Help with replacement of Fenwel Ignition control in Laars LD

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Here. I hope that i am not stepping on any "instructional" toes, but as they say, a picture, err scanned document, is worth a thousand words.

Sometimes it is easier to see it than try to explain it. Hope that this is your unit. Could not find a straight LD. This is from an Lite 2 LD.




Not sure if this will be available to view. It appears that Photobucket has now turned into a pay service.

Here is a link to the PDF: https://www.jandy.com/~/media/zodiac/global/downloads/h/h0275300.pdf


Does TFP have a line on an image host that can accommodate the "advice givers" here???
 
wpartelo said:
I have an older Laars Lite LD heater. After troubleshooting heater, I determined the ignition control was faulty. I ordered up a new module and found out that the replacement module requires wiring modification for my heater. It is made for the digital control panel and mine is the analog one. The part number is R0317500. The biggest difference I see is that on the old unit, the IGN and FS are separate outputs. On the new model, there is one terminal labeled IGN/FS. I found a wiring diagram for the new panel and wired it up accordingly. I have the IGN/FS going to the flame sensor and I have Red from the transformer and IGN/120 going to the Ignitor. With this setup, the ignitor does not get hot. I should be getting 120vAC between the transformer red and the IGN/120 but I get 0vAC. Can someone help me figure out what is going wrong? Testing all the other safety switches, it seems good. I get 24vAC at all of them. I am running out of ideas.

thanks
Bill
Click to expand...

did you ever get it? What was the problem? I'm stuck on the same situation for 3 days now. Tech support is clueless.
 
wpartelo said:
I have an older Laars Lite LD heater. After troubleshooting heater, I determined the ignition control was faulty. I ordered up a new module and found out that the replacement module requires wiring modification for my heater. It is made for the digital control panel and mine is the analog one. The part number is R0317500. The biggest difference I see is that on the old unit, the IGN and FS are separate outputs. On the new model, there is one terminal labeled IGN/FS. I found a wiring diagram for the new panel and wired it up accordingly. I have the IGN/FS going to the flame sensor and I have Red from the transformer and IGN/120 going to the Ignitor. With this setup, the ignitor does not get hot. I should be getting 120vAC between the transformer red and the IGN/120 but I get 0vAC. Can someone help me figure out what is going wrong? Testing all the other safety switches, it seems good. I get 24vAC at all of them. I am running out of ideas.

thanks
Bill
Click to expand...

did you ever get it? What was the problem? I'm stuck on the same situation for 3 days now. Tech support is clueless.
 
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