignition and it is either on or off its not like my hot water heater where the pilot is always lite
if this is the electronic 3 wire pilot then your odds are the pilot is bad...when you replaced the gas valve did it have 5 terminals on top?
does the pilot go out when chattering or just main
sorry for delay....
With pilot lit, use a short wire or jumper and connect terminals 1 and 5 on the gas valve...terminal 5 gets power to open pilot gas.....the pilot gets power at the same time...the 24v is sitting at the pilot waiting for the warp switch to heat and make....once the switch warps it sends power to terminal 1 for main gas....by jumping 1 to 5 we are bypassing the pilot assembly and strictly are testing gas valve and circuit board.
Try this test and tell me if the chatter persist. NOTE- this is just for a test to not permanently bypass 1 to 5 as this circumvents the safety
well the pilot doesnt drop so we know we have a steady 24 v to the terminal 5....by taking a known 24v and jumping to 1 we supply a steady 24 for main....if it still chatters we then look at wire connections on the common side back to and including the circuit board...
If you need any follow up let me know....I hate to lose so keep in touch.
Just return to this same thread. I thank you!
Do you have a "LP Low Pressure Switch" mounted on valve or before valve in gas line?
see here and tell me if the pressure switch shown is attached to the valve.
No there is nothing like this anywhere.... when I bought the new valve I them it was for propane also the orface was different on the pilot
...Is there an ajustment on the valve body that would raise the pressure?
The Propane Low Pressure
(LPLP) Kit monitors the gas line pressure with a pressure switch and disables the unit gas valve if the line pressure
drops below acceptable levels.
Yes there it is...one for pilot....smaller cap about the size of a pea...and a main gas adj ..larger cap about the size of a dime.
By jumping those terminals we discussed will rule out if there is a gas issue with pilot.
It still is not working..COULD IT BE THE LOCK OUT TIMER ...MODEL 990-141-1
Did you jump Terminal 1 to terminal 5 when pilot was lit?
The jumping of terminal 1 to 5 will verify if pilot is culprit...Of course with the new finding of the lock out timer this can change things. Being LP you must keep a lockout control in the circuit....but for testing purposes, you could bypass the lockout timer and then observe operation and if needed jump the terminals as discussed.