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Campaign 18V747 Posted October 22, 2018 86 units

2012-2015 E-One Cyclone/Typhoon Recall 18V747: HVAC Relay

RN
Reviewed by the RecallNotify editorial team
Published May 25, 2026

Recall 18V747 covers 86 2012-2015 E-One Cyclone Iii, Cyclone Ii, and Typhoon emergency vehicles with melting HVAC relays. Dealer repair is free.

E-One is recalling 86 2012-2015 Cyclone Iii, Cyclone Ii, and Typhoon emergency vehicles because high current load in the HVAC system can melt a relay. A melting relay increases the risk of a fire, and E-One dealers will complete the recall repair free of charge.

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What's wrong?

The HVAC electrical relay on 2012-2015 E-One Cyclone Iii, Cyclone Ii, and Typhoon emergency vehicles works like a heavy-duty switch. When the heating, ventilation, and air conditioning system needs power, the relay opens and closes the circuit so current reaches the HVAC components without routing that load through smaller controls. The relay has to match the current the circuit is designed to carry.

On affected vehicles, the relay in that HVAC circuit is undersized for the load. E-One found abnormally high current at the relay that supplies certain HVAC components. Under that load, the relay can overheat and melt instead of carrying power cleanly through the circuit. The replacement relay assembly is designed to carry the proper current for the fused circuit.

Owners or service crews can find cracking during a visual inspection. Treat visible cracks around the relay assembly as the warning sign that the part needs dealer attention.

Who's affected?

Spans 3 E-One fire apparatus models across 4 model years, all tied to the electrical system.

2012 E-One Cyclone Iii electrical system
2013 E-One Cyclone Iii electrical system
2014 E-One Cyclone Iii electrical system
2015 E-One Cyclone Iii electrical system
2014 E-One Cyclone Ii electrical system
Units affected86
Field incidentsNHTSA has logged 1 field incident to date.

A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.

What's the safety risk?

A melting relay increases the risk of a fire. Cracks visible during inspection are the warning sign to take seriously. If cracks are found, schedule service soon and avoid unnecessary operation until a dealer reviews it. Repair is free at any franchised E-One dealer.

What should I do?

  1. Check your VIN to confirm your 2012-2015 E-One Cyclone Iii, Cyclone Ii, or Typhoon emergency vehicle is included in this recall.
  2. Contact a franchised E-One dealer to schedule the free relay assembly installation that fixes the HVAC relay that can melt.
  3. Bring the recall notice if E-One mailed one. If not, reference recall number 18V747 when you call.
  4. Avoid unnecessary HVAC use until the relay assembly repair is complete.
  5. Call E-One customer service at 1-352-861-3612 with questions about scheduling or dealer handling.

What happens at the repair

At the dealer, an E-One technician installs a new relay assembly in the HVAC system. The recall repair is free, and parts and labor are covered. The relay replacement addresses the high current HVAC load that caused one relay to melt on affected emergency vehicles. E-One has a general reimbursement plan on file for this campaign. If you already paid for a related relay or HVAC repair before the recall work was performed, contact E-One customer service and ask how to submit documentation under that plan.

ReimbursementReimbursement available

Timeline

October 22, 2018 NHTSA published the recall
November 15, 2018 Dealer notification began
November 15, 2018 Interim owner notification (was planned for this date)
December 15, 2018 Dealer notification ended
January 10, 2019 Owner notification mailed

Frequently asked questions

What is recall 18V747?

Recall 18V747 covers 86 2012-2015 E-One Cyclone Iii, Cyclone Ii, and Typhoon emergency vehicles with an HVAC relay that can melt under high current load. A melting relay can increase the risk of a fire. E-One dealers will install a new relay assembly for free.

What should I do if my 2012-2015 E-One Cyclone Iii, Cyclone Ii, or Typhoon is on this recall?

Check your VIN to confirm your specific emergency vehicle is included in recall 18V747. If it is, contact a franchised E-One dealer to schedule installation of the new HVAC relay assembly. Reference recall number 18V747 when you call. The repair is free.

Is the recall repair free?

Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and E-One will install the new relay assembly free of charge at a franchised E-One dealer. Parts and labor are covered for vehicles included in recall 18V747.

What is the safety risk?

The safety risk is fire from a melting HVAC relay. E-One reported that high current load in the HVAC system can melt one relay, which can increase the risk of a fire. The repair replaces the relay assembly for free.

More information

NHTSA campaign pagenhtsa.gov/vehicle-recalls/18V747000
E-One customer service1-352-861-3612
NHTSA recall #18V747
NHTSA recall # (full)18V747000

Source documents

This article is generated from NHTSA's primary recall filings and reviewed against the source on May 25, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →