MalibuDave42
Colorado
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I have been having a lot of trouble with my fridge. The pattern seems ambient temperature related. During the cool nights in the CO mountains off the grid, the unit would not run until about 10am. This past week it snowed about 10" and stayed near or below freezing for several days. It would not ignite these cold days. Now back in the warmth, I see the igniter wire is pretty crispy where it enters the ceramic piece of the igniter. Not sure the will solve the problem, but time to replace regardless.
Not sure this matters.. furnace worked fine, stove, hot water heater -- all good. End of the propane line is the fridge. There was also about 1/8" of frost below the propane level in the tank I was using at the time.
Two questions for the group:
1. Where can I find a service manual to ensure I get the right part(s) when needed?
2. Any thoughts on my sporadic fridge?
Thanks
Dave
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shastagary
minnesota
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Joined: 07/16/2007
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good diagnostic manual it covers multiple models no parts list though
Dometic's Manual Refrigeration Diagnosis
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MalibuDave42
Colorado
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Nice doc to have on hand. A few parts numbers, but none for the igniter. Thanks for passing along, though.
Dave
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Old-Biscuit
Verde Valley
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Joined: 06/20/2009
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Installation/Operation Manual
Clearances for installation/Component ID/Wiring Diagram etc
DMR702/DMC702 Manual
Parts.........
NO PARTS LIST Available
Even Dometic doesn't list any Renaissance Series Parts (DMR702/DMC702)
Renaissance Parts
Looks like a Call to Dometic is in order.....
Have Product Number and/or SKU Number available (on data sticker
As for that Spark Electrode
That wire MUST be intact
It carries the High DC Voltage that ignites the gas BUT it also is part of the flame proving circuit (milliamp signal that circuit board senses ---- no signal/DC is shutoff to gas valve)
Dometic 2932781012 (Part number for spark electrode used on NUMEROUS Dometic Fridge Models....17" Lead)
* This post was
edited 09/13/20 12:32pm by Old-Biscuit *
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
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MalibuDave42
Colorado
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I've seen that part number around the web. The part sure looks the same. But as you point out, call to Dometic to confirm would save me aggravation in the long run. Wierd business model.. keep the part list secret to reduce customer satisfaction :-)
Interesting point on the Spark Electrode. You are saying it's two-in-one sparker AND thermocouple. Correct?
Do you feel this could be related to my apparent ambient temperature issue?
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dougrainer
Carrolton, Texas
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MalibuDave42 wrote:I've seen that part number around the web. The part sure looks the same. But as you point out, call to Dometic to confirm would save me aggravation in the long run. Wierd business model.. keep the part list secret to reduce customer satisfaction :-)
Interesting point on the Spark Electrode. You are saying it's two-in-one sparker AND thermocouple. Correct?
Do you feel this could be related to my apparent ambient temperature issue?
AS long as the refer stays lit and does NOT throw a red light or error code, the Ignitor will have NOTHING to do with cooling problems. Kind of like saying, I have a slightly burnt Spark Plug wire and my Dash AC does not cool correctly. NOT related. Doug
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MalibuDave42
Colorado
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Reaching for straws... wires don't work as well when cold, so trying to connect the dots.
Thanks for the insights -- unrelated, got it. Thoughts on what it could be?
Dave
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Old-Biscuit
Verde Valley
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Joined: 06/20/2009
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You posted
"It would not ignite these cold days. Now back in the warmth, I see the igniter wire is pretty crispy where it enters the ceramic piece of the igniter."
Sure seems like electrode issue
YES electrode provides dual function
Ignition and flame proving boa Flame Rectification ( electrical process that causes a low level DC current to be conducted from the flame rod through the flame, and back to ground---circuit board senses this dc current)
Your model doesn't use a thermocouple
Maybe DOUG can post up a part number for your spark electrode
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MalibuDave42
Colorado
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Talked with Dometic this morning. They confirmed the igniter part number for the DMR702 is the same as Old-Biscuit stated: Dometic 2932781012.
The rep took the time to screen shot the exploded parts view including part numbers and emailed them to me. I am happy to share, but don't know how to post it here.
Thanks for all of the insights and help!!
Dave
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sdtravis
Encinitas
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Joined: 12/30/2020
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Dave I’m having the same ambient temperature issue with my DMR702 fridge. Curious if you solved the problem with the new electrode.
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