Help with Raypak Rp2100

[Bfofre]

First of all thanks in advance for any advice!
So.. Raypak rp2100 266k Heater calls for heat, and I hear the audible sparking, then Heater ignites without issue...
Every 30 secs thereafter I can hear it sparking again, along with "spk" on the readout.
Don't think this is normal.. Even though the heater is on and functioning!

Please advise if this is an easy fix, as this is an older heater and I don't want to spend a great deal of money fixing it..

 

[ps0303]

Unless your ignitor is in bad shape, I would suspect a bad control board is what you have. $250 - $300 for a new board.

Also, just double check your green ground wire down by the ignitor.

 

[Bfofre]

Unless your ignitor is in bad shape, I would suspect a bad control board is what you have. $250 - $300 for a new board.

Also, just double check your green ground wire down by the ignitor.

Don't see green wire at all.. Just the blue wire to the ignitor. (high tension I'm guessing)

The problem persists.. Ughhh..
I've found some boards on eBay.. But not sure the repair is worth it..

 

[ps0303]

Here is a picture of what I am trying to describe. See the green wire that is wrapped around the pilot tube? You don't have that??

 

[Bfofre]

Nope.. Just a blue wire

 

[Bfofre]

I'll go check again..