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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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Claude_B
Explorer
Explorer
Onehorse... You don't have to do buisness with an RV dealer. Check in the Yellow pages or call Dometic for the nearest Dometic service rep. My recall will be done by an independant repair center that don't sell any RV's. They sell parts and services only.
Claude
2013 Gulf Stream VISA 19ERD
VW Touareg TDI 2013
VW Passat 2012 TDI

onehorsehitcher
Explorer
Explorer
Mine is one involved in the recall. I called the number given, was told some details and instructed to call the selling dealer and get on the list. Doing that provided me with the date the "solution" will become availabe, April 17th I believe, and for me to make an appointment and take the trailer to the dealer. Because this dealer is a couple thousand miles from my present location it will cause considerable cost to do so. If I take it to another dealer I will be shuffled to the bottom of the list as they take care of their own customers. Thanks a lot Dometic.

JBarca
Nomad II
Nomad II
dcarpenter252 wrote:
Tim
Another thing, Even if the cooling unit has been replaced the kit needs to be installed.
Hope this answers A few questions.
Dennis


Dennis

First off, thank you for sharing. The pieces are now starting to fit on the disk T stat and thermal link.

The disk T stat will trip upon surface temp and is wired in the 12 VDC power line to the circuit board. When it trips it takes out the propane circuit and the 120 element.

The thermal fusible link, h'mm where have they wired this into?

If they are the automotive type, they will melt upon an overcurrent draw as they use them all over now under your hood. But are they putting it in series with the 120 V element feed or in series with the 12 VDC power feed to the circuit board? They may be using it as a fire fuse more than a overcurrent fuse which would change where you wire it into.

Another question:

You made this one statement that has me wondering.

If the cooling unit has been replaced, where there any dates given as to the age of the cooling unit? If someone has a newer cooling unit installed on an older model that is in the recall list, well the newer cooling unit seemed to be listed with the Thermal disk kit and should (I hope) have a correct wattage 120 element. However the 120 element is a separate part and may not come with the cooling unit unless someone knew to check and ordered it special.

The fusible link, we have not been able to track down yet. As we cannot find that Dometic will sell the disk T stat or the fusible link separate from an entire cooling unit.

Why would they be putting the recall kit on recalled fridges with newer upgraded cooling units? It then sort of begs the questions about all the other fridges not on the recall list....

Or are they doing a major clean sweep on serial numbers due to the recall and all get it regardless that way they have a trail that all units where corrected regardless of the cooling unit? This may be a legal thing here.

I find it sort of odd that they would not tell you to even check the ohms on the elements you where doing the recall on. Then give the owner an option to at least upgrade it and charge for it. If they did this they could weed out the population of out of spec 120 elements and really know the percentage of the problem. What better data then having the field tech's measure what is being upgraded and send it back to them.

I'm sure once you put that shield on, getting to change out the element just become more complex.:R

For the normal RV owner without precision VOM meters if they would ask the service tech to check and replace their element if it was out of spec, and buy it, Well at least the normal RV owner has a little better piece of mind they have made an attempt to have their fridge live longer.

However, doing that good deed probably opens up a major can of worms on why they are not replacing it in the first place for free.

Again, thanks for sharing.

John
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.

timsrv
Explorer
Explorer
That's good to know. Maybe I should order a few as well. Thanks. Tim

dcarpenter252
Explorer
Explorer
Tim
There was no explanation of the problem except potential fire hazard. No mention of the heating element. It was pretty much this is the kit and how to install it. We did install 1 on A unit that was in A coach. Took about 30 min.
The kits are available to anyone that has A Dometic account at no cost. You do not have to have the serial # to order them and the owner does not have to have the recall letter for you to do the work. So Monday I am going to order A dozen kits to keep on my service truck. Right now I have 5 units lined up for recall.
Another thing, Even if the cooling unit has been replaced the kit needs to be installed.
Hope this answers A few questions.
Dennis
2004 Beaver Santiam 40PDQ
2002 F150 4WD
1995 Jeep Cherokee

timsrv
Explorer
Explorer
dcarpenter252, That's good to know, thanks for sharing that with us. Finally some 1'st hand info on the recall. I'm curious if they pointed out the exact location of the failure and if it matches the pictures I posted previously. Did they mention anything about replacing elements or moving to the other pocket? If they aren't replacing elements, what's the official explanation? Any further input on this would be greatly appreciated. Thanks. Tim

dcarpenter252
Explorer
Explorer
The purpose for the shielding is to contain the fire. There are 2 thermal switches added during the recall modifications. The 1 thermal disc mounted to the boiler housing and another different melting type mounted behind the boiler housing.
I attended A Dometic class yesterday and the recall was the main thing talked about.
Dennis
2004 Beaver Santiam 40PDQ
2002 F150 4WD
1995 Jeep Cherokee

