2021-2022 Highland Ridge Recreational Vehicles Propane Regulator

September 2, 2021 NHTSA CAMPAIGN NUMBER: 21V686000

Propane Regulator May Fail and Cause Fire

Increased propane pressure can enlarge the flames in gas appliances, increasing the risk of a fire.

 

NHTSA Campaign Number: 21V686

Manufacturer Highland Ridge RV

Components EQUIPMENT

Potential Number of Units Affected 1,157

 

Summary

Highland Ridge RV (Highland Ridge) is recalling certain 2021 Mesa Ridge Limited, Mesa Ridge Lite, Open Range Light, Open Range Ultra Lite, Silverstar Limited, Silverstar Lite, 2021-2022 Olympia, and Open Range recreational vehicles, equipped with Winntec model 6020 two-stage propane regulators. The regulator may fail, causing an increase in propane pressure.

 

Remedy

Dealers will replace the regulator and test the propane system for leaks, free of charge. Owner notification letters were mailed November 1, 2021. Owners may contact Highland Ridge customer service at 1-260-768-7771.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

 


Highland Ridge Open Range
Highland Ridge Open Range

 


INSPECTION OF WINNTEC MODEL #6020 LP REGULATOR

1. Only the Winntec Model #6020 – Dual Stage Double Cylinder – Automatic Changeover Regulator with Pigtails is affected. Replace the regulator and pigtails if the manufacturing date code stamped into the regulator is 18 XX, 19 XX or 20 XX. Example shown below.

REPLACING THE WINNTEC MODEL #6020 LP REGULATOR

1. Close the LP bottles and unscrew the pigtails from the LP bottles.

2. Remove the regulator from the unit.

3. Attach the new regulator to the unit.

4. Connect pigtails to LP bottles.

5. Check fittings, regulator, and connections using approved LP leak detection methods.

6. Proceed with a Drop Pressure Test:

a. Insert manometer into LP system.
b. Turn on both LP tanks.
c. Turn off both LP tanks.
d. Bleed system down to 8” water column.
e. System must hold 8” water column for a minimum of 3 minutes.

7. Ensure system operating pressure is at 11” (+-0.5) water column with 50% load and lockout pressure does not exceed 14” water column.

 


2021 MESA RIDGE LIMITED FW 14
2021 MESA RIDGE LIMITED TT 12
2021 MESA RIDGE LITE TT 26
2021-2022 OLYMPIA TT 18
2021 OPEN RANGE LIGHT FW 47
2021 OPEN RANGE LIGHT TT 88
2021-2022 OPEN RANGE TT 930
2021 OPEN RANGE ULTRA LITE 20
2021 SILVERSTAR LIMITED TT 1
2021 SILVERSTAR LITE TT 1

 


11/4/20–Grand Design RV informs THOR Ind. of three incidents involving Winntec Model 6020 regulators, where the regulators were suspected as the cause of fires. The Thor companies reviewed the issue internally and found no issues with these regulators at that time.

 

12/4/20–KZ RV informs THOR Ind. of two issues under investigation with the same suspect regulators.

 

12/22/20–Grand Design performs lab analysis on two failed regulators and finds they contain an oily substance inside. There is a belief that the oily substance is machining oil from a manufacturing process.

 

2/24/21–Grand Design informs THOR Ind. they are investigating several more fires, and will be sending regulators from those incidents for lab inspection.

 

3/16/21–Lab analysis performed on six regulators from Grand Design, including one exemplar and one from KZ RV. In the lab setting, the KZ RV regulator operated within allowable parameters, although it contained the same oily residue seen on the field samples.

 

4/19/21–THOR Ind. engages Exponent Engineering to conduct analysis of regulators to determine source of oily substance.

 

5/10/21–Safety Committee Meetings conducted at KZ RV, Keystone RV and Jayco RV, to update them on regulator investigation. All committees request further investigation of specific claims and confirmation of Exponent findings.

 

5/12/21–Exponent provides final written report/presentation on regulator analysis.

 

5/14/21–Meeting held with Grand Design, Dehco, Winnspec International, and Chen Fong to discuss regulator issue. Winnspec given until May 18, to return information regarding issues with their regulators.

 

5/19/21–Safety Committee Meetings conducted at KZ RV, Keystone RV and Jayco RV to update them on the regulator investigation.

 

5/21/21–THOR Ind. Discussed regulators issues with the Medium Heavy Duty ODI office.

