Oil furnace cad cell and relay

[@tom-mm8tf]

Best instructor around, wish you were my service manager

[@robertthum9251]

I would like to thank you for your unselfish videos. They have helped a lot of folks have a warmer life. It's good to know that folks like you are out there to help people that have some technical knowledge but lack the information to apply them. May God Bless.

[@grayfurnaceman]

Thanks for the support. GFM

[@mrblack8715]

Thanks for the helpful video! I got my Cad Cell cleaned and furnace back running again in 5 minutes after watching your tutorial....

[@grayfurnaceman]

Welcome GFM

[@jameskeenan5763]

Wow. My wife came down and said there was no hot water. I watched a few of your videos and finally got around to this one. It was the exact problem, a little carbon on the cad cell. I will call my furnace guy tomorrow, but I am avoiding an emergency call tonight. Thank you!

[@mattc2518]

Matt C. from Portland, OR Sir, I thank you. I consider myself handy, but no expert. I had flame, I have oil, but the furnace kept timing out. I checked the cad sensor, looked good, but cleaned it anyway. Still kept timing out. I let the furnace cool down for awhile (important) and reached my hand down in there and realized that some of the fire proof packing had fallen down into the burn hole, thus blocking the cad sensor from seeing the flame. Cleaned that out, and now running great. Your video didn’t offer up that suggestion (you may want to include in the future), but I would have never thought of that without your whole explanation.

[@JIMTHOME2112]

THANX BROTHER! THIS IS THE SECOND TIME YOU BAILED ME OUT WITH YOUR KNOWLEDGE AND EXPERTISE . THE THOME FAMILY THANKS YOU SIR.

[@ricardoballeste656]

Thank you for taking time to organize and thoroughly explain the function of these devices. You took us out of a frigid bind. Health to you and yours.

[@grayfurnaceman]

+RICARDO BALLETS Welcome GFM

[@NealVio]

You also saved me a service call, about $135 for me. It ran out, I filled with diesel, pressed the reset twice which led to lockout mode. Learned how to bleed the system, and this video explained why I shouldn't reset it again, and how to get it out of lockout mode, and after bleeding the system I got the heat working again. Yes!!! I finally learned more about these Honeywell devices and how they work, and how to get the system working again. A Big Thanks!

[@grayfurnaceman]

Welcome GFM

[@bburns4097]

Hey Grayfurnaceman, this isn't about how much money you saved me... but, more about the respect I have for you sharing your time & knowledge - Thank you!FYI - I have one cousin, one nephew, and one brother-in-law all making a living in the hvac trades... none of which either could or would help me diagnose issues with my ~40 year old, forced-air, oil burner furnace. It's finally working great and I owe it all to your educational "how to" trouble-shooting Video's.After working through the frustrations of learning the safe operational workings of the oil fired burner, I now know why the above mentioned relatives wanted nothing to do with my furnace. By the way, and thanks to you, I have learned these heat units are simple and reliable if you properly maintain and service them at correct intervals.In closing, I love my "Frankin-Furnace" so named because of all the borrowed parts, it's running great because of what I learned from you.B.

[@grayfurnaceman]

Thanks for the support. GFM

[@jacquesboch2637]

Thanks, You published in 2012 and I benefit in 2017. Great work, took me 2 minutes to fix the prob

[@henrynevins1]

I want to thank you for saving me $100, plus having heat again. My fuel oil tank ran out, my fuel man refilled it, but I knew that I'd have to bleed the pump of air, something I've done before. I hit the reset from the modern electronic version of the cad cell you described. Needed to hit reset twice because all the air wasn't out, then nothing, I was locked out. Found your video, held the reset for 45 seconds and wow! pump began running, Bled just a little more out and had a flame. Now everything is fine. Can't thank you enough.

[@grayfurnaceman]

+henry nevi's Welcome GFM

[@normanpoolharries4977]

henry nevins

[@BourneAccident]

Thanks for the trick about resetting from restricted mode. I had changed my oil filter last night and forgot to bleed the air out. Later on when the boiler didn't start, I bled the filter and tried to bleed the air at the burner, but I had hit the reset too many times. Finally, at 3am I found your video and now I have heat. Wife thanks you too!

[@joetheut3056]

I have to thank you and I really hope you know how much your video"s help people like myself out. I'm just a hard working guy like most that doesn't have the extra cash to say screw it and call a repair man the first hint of a problem. The cad cell carbon was all my furnace needed but the repair guy would have charge me 80 just for his drive. Again thank you.