J_Walker
Explorer
Explorer
timsrv wrote:

That's what the sheet metal baffling is for. The idea is it will direct the leaking hydrogen / ammonia mixture away from the gas flame. IMO, this part of the recall was designed by their liability attorneys. Tim


Tim, Yep, and until I see it I don't have a whole lot of faith in it. It is probably better than nothing. There is just so much they can do with a flame and flammable gas leaking. For sure it will keep Dometic from being sued in case of a catastrophic fire.
Jim Walker
2014 Thor Palazzo 33.2, 6.7 Cummins, 2100 Allison
2009 Malibu

balvert
Explorer
Explorer
Looks like I better call Dometic AGAIN. Still have not received the notification and have already called them twice. That was several months ago.
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WilleyB
Explorer
Explorer
So, it seems that Dometic hasn't done much to address the propane started fire.

Hi well that's what the metal shielding modification will be for, to keep the refrigerant from the flame should a rupture occur while operating on LP
Mine is scheduled to be done on Monday and I'll take a few photos of the finished mod. Customers are not allowed in the service area because of safety and insurance laws so I won't be able to get photos during the installation
Willis
Vanguard VXL2000
2000 Ford V10 Triton, E350 Super Duty
Just for me,the Mrs and Gabby

timsrv
Explorer
Explorer
J Walker wrote:
Ok, I agree with you all. The thermal switch could actually help when operating on AC when the boiler leaks. But when operating on propane the switch would eventually cut off in the case of a leak but the fire could already have been started. So, it seems that Dometic hasn't done much to address the propane started fire.


That's what the sheet metal baffling is for. The idea is it will direct the leaking hydrogen / ammonia mixture away from the gas flame. IMO, this part of the recall was designed by their liability attorneys. Tim

J_Walker
Explorer
Explorer
Ok, I agree with you all. The thermal switch could actually help when operating on AC when the boiler leaks. But when operating on propane the switch would eventually cut off in the case of a leak but the fire could already have been started. So, it seems that Dometic hasn't done much to address the propane started fire.
Jim Walker
2014 Thor Palazzo 33.2, 6.7 Cummins, 2100 Allison
2009 Malibu

timsrv
Explorer
Explorer


This is what Willis is talking about. If coolant leaks out, and refer is still trying to operate, the boiler area can be superheated and present a hazard. The picture above is a unit that failed in this manner. When I arrived on the job site, the refer was still trying to function on AC and the discolored area you see was glowing red-hot. This is because there is no longer any coolant in the refer to dissipate heat, and since the refer can't cool, the board will continue to send power to the element. The thermal fuse will not activate in time to prevent a potential hydrogen fire, it is there to minimize the on-going over-heating hazard after such a failure. Tim

J_Walker
Explorer
Explorer
WilleyB wrote:

From previous posts on this thread, when the cooling unit fails and the coolant is lost, tremendous heat will be generated in the boiler area which "could" lead to a fire. The thermal switch would then shut down the 12 volts to the board preventing further heating. I'm guessing that's what it's all about.

Willis


The fire danger exists when running on propane which ignites the coolant if it escapes. Note that Dometic recommended that we use electric only until the recall is installed.
Jim Walker
2014 Thor Palazzo 33.2, 6.7 Cummins, 2100 Allison
2009 Malibu

WilleyB
Explorer
Explorer
I can't see how the new cut-off switch will do more that cut off during a fire.

It's just another safety feature to prevent a fire should the cooling unit fail while operating on 120VAC
From previous posts on this thread, when the cooling unit fails and the coolant is lost, tremendous heat will be generated in the boiler area which "could" lead to a fire. The thermal switch would then shut down the 12 volts to the board preventing further heating. I'm guessing that's what it's all about.

Willis
Vanguard VXL2000
2000 Ford V10 Triton, E350 Super Duty
Just for me,the Mrs and Gabby