 

5/24/21 & 5/25/21 – Meeting with Grand Design, Dehco, Winnspec International, and Chen Fong at Livonia, MI testing facility, to discuss regulator investigation. Chen Fong agrees the regulator is allowing higher pressure than expected with a compromised second stage seal.

 

5/27/21–Safety Committee Meetings conducted at KZ RV, Keystone RV and Jayco RV.  All safety committees decide to move forward with a recall for safety for units built with a defective Winntec Model 6020 regulator.

 

6/16/21 – Video Meeting was held with Thor Industries and NHTSA ODI and Recalls Management Divisions to update them on the progress of gathering the required populations of all regulator recalls submitted by the Thor Companies. NHTSA was informed that more confirmation testing was required to definitively establish a population.

 

7/7/21 – Exponent provided Thor Industries draft testing results of the interaction of the second stage seal with various plasticizers found in hoses used on the regulators from the last five years of manufacturing. Only one sample per year was available to test. This testing confirmed similarities in several years.

 

7/8/21 – Exponent’s draft testing results reviewed with Thor Industries companies. Due to small sample size, it was requested to see if more samples could be secured for confirmation testing.

 

7/16/21 – Thor Industries conducts meeting with Dehco, UFP and Winnspec to discuss the regulator recalls.  Winnspec agrees to provide further second stage seal discs to confirm earlier testing.

 

8/2/21 – Testing samples from Winnspec received from China at Exponent.

 

8/18/21 – Exponent provides draft testing results to Thor Industries on confirmation Samples.

 

8/20/21 – Thor Industries conducts meeting with affected companies to discuss testing results.  Companies are instructed to review the results with their Safety Committees and adjust recall populations accordingly.

 

8/26/21- Jayco/Starcraft/Highland Ridge Safety Steering Committee voted in favor of filing a safety recall.

 

9/2/21- File 573 with NHTSA and Defect Information Report with Transport Canada.

 


21E081 – Possible LP Regulator Failure – Winntec & WIC Model 6020 LP Regulators

 

21E081 – Possible LP Regulator Failure – Winntec & WIC Model 6020 LP Regulators

 


10 Affected Products

Vehicles

MAKE MODEL YEAR
HIGHLAND RIDGE MESA RIDGE 2021
HIGHLAND RIDGE MESA RIDGE LITE 2021
HIGHLAND RIDGE OLYMPIA 2021-2022
HIGHLAND RIDGE OPEN RANGE 2021-2022
HIGHLAND RIDGE OPEN RANGE LIGHT 2021
HIGHLAND RIDGE OPEN RANGE ULTRA LITE 2021
HIGHLAND RIDGE SILVERSTAR LIMITED 2021
HIGHLAND RIDGE SILVERSTAR LITE 2021

 


12 Associated Documents

Recall Quarterly Report #1, 2021-4

RCLQRT-21V686-5226.PDF 211.128KB

RCLQRT-21V686-5226

 


Remedy Instructions and TSB

RCRIT-21V686-3237.pdf 683.103KB

RCRIT-21V686-3237

 


Recall 573 Report – Amendment 2

RCLRPT-21V686-2127.PDF 215.924KB

RCLRPT-21V686-2127

 


Manufacturer Notices(to Dealers,etc)

RCMN-21V686-5355.pdf 281.714KB

RCMN-21V686-5355

 


ISSUED Owner Notification Letter(Part 577)

RCONL-21V686-0899.pdf 189.071KB

RCONL-21V686-0899

 


Remedy Instructions and TSB

RCRIT-21V686-9581.pdf 682.077KB

RCRIT-21V686-9581

 


Recall Acknowledgement

RCAK-21V686-1649.pdf 645.93KB

RCAK-21V686-1649

 


Miscellaneous Document – Model Listing

RMISC-21V686-9507.pdf 207.291KB

RMISC-21V686-9507

 


Miscellaneous Document – Chronology

RMISC-21V686-3448.pdf 235.46KB

RMISC-21V686-3448

 


Defect Notice 573 Report

RCLRPT-21V686-7705.PDF 214.146KB

RCLRPT-21V686-7705

 


Recall Quarterly Report #2, 2022-1

RCLQRT-21V686-3980.PDF 211.225KB

RCLQRT-21V686-3980

 


ISSUED Owner Notification Letter(Part 577)

RCONL-21V686-8926.pdf 186.351KB

RCONL-21V686-8926

 


Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=21V686&docType=RCL

 


 

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Last update on 2022-08-15 / Affiliate links / Images from Amazon Product Advertising API

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