[@grayfurnaceman]

Glad it helped. GFM

[@1yoaky]

I LOVE YOU MAN!!! After hours/days of troubleshooting I went back to youtube for the 5th time and finally found your GREAT Video!!!!! THANK YOU!!!!!!!!

[@back2backband1]

Thank you! You saved me $250.00 (since i was just quoted that) its new years eve and a sunday and no oil delivery today and serviceman charge more since its Sunday and a holiday weekend. I have never bled a burner before and your directions worked like a charm. Thank you and happy new year

[@grayfurnaceman]

Happy new year. GFM

[@ynrokopnhoj]

Thanks for the video. The 45 sec reset was all I needed to get furnace to light off. Guess it must be time to have the furnace cleaned.

[@vintage-jm2fv]

This video has saved the day 2 times for me now. Thx from Toronto

[@grayfurnaceman]

Welcome GFM

[@devinmccloud]

Best explanation on youtube. Thank you!

[@steverone7623]

my oil heater just stopped working. thinking its the capacitor on the burner motor your videos are helping me immensely thank you I subscribed

[@margaretpicozzi2949]

Thanks for the tip on the lockout. you saved me visit from the oil company!

[@grayfurnaceman]

Welcome GFM

[@joelcoward2048]

I just want to thank you for sharing your knowledge Godbless you sir

[@grayfurnaceman]

Thanks for the support. GFM

[@brucejackson4663]

Excellent, concise, informative....great video...thank you

[@johnlakey4983]

Thank You. I teach HVAC Survey Level at High School Level for a Public School.

[@grayfurnaceman]

I also have a background in HVAC teaching. I taught intro HVAC in a private school. You are welcome to use any of my videos in your class. GFM

[@annielee2897]

Thank you for your very helpful help.

[@grayfurnaceman]

Welcome GFM

[@brianchv3661]

Great job Gray

[@grayfurnaceman]

Thanks for the support. GFM

[@aarongraebner7066]

You seem like the man for this. I recently replaced a Coleman furnace that was about 25 years old with a much newer miller with a Beckett af15 burner assembly. The furnace worked in the house it was removed from. After installing it in my mobile home it fires instantly when the motor starts, stays fired for half a second then flame goes out and the motor still runs till the timeout. the happens each time it is reset. This is supposed to be a delay start. My tank is full with a new filter installed coming off it. I ran about a gallon of oil out the bleeder with no air for the last half of it. The cad eye tests good. The cad relay on this unit has 4 wires aside form the cad cell wires. Black, white, orange and purple. The clean cut valve is wired with the burner motor on the orange wire . The ignition is wired separately on the purple wire. I am reasoning that the valve is receiving power whenever the motor is running and some sort of delay was built into the vale which is malfunctioning.

[@grayfurnaceman]

+Aaron Graebner Sounds like a problem with the solenoid. I would check voltage at the valve. It could also be mechanically failed or partially plugged. Hope this helps. GFM

[@imweather]

thanks for the tip on the digital relay someone had peeled the sticker and i couldn't get it to stop being in lockout. its a pain in the arse setup if all your trying to do is bleed the air from the pump after filter service. to pushes wasnt long enuf to get all the air out

[@grayfurnaceman]

Glad you got it going. GFM

[@dave4854]

I like the cad cell testing.thanks

[@grayfurnaceman]

Welcome. GFM

[@ronsbeerreviewstools4361]

This is a very Good educational video, thanks for posting.

[@grayfurnaceman]

Welcome GFM

[@bkoz319]

thanks for the video you saved me a service call!!

[@grayfurnaceman]

Welcome GFM

[@grayfurnaceman]

Good point GFM

[@EdeniilsonRod95]

Thank you so much for this video, helped me alot. God bless you.

[@grayfurnaceman]

+Edeniilson Rodriiguez Welcome GFM

[@timothycoleman8916]

Thank you grayfurnaceman.

[@grayfurnaceman]

Welcome GFM

[@bobbyconnors1003]

Great video

[@ericfelger]

gray furnace man, I have been watching your videos for as long as you have been putting them out and never fail to learn a new trick. my question is, do you still teach, and if so where can I attend a class.

[@grayfurnaceman]

Primarily, youtube is my teaching tool. I have considered doing some classes but I have not decided yet. Thanks for the support. GFM

[@princeg6864]

Great videos.

