You had the proper 62-22868-93 ignitor? If so, must have been a bad one.
I installed a used Rheem Criterion II 75k unit in my shop. I knew it had a cracked HSI and used the info off of it to order a new one. I installed it and energized the furnace.
The HSI began glowing very brightly changing colors as it got hotter and hotter and eventually self destructed. As all of this was happening the furnace lit off and functioned normally until shop temp reached the t'stat setting at which time it shut down properly.
Any theorys as to why an HSI would get so hot?
Any and all help is appreciated.
You had the proper 62-22868-93 ignitor? If so, must have been a bad one.
wrong ignitor,fuc876 up board,possible?
Did you happen to touch the ignitor material when you were installing it?
Use the biggest hammer you like, pounding a square peg into a round hole does not equal a proper fit.
could have been a bad one, did it do the bad stuff before gv was energized?
Get the ignitor Baldie gave the part # for. Rheem uses a slower heating ignitor.
That is myth #1 in furnace repair.Originally posted by firecontrol
Did you happen to touch the ignitor material when you were installing it?
I've slathered igniters in bacon grease, and they work fine. As a matter of fact, if the furnace fires for the first time after dipping the HSI, and it's morning, i think breakfast is on.
I've never really done this, but at 1800 degrees, any oil or grease will not last long.
A myth?
I would think the oil would insulate the surface creating a hot spot.
But WTF do I know?
It is also possible that the hsi was touching the burner. I have seen that happen before. if it was touching the burner when it came on, it put extra stress on it causing it self destruct. Or it is just possible that you had a bad one.
I've seen that happen onceOriginally posted by johnnyde
It is also possible that the hsi was touching the burner.
It welded the HSI relay closed.
quote:
I installed it and energized the furnace.
The HSI began glowing very brightly changing colors as it got hotter and hotter and eventually self destructed. As all of this was happening the furnace lit off and functioned normally until shop temp reached the t'stat setting at which time it shut down properly.
So are you saying the HSI stayed energized after the furnace lit and then self destructed or did it go off after the burner lit? It should shut off almost immediately after the burners light. If it stayed on until it burned itself out even AFTER the burners were lit you have another problem.
tinmanintx,
Yes it stayed on (bright red) after the flames were established and eventually (5 - 10 seconds later)
it disintegrated.
Thanks for all the suggestions.
This kind of phoenomonon has happened before. Its quite simple really.... You had everything installed and were happy with your work and I'm sure it was a masterpiece. You were ready to crack open a king and let the t-stat call for heat while you patted yourself on the back. The furnace didn't like you and was jealous that you didn't offer it a beer as well. No need to thank me,just replace the HSI and place a COLD Bud in the blower compartment (unopened) and to the side. Then you can serve yourself one and turn the t-stat up.
If your not getting the results you desire then change. People change from either desperation or inspiration.
luskys a/c,
Your probably right,its the little details that bite you in the a$$. I'll remember the post maintenance beer sacrifice when I install the next HSI.
Thanks to all you folks.
You know this will be the third hsi. you might want to check the voltage as well as the timing sequence when it energizes. Oh, you better come back with two ignitors just in case. Good luck.
OK, now I'm real skptical.
Somebodies posting just for fun.
We've been pretty busy with weather out here in the pacific nw so I finally got back out to the shop to take some voltage measurements.
The voltage at the HSI connector is 8.65 vac.I thought it wouild be 120 vac as that is what is listed on the package the new HSI came in.
Sounds as if I might have a bad ignitor control board.
Any other thoughts?
Merry Christmas.
The Norton rep would agree with you. It's myth.Originally posted by billva
That is myth #1 in furnace repair.Originally posted by firecontrol
Did you happen to touch the ignitor material when you were installing it?
I've slathered igniters in bacon grease, and they work fine. As a matter of fact, if the furnace fires for the first time after dipping the HSI, and it's morning, i think breakfast is on.
I've never really done this, but at 1800 degrees, any oil or grease will not last long.
Somebody call myth busters.
Ok seriously-- I like the idea that it may be touching something but then again for it to stay on past the point of ignition makes me like the HSI control board contactor sticking idea!
If your not getting the results you desire then change. People change from either desperation or inspiration.