Sequencer Facts - They Aren’t All The Same

Kaleb is back with a Sequencer Facts - They Aren’t All The Same video.

Read all the tech tips, take the quizzes

[jeffb]

A well sequenced video about the sequence of sequencers!

[gotchaplumber]

Is low voltage: white & blue wires?

[gotchaplumber]

Does the top(with fan terminal) always come on first, or no?

[xx]

Why when 24 volts is applied to the coil you put both leads to each side of the coil and read voltage. Is it’s closed should it read zero as this would be the same as placing both leads side by side on the same wire that is energized.

[evaristosalazar]

A (first stage) sequencer is called a FAN sequencer and a (second stage) sequencer is called a heat sequencer

[eva_in_the_rain]

You didn't show the sequencer coming on and off. You just showed yourself testing it w/ your leads w/out the results.

[jericosha]

thanks for this, I really appreciate the careful details like this. will save me a headache in the field. Love and respect!

[southtexasprepper]

Wow, i did not know this about the sequencers, you learn something everyday.

[frankshiffer]

Quit shaking the device, it is impossible to see the device you are showing. Also, when you go to test I know what leads are, perhaps considering showing the testers readings and settings.

[Paul]

When you have a two element furnace or 'Heat Pump' (both are coils, an inductive/resistive load) if both see 220VAC at the same time the mains could see up to 14 X the running current. So the idea is to prevent both being energized at the same instant causing a possible breaker overload.
I tested my 2 Stage and both stages close at once and go open close together. I have a 200 Amp panel so no issue except a power spike I would rather avoid. The blower fan is only on a 24 Vac relay -- so I control its speed (CFM) with an external VFD device.

[bikerbobcat]

Going in to "Angry at Heat Pumps Season" this is very useful, thank you.

[NizarOkab]

Very educational video
Where should I wire my slow speed fan?

[namskramskram]

What happens if you mix two different ones? Anything bad or is the timing of the sequence just slightly off?

[smacleod]

can here the beep on the meter becasue of the music. So tha didn't tell me nothing!

[j.r.]

Cool. Like the OL on/in some compressors. Or a basic version of a sequencer

[ALLin-one]

Fantastic big thumb from all the way somalia

[HsingSun]

Thank you very much for your video. My Sequencer PN# is 14HS22 H24V 305886 (4/5 H1-15 C45-100, 1/3 H20-45 C1-30) which is very close to the one on this video.
Question 1: Where can I buy a new Sequencer? Can I replace the same one (305858) you have on this video?
Question 2: Is the Sequencer related to fan cooling system?

[philochristos]

Is there a difference between a sequencer and a time delay relay?