# Service bulletin HTB2018\-01.18

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10131381
- Published by NHTSA: 2018\-04\-02
- Manufacturer's number: HTB2018\-01.18
- Manufacturer's date: 2018\-02\-08
- NHTSA component: EQUIPMENT:APPLIANCE:AIR CONDITIONER

## NHTSA's summary

Due to an error in the Cooltech AC system Data Panel condenser fan controller firmware regarding freon sensor fault points, there is a possibility that below freezing temperatures could cause false AC system fault warning messages. Recommending vehicles fitted with Data Panel fan controllers built prior to 01/15/2018 and having firmware revision 010E or earlier, update Data Panel controller firmware revision to Rev F \(015\). There is no safety concern related to this bulletin, Ac system will continue normal operation if fault is displayed. All Models fitted with Data Panel CoolTech AC system condenser fan controller.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10131381-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10131381-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Equipment and accessories, Heating and air conditioning

## Vehicles listed

- 2014 HORTON AMBULANCE 403
- 2013 to 2017 HORTON AMBULANCE 453
- 2013 to 2017 HORTON AMBULANCE 457
- 2013 to 2016 HORTON AMBULANCE 503
- 2013 to 2016 HORTON AMBULANCE 553
- 2013 to 2017 HORTON AMBULANCE 603
- 2013 to 2017 HORTON AMBULANCE 623
- 2017 HORTON AMBULANCE CCO
- 2013 to 2016 HORTON AMBULANCE CHANGE OVER

JSON: [/v1/bulletins/10131381](/v1/bulletins/10131381)

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