[@HarmonicaMikesStuff]

so when I go down to check my boiler after watching your video I do what you say. I'd been using the end of a broom stick to reach the red button on the control panel to push it. I had the cover off and bumped the side of the Beckett burner and notice it lighted without me pushing the red button. I said to myself "Self check the ground" on the control panel. I notice that I could wiggle the control panel which should have been screwed down good to complete the ground. My boiler guy was here a couple weeks ago to clean it and apparently forgot to screw down the control panel screw tight. So I did and sure as shit that was the problem. After 5 days of no heat and messing with the control panel reset to light the burner when we needed hot water. The dayum thing was fixed!!! When dealing with electrical stuff always check the power and ground first. I spent around $65 on a new control box and shipping now I have and extra part that's not needed.

[@rickschiaffo618]

Thank you sir.

[@burnershack8900]

Very well made video as usual!!

[@stephencellucci]

I am having the same problem with L-7224U triple aquastat.Haven't figured it out yet.I know you have to set your low and high limits. 160 low 180 high. You might have to to turn your LL to off on a cold start boiler. I can't get voltage to the stat terminal. I might have a bad primary.IDK.They had the old style, but it was 60.00 more. If I only would have known......Steve

[@kemonbannister3405]

Love your videos, can you explain the sequence of operations?

[@grayfurnaceman]

I will put it on the list. GFM

[@markbosco6325]

Dido to Henry. Thanks for the info!!!!

[@grayfurnaceman]

+MARK BOSCO Welcome GFM

[@turnersmith3364]

This was an excellent video. I was wondering how to test flame detectors and it appears a simple multi-tester will do the job. I live in a rural area in Colorado where oil heat is not common. As such I am unable to find anyone to work on mine. Been doing most of the work ( with help of a good chimney sweep at one point) for the last fifteen years. Was able to have the bottom of the boiler relined about twelve years ago. How often should this be done?

[@williamfigenscher2082]

I have a rheem lowboy with Beckett AFG. been acting up or tripping out lol! I replaced cad cell & nozzle, cleaned & adjusted electrodes but now must hit reset-sometimes 4-5x's to start motor then fires & runs for a period of time5min, 20 min, even 40 min today but shut off just 2 degrees shy of thermostat. I've tried 2 BN white rodgers 668-401 relays but they never do "anything"? so I put the old one back on to at least get er going again? I believe the fan/line limit switch on stack is working correctly too.

[@AlaskanMainah]

Really good video Grayfurnaceman. I have the more complicated primary control with the lockout safety feature. After watching this great video, Im convinced my issue is my Beckett clean cut fuel pump. I've bled the fuel from the port. I've cleaned the filter. Still wont go. I've unscrewed the high pressure fuel line from the burner and ran it to see if fuel was going through the pump and to the burner and nothing comes out! Do you have a video on something like this? Or any tips? I'm definitely subscribing to your channel.

[@grayfurnaceman]

If the pump solenoid is getting 120 volts and there is no flow, the solenoid has failed. I would be checking at the solenoid for power. GFM

[@grayfurnaceman]

Its nice to have heat. GFM

[@namename5184]

i have allanson transformer ignition but i noticed there is no cad cel eye inside, my question is should i ne worry about it? but my boiler was working. what is the main reason/purpose/importance of cad cell eye? thanks so much

[@RelaxationMusicSleepSounds]

What to do with extra oil on the combustion chamber ?? How can I turn the heat on safely after a repair is being done?

[@skarvalics58]

hello Furnaceman, I have a R784B honey well 3 strikes your out Cad cell relay, it has the wiring for the oil delay solenoid, I really like these relays because they shut off the ignition once the flame is established which saves the ignition transformer from wearing out. I am up north in Victoria BC, I am a oil burner tech. My question is can I replace my Beckett oil delay fuel pump with a Dan Foss 3450 fuel pump that does not have a oil delay solinoid, I find a lot of the newer fuel pumps tend to leak from the shaft seal. The Dan foss pump shaft seals are bullet proof I never have problems with them. it seams like the Beckett fuel pump seals almost always leak after the warranty runs out or sometimes when they are 2 or 3 years old. I know our heating fuel is much different than 10-12 years ago. thanks for the video. Steve

[@grayfurnaceman]

I can't say I have replaced a Beckett pump with a Danfoss. It would certainly work if the mounting works. GFM

[@yfm4450]

I was wondering about the transformer always running. I had to upgrade to the newer honeywell control box and could hear the transformer stop sparking, I was wondering did the old box always keep it running?

[@grayfurnaceman]

Most ran it continuously. The newer ones can be set up to run it continuously also but there may be an issue with running the newer transformers all the time. GFM

[@meganburford7465]

Please help Any advice is appreciated! I have the second black box you showed that has the extra wiring. The light will not come on. Only time it will is for a milli second only when I flip the breaker on but it goes right back out. So it’s not getting power. I changed the breaker it does the same exact thing. Where should I start? Single mom here. Thanks I’m advance.

