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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I have a Rheem 90 Classic and it seems the electronic

Customer Question

Hello, I have a Rheem 90 Classic and it seems the electronic ignitor is not lighting the furnace. The unit comes on, blowers are on and as you hear the clicking the furnace never lights. It will try a second time and again does not work. It then goes to a lockout mode with the single green LED blinking slowly for that code. NO amber LED is ever on. Thoughts?
JA: Did you check the furnace's filters?
Customer: I have not.....where would these be located?
JA: Do you plan on doing the work yourself?
Customer: Yes at this time .... unless can't figure it out
JA: Anything else we should know to help you best?
Customer: I'm not sure where the filter is located for the furnace
Submitted: 9 months ago.
Category: HVAC
Expert:  airheatman replied 9 months ago.

Do you have a meter to see if we are getting power to the igniter?And can you look to see if it is burned or broken?

Customer: replied 9 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Customer: replied 9 months ago.
I do not have a meter but it sounds like power is getting to the ignitor as you can actively hear the clicking as it is trying to light. Where is the ignitor located on the Rheem 90
Expert:  airheatman replied 9 months ago.

If you prefer phone conversation the site charges an extra fee, just accept offer.If not we can continue here.

Customer: replied 9 months ago.
Will continue here
Expert:  airheatman replied 9 months ago.

It wlll be just in front of the first burner. If you can give me full model from label inside I may have a picture

Customer: replied 9 months ago.
The model # is MHG36EA-17
Expert:  airheatman replied 9 months ago.

That appears to be ac coil.I need

complete model from inside furnace in burner compartment so I can provide guidance with this specific unit.Model will be on a label just above burners on right or left inside panel

http://i.imgur.com/U8b0GXT.jpg

Customer: replied 9 months ago.
RGRC-06EMAES
Expert:  airheatman replied 9 months ago.

Give me a second to grab a manual

Customer: replied 9 months ago.
OK thank u
Expert:  airheatman replied 9 months ago.

See link for location in front of first burner

Customer: replied 9 months ago.
Mine actually looks slightly different than the given picture.
I just tested the system again... there are some wires that go to areas just above the first and second burners and when I run the system and it tries to ignite you can see a small spark down in there.
Expert:  airheatman replied 9 months ago.

OK Rheem used the spark instead of glow bar on some of these. Do you have a volt meter so we can see if gas valve is getting 24v when it sparks?

Customer: replied 9 months ago.
Do you see the image?
Customer: replied 9 months ago.
I may have a meter...let me check
Expert:  airheatman replied 9 months ago.

That is our next step is to see if board is sending 24v to valve.If you can find meter great, if

not you can get an inexpensive one at Walmart for about 15 bucks if you would like to troubleshoot and I would be happy to guide you.

http://www.walmart.com/ip/Innova-3300-Equus-3300-Hands-free-Digital-Multimeter/14644665

Customer: replied 9 months ago.
I found my meter
Customer: replied 9 months ago.
Almost identical to the one in picture you sent
Customer: replied 9 months ago.
Are you there?
Customer: replied 9 months ago.
Hello?
Expert:  airheatman replied 9 months ago.

Yes locate the 2 wires to as valve.Put one lead on each terminal. set to volts ac and see if we get 24v when igniter sparks.

Customer: replied 9 months ago.
1) is that the setting at top of the meter image (ACV 750 or 200)?
2) In the pic I sent to you .... is this where you want to me to test ? The one on left has 2 wires going to the area above burner
Customer: replied 9 months ago.
Site A or B in included image?
Expert:  airheatman replied 9 months ago.

1. 200VAC

2. Gas valve is where we want to check for 24v when ignitor sparks

Customer: replied 9 months ago.
Ok thank you.... do i need to get near the base of these below that plastic sheath to detect the voltage?And obviously I need to go ahead and test the system and see what the voltage is as it's trying to ignite?
Customer: replied 9 months ago.
If I was getting a good enough connection...... it was reading 7-11 when ignitor trying to light
Customer: replied 9 months ago.
I did not unplug wires from that terminal
Customer: replied 9 months ago.
Customer: replied 9 months ago.
Can we proceed please??
Customer: replied 9 months ago.
Hello? It's been almost 30 mins...
Customer: replied 9 months ago.
Ok i guess I am moving on to request someone else...
Customer: replied 9 months ago.
Not responding has wasted my money and time
Expert:  BillyHvac replied 9 months ago.

hello,

my name is Billy.

Are you ready to test the terminals?

Customer: replied 9 months ago.
Close out so I can rate this and get my refund
Customer: replied 9 months ago.
I tested a hour ago and previous technician just went AWOL
Customer: replied 9 months ago.
review previous messages if those are available to you
Customer: replied 9 months ago.
on to a 3rd person? this is so inefficient