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Dometic Refer Recall - Possible Fire Hazard -Update 2/13/07

MELM
Explorer
Explorer
Click here to go directly to Updates.
Update Number 1 Nov 23, 2006
Update Number 2 Dec 5, 2006
Update Number 3 Jan 10, 2007
Update Number 4 Jan 19, 2007 - Recall Instructions - click here: Dometic Recall You need your model and serial numbers.
Update Number 5 Feb 13, 2007 - Added links to new info on the NHTSA website including the info/form for claiming reimbursement for a failure. These are at the end of the post below where all the updates are posted.

Also, edited the below Recall to include the change made prior to the Dec 5 update showing the proposed remedy.

Below is information from the NHTSA website on a recall of certain Dometic refrigerators. This recall is in its very early stages, and there is no resolution in place as of Nov 1, 2006.

From the NHTSA website:

Dometic Recall NHTSA Campaign ID 06E076000

Make / Models : Model/Build Years:
DOMETIC / NDR1062 9999
DOMETIC / RM2652 9999
DOMETIC / RM2662 9999
DOMETIC / RM2663 9999
DOMETIC / RM2852 9999
DOMETIC / RM2862 9999
DOMETIC / RM3662 9999
DOMETIC / RM3663 9999
DOMETIC / RM3862 9999
DOMETIC / RM3863 9999

Manufacturer : DOMETIC CORPORATION

NHTSA CAMPAIGN ID Number : 06E076000 Mfg's Report Date : AUG 28, 2006

Component: EQUIPMENT: RECREATIONAL VEHICLE

Potential Number Of Units Affected : 926877

Summary:
CERTAIN DOMETIC TWO-DOOR REFRIGERATORS MANUFACTURED BETWEEN APRIL 1997 AND MAY 2003: SERIAL NOS.
713XXXXX THROUGH 752XXXXX;
801XXXXX THROUGH 852XXXXX;
901XXXXX THROUGH 952XXXXX;
001XXXXX THROUGH 052XXXXX;
101XXXXX THROUGH 152XXXXX;
201XXXXX THROUGH 252XXXXX;
301XXXXX THROUGH 319XXXXX,
INSTALLED IN CERTAIN RECREATIONAL VEHICLES AS ORIGINAL EQUIPMENT AND SOLD AS AFTERMARKET EQUIPMENT. A FATIGUE CRACK MAY DEVELOP IN THE BOILER TUBE WHICH MAY RELEASE A SUFFICIENT AMOUNT OF PRESSURIZED COOLANT SOLUTION INTO AN AREA WHERE AN IGNITION SOURCE (GAS FLAME) IS PRESENT.

Consequence:
THE RELEASE OF COOLANT UNDER CERTAIN CONDITIONS COULD IGNITE AND RESULT IN A FIRE.

Remedy:
THE VEHICLE MANUFACTURERS WILL NOTIFY OWNERS OF RECREATIONAL VEHICLES THAT HAD THE REFRIGERATORS INSTALLED AS ORIGINAL EQUIPMENT AND DOMETIC WILL NOTIFY OWNERS OF THE AFTERMARKET REFRIGERATORS. DOMETIC WILL INSTALL A SECONDARY BURNER HOUSING FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN BETWEEN APRIL AND JUNE 2007. OWNERS MAY CONTACT DOMETIC AT 888-446-5157.

Notes:
CUSTOMERS MAY CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY: 1-800-424-9153); OR GO TO HTTP://WWW.SAFERCAR.GOV.

The following is extracted from the notice provided by Dometic to the NHTSA dated 8/26/06:

The potential defect is associated with cooling unit at the back of the refrigeration cabinet.

A fractional percentage of the potentially affected refrigerators have experienced a fatigue crack that may develop in the boiler tube in the area of the weld between the boiler tube and the heater pocket. A fatigue crack may release a sufficient amount of pressurized coolant solution into an area where an ignition source (gas flame) is present. Dometic's investigation has shown that a simulated release of cooling solution (refrigerant) in the area of the boiler, under certain conditions, could be ignited by the presence of an open flame. A boiler fatigue crack with the loss of cooling solution without ignition would result in a non-operational refrigerator that is not a safety issue. Under certain conditions, the released coolant could ignite and result in a fire. In order to have a fire, at a minimum, all of the following conditions must exist:

    1. The refrigerator must be on and normally operating and gas burner must be lit;
    2. 'There must be an oversized heating element in the refrigerator;
    3. The boiler tube must develop a throughway fatigue crack of a
    specific size;
    4. There must be a release of the cooling solution at a rate which will
    allow the accumulation of the cooling solution at a concentration within its range of flammability; and
    5. There must be ignition source (gas flame) present.

If any of these conditions are not present, a release of the cooling solution will not result in a fire.

In April of 1997 Dometic modified the design of the affected refrigerators by increasing the wattage of the heating element from 325 watts to 354 watts. All production of the affected units from April 1997 through May of 2003 utilized the 354 watt heating element. In May of 2003, in order to improve the operating life of the refrigerators, Dometic returned to the use of the 325 watt heating element which it continues to use today. It is now believed that the use of the higher wattage heater contributed to abnormal fatigue in the boiler tube.

The products in question are all refrigerators used in the original manufacture of recreation vehicles or as replacement equipment for recreation vehicles. The total population of refrigerators potentially containing the defect is 926,877. Dometic estimates a potential maximum incident rate of 0.01% related to boiler fatigue cracks that leak and may result in a fire. There have been no incidents of injury or death related to the affected population of Dometic refrigerators.

Dometic became aware of the occurrence of fires which may have involved their products and retained an independent engineering testing laboratory to fully evaluate and investigate any potential defect in their refrigerators which might result in a fire. A number of returned units were analyzed and microscopic fatigue cracks which could release coolant into the area of the burner were identified in the boiler tube metal in the area of the weld between the heater pocket and boiler tube. Tests simulating the cracks were conducted the week of August 18, 2006 and confirmed a possible cause of fire in the refrigerators under certain conditions. These test results prompted the preparation of this notice.

Dometic continues to gather information on the potential defect and will forward additional relevant information as it becomes available.

Dometic has not yet identified a proposed remedy for the potential defect. Dometic will continue a testing program designed to identify and evaluate possible remedies. This evaluation will take place both in the United States and in Sweden. Once a remedy has been identified, Dometic will initiate or participate in a remedy campaign initiated by the original equipment manufacturers and aftermarket suppliers who have purchased, sold, and distributed these products. A list of original equipment manufacturers and aftermarket suppliers to whom Dometic has sold the potentially defective refrigerators is being prepared and will be provided to the NHTSA upon its
completion.

The following is extracted from the NHTSA response on 9/18/06:

Please provide the following additional information and be reminded of the following requirements:
    Dometic must provide an estimated dealer notification date as well as an owner notification date including the day, month, and year. You are required to submit a draft owner notification letter to this office no less than five days prior to mailing it to the customers. Also, copies of all notices, bulletins, dealer notifications, and other communications that relate to this recall, including a copy of the final owner notification letter and any subsequent owner follow-up notification letter(s), are required to be submitted to this office no later than 5 days after they are originally sent (if they are sent to more than one manufacturer, distributor, dealer, or purchaser/owner).

    Dometic must file a sample of the envelope which you intend to use to mail the recall notice to owners. The words "SAFETY", "RECALL", "NOTICE" in any order must be printed on the envelope in larger font than the customers name and address.
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arizonakid
Explorer
Explorer
Thank you JBarca.

xiaoneitie
Explorer
Explorer
For those that aren't sure where the serial number is on their double door Dometic, the tag is located on the upper side of the lower food compartment. The model, serial number and product number will be listed on this tag.

JBarca
Nomad II
Nomad II
Here are the pics



2005 Ford F350 Super Duty, 4x4; 6.8L V10 with 4.10 RA, 21,000 GCWR, 11,000 GVWR, upgraded 2 1/2" Towbeast Receiver. Hitched with a 1,700# Reese HP WD, HP Dual Cam to a 2004 Sunline Solaris T310R travel trailer.

arizonakid
Explorer
Explorer
The Dometic refer in my 2001 Sierra which I just bought has hadly been used at all in the past 10 years, never had the recall done... works fine on gas andelectric but I decided to replace the 120V element and have the recall work done...

Replaced the element today with a new one, here are photos of the old and new element. They have done some redesign work as timsrv mentioned earlier....

edit: WTF can't use HTML to post photos? OK copy and paste time...


http://lakeboon.com/trailer-2001-sierra/refrigerator-elements-1.JPG


http://lakeboon.com/trailer-2001-sierra/refrigerator-elements-2.JPG




The old one measured 38.4 ohms, the new one 41.0 ohms... still too low with the 120 VAC here so I will install a light dimmer to lower the voltage (and wattage).

arizonakid
Explorer
Explorer
Some have wondered why Dometic didn't install the lower wattage element as part of the recall. They should have, based on their comments as the reason for the original failures:

"In April of 1997 Dometic modified the design of the affected refrigerators by increasing the wattage of the heating element from 325 watts to 354 watts. All production of the affected units from April 1997 through May of 2003 utilized the 354 watt heating element. In May of 2003, in order to improve the operating life of the refrigerators, Dometic returned to the use of the 325 watt heating element which it continues to use today. It is now believed that the use of the higher wattage heater contributed to abnormal fatigue in the boiler tube."

But it would have done no good. I think it was timsrv who wondered why a slight (within tolerance) heat difference should crack the boiler weld. He was correct, and Dometic was wrong, as shown by the the second recall which added units from June 2003 to September 2006 (all of which presumably had a newer 325 watt element).

Poor construction of all of the elements whether 354 watts or the later 325 watts (perhaps too hot a lower tip, hot spots, etc) may have contributed to the problem, but it appears that (as others have mentioned) the real cause of failure was metallurgical (wrong metals, weld, heat treatment...).

Perhaps Dometic figured it out. Anyone know how the 2007 - to - present units are holding up?

arizonakid
Explorer
Explorer
ak63 wrote:
WORD OF CAUTION ABOUT THE PREVIOUSLY POSTED TRANSFORMER MODIFICATION

I would not recommend that as a solution, since you are connecting 120V to a low voltage secondary. The insulation on the wiring on the transformer secondary side (6.3v-CT-6.3v) may not be sufficient for 120V. This could create an electrical hazard with all the associated risks: fire, electrocution etc.


My apologies if this has been commented on -- but I don't believe you are correct...
with the xfmr connected in bucking mode you are now dropping 113 volts across the heating element, and only the 6.3 volts across the transformer secondary. Should be no insulation problem.

Feel free to correct me if I am wrong.

timsrv
Explorer
Explorer
Yes, the recall was extended after I made that comment. Here's the thread that discusses the extended recall http://www.rv.net/forums/index.cfm/fuseaction/thread/tid/21386693.cfm

arizonakid
Explorer
Explorer
69800 wrote:
Oh one more thing. What makes anyone think Dometic is going to buy me a new trailer if it burns.......


A good lawyer may think so....

arizonakid
Explorer
Explorer
timsrv wrote:
All this aside, the recall ended early in 2003, so it seems just a little odd you would have a recalled refer in a 2005 trailer. What are your model and serial numbers? Tim


OK here's the answer, the recall was extended to 2006.....

arizonakid
Explorer
Explorer
smkettner wrote:
Model number RM2652
Serial number 521 05122

From recall website:

When I put in 52105122 for S/N it says not affected.
When I put in just 05122 then it says needs repair.

Question... What is the correct input length for the S/N?
There does not seem to be an error check just yes or no.

My trailer was built about 10/2005.

Am I safe or need repair?


That was on page 69, the response was that his refer is not affected -- I have not read to the end of this thread so perhaps the response (based on earlier info?) has been corrected, but it is affected.

Here are the affected models and SNs
http://rvcountryllc.com/dometicrecall.aspx

Here is the dometic site to check
http://67.238.126.140/recall.php

Tom

arizonakid
Explorer
Explorer
ausdoug wrote:
Willis, for all of us wanting to see the mod, thanks for posting. Your pictures will help us ensure our dealer does it the same way.


Not if you use photobucket, they disappear after a while....

Is there any way to attach a photo to your post on rv.net?\

arizonakid
Explorer
Explorer
"...a fatigue crack that may develop in the boiler tube in the area of the weld between the boiler tube and the heater pocket. ..."

Were is that? Can anyone post or link a picture of this area... and whether sealing the area with JB Weld might avoid the issue on the small percent of refers affected?

Chris_Bryant
Explorer
Explorer
The recall is simply safety related. If it is out of warranty, repair or replacement is on your dime.
-- Chris Bryant

scottiebe
Explorer
Explorer
ok so we just had our new to us 5er out last weekend and fridge never got cold. pulled access panel off and there is a greenish/yellowish residue all over the lower back of fridge! my model is a match for this recal, origianl owner gave me all paper work and i have just started going thre it all and have found the recall notice. i would assume it has not been done, but i do not know that for a fact. can someone give me some suggestions. camper is parked on a permanent lot i can pull fridge and bring it somewhere if you all thinnk i can get fixed due to recall! please advise.
thanks, scott