[@mainelyelectric]

So currently Because it is such an old Wayne burner on my Miller MOC 100 Do you think it would benefit from one of those external timed solenoid valves? Supply house has one that you add in the nozzle line with a 4 second delay $88 for burners that don’t have the control with delay contacts or a clean cut pump.

[@grayfurnaceman]

There is a benefit to a solenoid, but you will burn a lot of oil to get back the cost of the solenoid. GFM

[@bigpardner]

In addition aren't these controls also connected to and governed by the aquastat which puts the boiler temp into the equation? I guess that is connected internally, not on the outside connections.

[@JohnSmith-uy7sv]

At 2:00 that looks like my 35 year old 5 wire relay. Trying to find another one like it but all they have are 3 and 4 wire relays. I had to sand the contacts on the relays. Still works but sometimes does that fluttering with the relays and then it grabs and starts. Any ideas? Thanks

[@grayfurnaceman]

+John Smith You can make a 4 wire work by connecting the transformer and burner motor wire together. Hope this helps. GFM

[@JohnSmith-uy7sv]

+grayfurnaceman If I only knew which was which. :-) Seems like all I'm seeing are the 3 wire ones. Thanks.

[@trankt54155]

Hi, how likely is that electronic ignition control unit stop working? And how does one test to see if it is no longer working? I have a unit like that R7184P and I don't know how to test it to make sure it is still working. Thanks for your help.

[@grayfurnaceman]

Quite unlikely. Has the unit shut down on no fire? GFM

[@trankt54155]

@@grayfurnaceman I lost heat or hot water before on its own and then reset the red switch and everything worked fine but this time it did not... Is there any tutorial on testing the ignition control unit?

[@trankt54155]

@@grayfurnaceman Thanks for replying.

[@russian06374]

Mine cad cell might be bad I just want to know if the transformer has any stored voltage after you shut the breaker off and if so how to jump it out

[@GurdeepSingh-bu6ee]

Sir, Please give me a list of these compatible with each others, 1)relay box 2) spark transformer 3)cad cell 4) High temp Limit switch... My boiler is Burnham has ONE control Box with item 1 and 4, it goes bad and expansive to replace.... I know how to wire. This video explains too. Thanks from all of us for saving our hard earned money.

[@palangnar3588]

Hi, i like to know ,ask you if you know,that what temperature should i put my (hi and low), in winter time, to be best in fuel saving oil condition?I clean and service my own oil furnace.

[@davidburgos5902]

i think it's supposed to be 160 on the low limit 180 on the high limit...

[@joemeehan7369]

ahwazy if you up grade your boiler to a 3 pass boiler,with a indirect hot water heater you will save 40% of your oil bill

[@solrosenberg9552]

My brothers has a jumper connecting two of the wire hook-ups.

[@deeterfox1981]

great BUT I have a electronic switch on a weil mclain QB-180 with 6 wires and told to change to the honeywell like you showed??? which wires go where i understand all grounds get tied together but??

[@grayfurnaceman]

I have a video about the wiring of the cad cell relay that may help: kzbin.info/www/bejne/eaespaCtZdR-mZY Hope it helps. GFM

[@jpmitch100]

I'm thinking about replacing it with an R8184G which has intermittent ignition. Would that work OK?. Thanks

[@Diba2004]

I have cleaned the cad cell (after watching the videos) but the heater is still tripping off, and there is a spark sound before and after it switches off. What might be the problem???

[@minnehonk]

thanks for the repair videos, my Beckett burner will run fine for half hour or longer than shuts down and will not restart, transformer was replaced and burner serviced and cleaned last year,,, heat only thermostat installed 4 years ago, any ideas before I call a burner repair man? thanks

[@grayfurnaceman]

Sounds like an oil supply problem. Plugged filter, plugged tank, vacuum leak or plugged line. GFM

[@minnehonk]

thanks for the reply, my tenant burns kerosene, the filter at the tank is new, when bleeding the lines there is no flow problems and the fuel is clean, the furnace comes on, works great than shuts off, I am now in the process of replacing the thermostat as a starting point and checking again all connections for a tightness

[@grayfurnaceman]

If it runs for a few minutes, the burner then shuts off, you may have the high temp limit opening. Mobile home? GFM

[@1BadSavage]

my cad cell went out after my thermostat died.I changed my thermostat and the cad cell light is off but it kicks on with a green light when I turn on the heat. I haven't found any video or thing on the internet about this happening.

[@CACTUS48]

Just bought the Beckett Geni Display Tool, my hot water heater has a intermittent soft/hard lock out, next time it does it I will be able to tell what the problem is, the display tool should have lock out history....

[@profJupiter]

hello and thanks........can you recommend a 3-4ft. flexible oil line that connects to the suntec pump from the filter housing? this is to replace the copper tubing, so I can open the utica boiler swing out door without having to remove the copper oil line.

[@grayfurnaceman]

I have no source for flexible lines. We pretty much do not use them. GFM

[@centralmassanglers]

TT wires only go on that control for a warm furnace you should specify that TT is jumped out for boiler applications

[@grayfurnaceman]

I don't think it makes a lot of difference, but I would not take the paint off. GFM

[@sandman_7326]

Hello , I have an older metal HARVEY R75-58R / HONEYWELL R8184M Oil burner control ignition, A lot like the 2nd part that you showed, ( Don't see any Trip Button ) And you was saying i should be able to push the reset button many times as needed, But the thing is that i had to press the reset button a few times when it would trip after running about 10 mins and now i have a hard lockout problem like on the 3rd part Honeywell plastick newer one that you showed , Any ideal what needs to be done to get it unlocked ? Aiso it looks like it has a little red light near the reset button like the one you showed but i never see it come on .

[@grayfurnaceman]

The video at 5:35 explains the reset method. GFM

[@JasonTylerRicci]

My Riello oil furnace starts (ignition/flame), runs for 1 second, shuts down (pump but no flame) then fires up again and runs fine. Seems it takes that second attempt to run successfully. Cad cell failing?...

[@xXChaz9849Xx]

When I test my cad cell for change in resistance, it seems to be working as it should. But I still can't get my pump to even try to turn on and initiate ignition. Is there a possibility that the actual cad cell relay could be bad? How do I test it to verify?

[@grayfurnaceman]

If you have newer cad cell relay, it may be locked out. During the video it shows how to reset it. GFM

[@xXChaz9849Xx]

@@grayfurnaceman I have an old Honeywell like you show in the video. Have you ever heard of them going bad? I see a replacement is only around $75.

[@grayfurnaceman]

@@xXChaz9849Xx They do fail. GFM

[@xXChaz9849Xx]

@@grayfurnaceman I will do a continuity test at the pump/blower. I don't necessarily want have the furnace powered to check voltage...

[@CL-ty6wp]

@@xXChaz9849Xx You fix it? If the box is going, sometimes a tap or tipping it upside down gets it going. I'm not a tech or electrician but i think there is a relay? that sticks?

[@lindalewis4380]

My Rudd oil furnace will run and run and run and has gotten up to 99F in my house if I don't catch it and turn off the main switch. The thermstat has been replaced so that is not it. A friend moved some wires that were attached to the little fuse box on the opposite side of the wall where thermostat is mounted and the furnace went off. What is that little fuse box for and do you think if I just replace those wires it will turn off when it reaches temp? I have to turn it off when I leave the house in case it decides to run and run again. It worked for 6 days after he moved those wires apart, but did it again today.

[@grayfurnaceman]

Well, at least you are not cold! There are many possibilities here. Perhaps if you send me pics of the little fuse box I might be able to help. Try to get good closeups of all the wires there. Hope this helps. GFM

[@lindalewis4380]

grayfurnaceman THanks! I just saw this. I'll get a picture and send it to you. Yes, still having the problem.

[@lindalewis4380]

Linda Lewis I couldn't find your e-mail, so I uploaded two pics: www.rootsweb.ancestry.com/~lindakay/furnace/

[@stevelafever4504]

Need help. Had a flood in the basement with a new furnace, so I shut off the emergency switch to the furnace. I waited for the basement to dry for a couple days and then turned the switch back on. When I checked the furnace there was no light at all. I turned the circuit breaker off then on. My indicator light is now blinking (I assume it's in restricted mode). I tried to bleed the lines, but there's only a slow drip of oil. I held the reset button for 45 seconds. I can hear something trying to happen, but it goes back to blinking (restricted mode?). Where do I go from here?

[@grayfurnaceman]

Steve LaFever If the water was up to the level of the cad cell relay, the relay, the cad cell and probably the burner motor must be replaced. Also if the blower motor was wet, it will probably have to be replaced. Hope this helps. GFM

[@peepeenippard8127]

Hi Garyfurnaceman ..I,m just wondering how does fix the probelm of the reset button press to many times .It was press like around 6 times ?

[@grayfurnaceman]

When the problem is repaired, you will need to check to see if there is a level of oil in the combustion chamber. If you can get a stick or wire into the inspection hole to the bottom of the chamber, and do not find a level, you can fire the unit. You will need a fire extinguisher just in case. Start the burner. When it lights, shut it off. It should stay burning the oil in the chamber. Just let it burn out. Do not open the inspection door. If it starts to get out of control, use the fire extinguisher. When it burns out, you should be able to operated the appliance normally. GFM

[@RayRayNYC]

HEY FURNCEMAN!!! Great video!! So on my oil burner/boiler I have that last relay with the red button and green light that locks out if pressed more than once. What happened to me was that I let my oil run out and my burner went off. The oil man refilled the tank but didnt restart the system. (I'll deal with him later). Now it wont go on. I changed the filter, but the motor isn't running. The green light is blinking and I realize that its on lockout mode. Once I hold it for 45 seconds and it DOESNT fire back up, is the motor bad??

[@grayfurnaceman]

At this point, I would look for a reset button on the burner motor. GFM

[@RayRayNYC]

grayfurnaceman Ok when I got home last nite, I unlocked the relay by holding it for 45 seconds and it started back up. BUT it stayed on for 10 seconds and went back off. I tried to bleed it, but no oil was coming out at all. Its a fairly new oil burner/boiler. I opened up the small red oil tank where I had just replaced the filter that morning, and there was no oil inside of it. That was strange. I recently got my tank filled with 100 gallons of oil. But b4 the refill it had ran out COMPLETELY!! Is it possible that the oil lines may be clogged not allowing the new oil to flow through?? Or is it my pump? Or is it the psi (which doesn't move from 0 when the motor is restarted)?? Please help!!

[@796andy2]

ok , have zero $$ and its going down to 17 tonite ... fairly new carlin unit starts and runs good but shuts off after 30 seconds or so ... any way to jump out cad cell ? i know i know , I'll keep a close eye on it and shut off after house warms up ...

[@grayfurnaceman]

First, are you sure the flame is coming on? Is the cad cell dirty? You can jumper out the cad cell if you short the terminals for the cad cell after the burner has started. It will not work if you short it before the burner comes on. And I am sure you know, watch it closely. GFM

[@treborajr]

Have an Intertherm oil furnace that we have to keep hitting the reset button. The furnace will fire run for a few minutes and then kicks off. Any suggestions. this is in my sons mobile home and the grandkids are suffering due to the home being so cold

[@grayfurnaceman]

Check the cad cell resistance both with no light and with light. Should be below 1000 ohms with light. You could also have an oil supply problem. Clean the oil filter. Hope this helps. GFM

[@stanwilliams4091]

I need some help with my thermopride, my green light won't come on but fan kicks on, thanks!

[@grayfurnaceman]

+Stan Williams Oil or gas? Model? GFM

[@DimS_LA]

Hi , is there a way to bypass the controller.Mine broke and i m broke also.I'd like to open the burner for like 10 minutes to get hot water for bath.I was thinking maybe i can connect some cables and get the thing started manually.

[@grayfurnaceman]

None of this is recommended as there is now no safety on the burner. You can bypass the controller by by taking the incoming wires and connecting them direct to the motor and transformer. There is usually a wiring diagram on the control. Of course, the power should be off. Be very careful! GFM

[@dariogiannetti7024]

I have a cad cell that was changed now carlin control blinks amber burner comes on then off does it a few times then it will runs fine makes temperature what could the problem be??? Primary control is a 60200-02 rev b The control never locks out red

[@grayfurnaceman]

First, I would jumper the thermostat to see if the problem persists. GFM

[@MLee-yf4ho]

I have new boiler installed a few month ago- SlantFin boiler/ Beckett oil burner with the control (GeniSys Model 7505). A few weeks ago, the system was shut down with red flashing light on reset button. By pushing reset button once, it started to run again and worked since then. (I was out of town a few weeks so I'm not sure if it's been working continuously.) Last night, the same problem, I pushed reset button and restarted, however it was shut down again in the morning. It appears something keeps shutting the system down. Oil is in the tank and it's been tuned up by boiler man last time he came out to check a few weeks ago. Any idea what could be the cause of the problem? Could it be faulty control or wiring? I'd appreciate any insight you can offer.

[@grayfurnaceman]

My thoughts would be it is an oil supply problem. Be sure there is no sooting in the vent by looking in the barometric damper. It is possible that the new boiler and burner has broken loose garbage in the oil line and plugged it. It could be a control problem but eliminate supply problems first. GFM

[@Tronix102]

what would cause the reset button to pop about once a month? Other than that furnace runs just fine when it calls for heat.

[@grayfurnaceman]

+Tronix102 I would look for a dirty cad cell or possibly a blockage in the oil supply. Hope this helps. GFM

[@Tronix102]

+grayfurnaceman Thank you. My furnace guy wants to replace the burner motor for over 110 + labor. Could it be the burner motor?

[@grayfurnaceman]

+Tronix102 Is the reset on the motor popping out? If so, it is the motor. If it is the reset on cad cell relay the motor is not the problem. GFM

[@Tronix102]

+grayfurnaceman Nope the button that pops is on the Primary ignition controller, not on the motor. I did look at the cad cell, and its super clean. Thank you for all the help. I will keep an eye on it.

[@Tronix102]

+grayfurnaceman One last question, can you install any type of cad cell relay on a furnance? I have a R8184G1294 from Honeywell looking to replace it.

[@QueEnsBorn89]

I have a weil McLane boiler and a honeywell cad cell relay. the cad cell is clean and works as per my thermostat. fire comes on but the safety still kicks off. any idea what I should be looking at

[@grayfurnaceman]

You need to check the resistance of the cad cell both with a light shining on it (less than 1000 ohms) and dark (around 20,000 ohms). Hope this helps. GFM

[@tyruscobbiii3567]

hey gray furnace man when cking the transformer on the newer style do you ck it by jumping the spark like on the older ones or by a meter if so let me know. thank you. t cobb

[@grayfurnaceman]

You can certainly use a meter but I still use the screwdriver. GFM

[@tyruscobbiii3567]

thank you gfm

[@jpmitch100]

I have the older type Honeywell relay and it hums constantly. Is that normal? Best regards

[@grayfurnaceman]

If it works ok, it is ok. GFM

[@Dicofol1]

Is there any advantages in having a relay that keeps the spark on all the time (transformer always energized) when the burner is running ? Thank you

[@grayfurnaceman]

When I first started in oil, all the units were set for continuous spark. I just kept doing it. I don't know if it keeps a better flame or not. GFM

[@Dicofol1]

Thank you for your fast reply. I presume that the transformer life will be shorter if its always on. I heard that the new electronic igniter units are not as durable as the Iron Core types, maybe this is why most newer relays are of the intermittent type. Most probably the intermittent type relays will also save on the electricity consumption. Thank you for making all those videos and sharing your knowledge they are very informative, have a happy new year.

[@COPYKATTZ28]

My furnace runs for about 3 to 5 minutes then the Honey well r8184g4009 starts clicking , doesn't shut off but clicks three times real fast stops for 10 secs then clicks again. Oil boiler weil Mcclain Any ideas?

[@Lisahemphill]

My furnace just stop working last night and I have been manually lighting the pilot all day. I have bleed the pump, cleaned the filter and bleed it again. Every time it tries to light I get a lot of white smoke coming out but it doesn't start. Can you help me?

[@grayfurnaceman]

Sounds like an ignition problem to me. If you lift open the transformer you can check the spark. Check here: kzbin.info/www/bejne/bKKphYV_qb56jtk

[@Lisahemphill]

Ok if I'm not getting spark , what do I do?

[@grayfurnaceman]

Marc Waits The unit must be on while you check. Check the wiring and voltage to the transformer. If the transformer has power and no or very low spark, the transformer has failed. If its ok, you must pull the gun and check the spark gap to see if it is clear. GFM

[@geojor]

lets say I want to test if the transformer is sparking, so I open up the cad cell relay and shine a bright flashlight into the cad cell...question: will the transformer be energized for testing or is the flashlight a different light source than the flame??...would appreciate comments...

[@idaleebilka9974]

pei bossman

[@lynneleonard534]

any reason why my ignition transformer goes bad, replaced in Oct 2018 had to replace today due to weak arc?

[@grayfurnaceman]

Is the transformer electronic? GFM

[@robertbobinis3076]

What would cause no power to the 705?

[@grayfurnaceman]

The control is generally wired thru a limit and then to the service disconnect of the unit. If the fan runs, I would be looking at the limit. GFM

[@robertbobinis3076]

@@grayfurnaceman I think I saw 2 I just noticed a fuse that was burnt I replaced a 3 amp as doing so the fan came in won't shut down the switch in the stack the connection is burnt

[@luiscardenas51]

the pressures is fine. i set the the dial on the thermostat some times to 74 then i heard the click on the thermostat. the actual home temperature goes to 72 and sometimes few minutes i hear the click again on the thermostat. then later the baseboard is getting cold. then i turn up the dial... in order for the house to be in a 74 temp. i have to turn up the dial to 78. can u explain why... or ther is something wrong with the thermostat l.

