Condenser Fan Malfunction in HVAC System – 2014-2022 Braun Chief XL, Express, Express Plus, Liberty, Patriot, Signature, Super Chief, & TLC

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December 9, 2022 NHTSA CAMPAIGN NUMBER: 22V911000

Condenser Fan Malfunction in HVAC System

HVAC system failure from overheating can increase the risk of a fire.

 

NHTSA Campaign Number: 22V911

Manufacturer Braun Ambulances

Components VISIBILITY

Potential Number of Units Affected 1,321

 

Summary

Braun Ambulances (Braun) is recalling certain 2014-2022 Chief XL, Express, Express Plus, Liberty, Patriot, Signature, Super Chief, and TLC vehicles. Excessive voltage may damage the condenser fan relay, resulting in failure and overheating of the Heating, Ventilation, and Air Conditioning (HVAC) system.

 

Remedy

Dealers will replace the relay and install a diode, free of charge. Owner notification letters were mailed on December 15, 2023. Owners may contact Braun’s customer service at 1-877-344-9990. Braun’s number for this recall is 2022-02.

 

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.

 


Braun Industries has decided that a safety related defect may exist with certain 2014-2022 Chief XL, Express Plus, Liberty, Super Chief, TLC, and Signature Series ambulances.

Voltage created from a spinning condenser fan may feed DC voltage back into the system. This may damage the relay controlling the condenser fan. Relay damage such as welding the contacts open or burning of the contacts can result in operational failure of the HVAC system and potential risk of fire.

In the affected vehicles, the unenergized condenser fans can spin due to air movement as the vehicle is in motion. The fan spinning will generate voltage that feeds back into the relay causing it to overheat. This overheating can result in an inoperable condenser fan and the HVAC system will not function. Some condensers may not present an issue at initial review yet should have the relay replaced and diode added. You are receiving this notice because Braun records indicate you may have received shipments of affected units.

Braun will remedy the affected units free of charge by replacing the relay and adding a diode. Please contact your authorized Braun Dealer to arrange replacement of the affected relay and diode addition. The time required to remedy this recall is 15 minutes.

It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item of motor vehicle equipment (including a tire) covered by the notification under a sale or lease until the defect or noncompliance is remedied.
If your local Braun Dealer is unable to arrange service as described above without charge within a 60 day period upon contacting the Braun Dealer, you may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E., Washington, DC 20590 or call toll-free Auto Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153); or go to http://www.safercar.gov.

Any lessor who receives a notification of a determination of a safety-related defect or noncompliance pertaining to any leased motor vehicle shall send a copy of such notice to the lessee of a leased motor vehicle, by first-
class mail to the most recent lessee known to the lessor. Such notification shall be mailed within ten days of the lessor’s receipt of the notification from the vehicle manufacturer. This requirement applies to both initial and follow-up notifications but does not apply where the manufacturer has notified a lessor’s lessees directly.

 


Chronology :

Initial field failure report in June 2022. Reviewed failure mode and corrected issue on specific unit. 2 additional failures reported between July and August 2022.

Investigated problem further once unit back in service. Reviewed prints/designs. Found missing diode/fan spinning under certain conditions to be problematic. Reviewed potential exposure due to missing diodes and traced potential back to 2014.

Additional failures reported August – November. Moved to file recall in December 2022.

 


72 Affected Products

Vehicles

MAKE MODEL YEAR
BRAUN AMBULANCES CHIEF XL 2014-2022
BRAUN AMBULANCES EXPRESS 2014-2022
BRAUN AMBULANCES EXPRESS PLUS 2014-2022
BRAUN AMBULANCES LIBERTY 2014-2022
BRAUN AMBULANCES PATRIOT 2014-2022
BRAUN AMBULANCES SIGNATURE SERIES 2014-2022
BRAUN AMBULANCES SUPER CHIEF 2014-2022
BRAUN AMBULANCES TLC 2014-2022

 


10 Associated Documents

Defect Notice 573 Report

RCLRPT-22V911-1013.PDF 219.632KB

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Recall Acknowledgement

RCAK-22V911-5462.pdf 647.329KB

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Manufacturer Notices(to Dealers,etc)

RCMN-22V911-7023.pdf 277.756KB

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Manufacturer Notices(to Dealers,etc)

RCMN-22V911-4719.pdf 281.547KB

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Owner Notification Letter(Part 577)

RCONL-22V911-1246.pdf 279.602KB

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Recall Quarterly Report #1, 2022-4

RCLQRT-22V911-6579.PDF 211.136KB

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Recall 573 Report – March 29, 2023

RCLRPT-22V911-4341.PDF 219.736KB

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Miscellaneous Document

RMISC-22V911-3771.pdf 69.877KB

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Recall Quarterly Report #2, 2023-1

RCLQRT-22V911-5304.PDF 211.309KB

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Recall Quarterly Report #3, 2023-2

RCLQRT-22V911-5445.PDF 211.309KB

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Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=22V911&docType=RCL

 


 

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