@@grayfurnaceman oh im sorry man. ill check it out. I'm a maintenance guy that was thrown into things im not familiar with (50 year old electrical furnaces). so sorry will delete after i figure this out. Thank you so much for a quick response
oh! pffft! 2 weeks? it's been 2 years where's the answer? It's been in the 40s for a week & not looking like it's going to warm up til after New Years. I've managed with electric blanket & space heaters but my son is coming tomorrow. Help?
Min 2:25 -- voltmeter reads ZERO because contactor is CLOSED-circuit, right? ( but a parallel circuit is created by the voltmeter, so why doesn't it show 240 volts?)
You are correct. The parallel circuit created by the meter will read the voltage drop of the switch. The meter is very high resistance, so the voltage will be very low. GFM
Because he is probing the same leg of 120 with both probes. It wouldn't show 240v unless he probes two different legs of 120. If he probed one on that leg and the other probe to ground it would then only measure 120v. If he probed the two legs of the contactor, it would then measure 240v
@@mikie214now Thanks much. I need practice with the hands-on part of the electricals of this job (schematics are fun to follow, but that's not the same as out in the field.)
you need to recalibrate that fluke! fieldpieces dont show .2 amp disconnected! great video!! keep them coming...
Ben Staton That old boy deserves to have some inaccuracy.GFM
El jefe - enjoy watching your videos sir.
7 years later still waiting for the answer now that its hit youtube.
Have you checked the end of the video for the link?
GFM
@@grayfurnaceman oh im sorry man. ill check it out. I'm a maintenance guy that was thrown into things im not familiar with (50 year old electrical furnaces). so sorry will delete after i figure this out. Thank you so much for a quick response
@@kylejames25082 year's later and still waiting on this comment to be deleted. Lol
I'm still thinking about this lol... That circuit was still drawing 2 amps.
thanks for this...
If it shows voltage across the limit switch it means its open, when limit switch closes no voltage should show.
Correct
GFM
the element on the 160 degree oxidised terminal is pulling to many amps and is likely shorted
So does the furnace still run in that condition but not as it should?
Tanks nice explication
new to the field "student" can you show how a 4 valve manifold gauge works and its benifits. Thanks
oscar almanza Its coming.
GFM
Fusible link 🙈
Fusible link is blown
our furnace keeps blowing air intermittent heat if you give it a small tap it stops blowing and goes back to normal operation for a little while?????
Possible sticking sequencer.
GFM
Hey i can't find a link at the end of the video. What was the correct answer?
At around 3 min upper right, round dot.
GFM
@@grayfurnaceman ok i see it thanks for the help, and info.
Element or fusible link
oh! pffft! 2 weeks? it's been 2 years where's the answer? It's been in the 40s for a week & not looking like it's going to warm up til after New Years. I've managed with electric blanket & space heaters but my son is coming tomorrow. Help?
Sequencer?
Fusible link, 2 amp Is the blower
The link to the answer is at the end of the video.
GFM
Limit or broken element
can someone tell me what a code 01006202H1 means please
My furnace fan goes on but nothing blows out what's the problem?
I am assuming you mean air but no warm air. You could have a breaker tripped, burned wires, failed sequencer, or burned out element.
GFM
Min 2:25 -- voltmeter reads ZERO because contactor is CLOSED-circuit, right? ( but a parallel circuit is created by the voltmeter, so why doesn't it show 240 volts?)
You are correct. The parallel circuit created by the meter will read the voltage drop of the switch. The meter is very high resistance, so the voltage will be very low.
GFM
Because he is probing the same leg of 120 with both probes. It wouldn't show 240v unless he probes two different legs of 120. If he probed one on that leg and the other probe to ground it would then only measure 120v. If he probed the two legs of the contactor, it would then measure 240v
@@mikie214now
Thanks much. I need practice with the hands-on part of the electricals of this job (schematics are fun to follow, but that's not the same as out in the field.)
It needs a three Pole contactor
You could certainly use one but it is not necessary. You can use one 50 amp contact for 2 elements.
GFM
element
Thermal limit is open
Thermal fuse or element
You are going to have to be more specific.
GFM
@@grayfurnaceman Thermal fuse.
@@TheRetiredVet You got it.
GFM
If it was limit wouldnt all elements go down?
Jody Wilson No. Most of these units have integral limits for each element.GFM
Bad element ohm thru it with power off you will see
the heating element is shot
The link to the answer is at the end of the video.
GFM
open limit
Open limit
My fan shuts off but heater stays on .
Only shuts off when I kill breaker.
Any ideas for me please
Almost certainly a stuck sequencer.
GFM
Open limit