[@grayfurnaceman]

+Luis Cardenas Try jumping the wires to the thermostat to see if the short cycling goes away. The house should overheat. GFM

[@luiscardenas51]

U want me to connect both wire connecting to the thermostat together. Question 1. if the house overheat and the beseboard is hot... what thats mean... 2 if the baseboard is hot and suddently stop heating what that mean... thanxs dor the help

[@grayfurnaceman]

+Luis Cardenas If the house overheats, the thermostat is the problem. If not, there is a problem in the boiler. GFM

[@rondoschiavoni8840]

CAN I USE THE WHITE PURE SILICON FOR SEALING WINDOWS WOULD IT SEAL HE BACK OF THE OIL PUMP PLATE GOOD FOR 300 DEGREES F ? OLDER WAYNE BURNER KEROSENE

[@bigpardner]

+Rondo Schiavoni  I notice at 3:37 he is saying and showing the one orange lead going to both motor and transformer. I guess therefore that as long as the motor is running the transformer is sparking the electrodes.

[@rondoschiavoni8840]

so that is like saying that the transformer doesn't shut off as soon as the flame starts and the cad cell sees it ,correct me if I'm wrong,

[@grayfurnaceman]

+Rondo Schiavone Yes. Most cad cell relays can be wired to operate the transformer only until the cad cell sees the flame or you can put the motor and transformer leads together and it runs for the entire cycle. Most are set up for continuous transformer operation. Hope this helps. GFM

[@rondoschiavoni8840]

YES IT HELPS BUT WOULD IT BE BENEFICIAL FOR THE TRANSFORMER TO LAST LONGER TO HAVE IT SHUT OFF.?

[@grayfurnaceman]

+Rondo Schiavoni I have had so few of them fail that I would not be worrying about it. GFM

[@garciafamilyfarms]

I have a Lanair mx300 that will kick on but will not fire. I've just replaced the ignition and brass washers that touch the ignition arms. Any suggestions?

[@grayfurnaceman]

Do you have oil flow? GFM

[@garciafamilyfarms]

@@grayfurnaceman yes I have oil flow to the burner. However I'm not seeing the fog like you explained in your video

[@bobbezold1160]

To take out cad cell, can I just turn service switch off and take it out

[@joelewis9433]

Bob Bezold yes

[@jaredlambert5657]

I've got one that has been stumping me. I've got an older miller furnace with a beckett burner, I plan on heating my garage with it. It will run like a top for 13-15 minutes and then trip out the primary controls red button, if you reset it the furnace will not ignite again. If I allow it to set for 1/2 hour or so it will fire up and run for 13-15 minutes again and repeat the same thing. Any ideas?

[@grayfurnaceman]

Sounds like an oil supply problem. Oil filter plugged, pump screen plugged? GFM

[@jaredlambert5657]

That would make sense, when I got the furnace the pump shaft would not spin freely, after pulling it apart and finding nothing visibly wrong I had to be careful not to over tighten the screws or it was bind again. I'll grab an oil pressure test kit from work and check it but I'd guess the pump has an issue. Thanks for the great videos.

[@grayfurnaceman]

fyi pumps are not normally especially free rotating. They are usually stiff. GFM

[@jaredlambert5657]

Got it figured out tonight, after I found the pressure bleeding back to 0 after shut down last night I checked a few things at work today and found the flare I had made was not sealing 100% and sucking air. I re did the line and now all is good in the shop. Thanks again for the great videos and advice.

[@jaredlambert5657]

Also I'm a home brewer as well and this functioning furnace will make winter brew sessions in the garage much nicer, cheers!

[@luiscardenas51]

i have a oil heater furnest. my thermostat i think dont work properly. i set to 70 degree and the house temperatures goes down to 65 and doesn't heat the house

[@grayfurnaceman]

+Luis Cardenas Dos the burner come on and stay on? GFM

[@bluelambo31]

Very helpful video thank you so much you just save me at least$300 dollars

[@grayfurnaceman]

Welcome GFM

[@williammills8953]

mine continously is flashing? any help. i changed oil filter and air filter. i had it running, then shut off, now i get nothing.

[@grayfurnaceman]

You probably got air into the line. If you have a newer Cad cell relay, they will only let you press it once. You can fool it by pressing a button underneath to give another try. I did a video on this in my oil furnace series. You can bleed it if it is one pipe at the pump. Bleed until it gets clear. Hope this helps. GFM