Recall 11V302 covers 1,522 Carrier EM-1 evaporator units in school buses for loose fuse holders and fire risk. Carrier provides the retrofit kit free.
Carrier recall 11V302 covers 1,522 school buses from model years 2006 through 2011 equipped with EM-1 evaporator units because the Delphi fuse holder can loosen, create high resistance, and arc. If arcing is severe enough, the fuse holder can melt with flame, smoke, and fire; the dealer repair will be free once available.
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What's wrong?
The Carrier EM-1 evaporator unit is part of the air conditioning equipment installed on certain 2006 through 2011 school buses. Inside that unit, a fuse sits in a Delphi Pack-Con III fuse holder within an Allied Motion motor assembly. The fuse holder is supposed to keep the fuse tight so electrical current flows through a stable connection.
On affected units, time, temperature, and vibration loosen the fuse in the holder. The loose connection raises electrical resistance, which creates heat at the contact point. It also allows arcing, which is an electrical spark across a small gap inside the connection.
There is no warning sign before failure. Treat this as an internal electrical fault in the evaporator unit, not as a condition a driver or school maintenance staff can count on spotting during normal use.
Who's affected?
| Carrier EM-1 | Air conditioner |
|---|---|
| Units affected | 1,522 |
A matching model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific vehicle.
What's the safety risk?
Sufficient arcing can melt the fuse holder and create flame, smoke, or fire around the Carrier EM-1 unit. If you see smoke or flame, park safely, shut the vehicle down, and call for service. Confirm whether the installed unit is included, then schedule the retrofit. Repair will be free at any franchised Carrier dealer once available.
What should I do?
- Check your VIN to confirm your school bus with a Carrier EM-1 evaporator unit is included in this recall.
- Contact a Carrier authorized dealer or Carrier customer service to ask whether the free retrofit kit is ready for your bus.
- Reference recall number 11V302 when you call.
- Schedule the EM-1 fuse-holder retrofit that fixes the loose fuse condition tied to arcing, smoke, and fire risk.
- Bring the owner notice if Carrier or TransArctic sent one.
What happens at the repair
At a Carrier authorized dealer, a Carrier technician installs the retrofit kit for the EM-1 evaporator unit and follows Carrier's repair instructions for the fuse holder condition. The kit and repair instructions are provided free of charge. Because the remedy status is not listed as open in the source data, treat the final dealer repair as free once available and confirm scheduling with the bus manufacturer or a Carrier authorized dealer before moving the bus for service.
Timeline
| May 27, 2011 | NHTSA published the recall |
|---|---|
| June 10, 2011 | Owner notification mailed |
Frequently asked questions
What is recall 11V302?
Recall 11V302 covers 1,522 Carrier EM-1 evaporator units installed on school buses. The fuse in the Delphi Pack-Con III fuse holder can loosen, creating high resistance and arcing. Carrier provides a retrofit kit and repair instructions free of charge.
What should I do if my Carrier EM-1 is on this recall?
Check your VIN to confirm whether the school bus is included in recall 11V302. If it is, contact a Carrier authorized dealer or the bus manufacturer to arrange the EM-1 retrofit. Reference recall number 11V302 and Carrier phone number 1-800-793-4741 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to provide the recall remedy at no cost. For recall 11V302, Carrier provides the retrofit kit and repair instructions free of charge through the school bus manufacturer or a Carrier authorized dealer.
What is the safety risk?
The safety risk is fire from the EM-1 fuse holder. If arcing is strong enough, the fuse holder can melt and be accompanied by flame, smoke, and potential fire. Until the retrofit is complete, have the bus inspected through a Carrier authorized dealer or the bus manufacturer.
What warning signs should I watch for?
Watch for smoke, flame, melted electrical material, or a burning smell near the evaporator unit. Those signs point to heat or arcing at the fuse holder. Stop using the affected unit and contact a Carrier authorized dealer or the bus manufacturer for recall 11V302 service.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/11V302000 |
|---|---|
| Carrier customer service | 1-800-793-4741 |
| NHTSA recall # | 11V302 |
| NHTSA recall # (full) | 11V302000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Owner Notification Letter (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 2, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →