An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

Home : Articles
Have a Soldier/Warfighter who takes pride and ownership of their assigned equipment? Then nominate them for PS Magazine's "I Own This" recognition program. Click HERE to learn more.

PS Magazine poster image
Click on image above to view and
download 
this and other posters
Articles
NEWS | Dec. 12, 2019

A20 Personnel Heater: Start-up Procedure Done Right

Crewmen,

Your combat vehicle’s A20 personnel heater, NSN 2540-01-396-2826, will keep you warm when the temps drop. But neglect the proper start-up procedures and your heater will give you the big chill!
        
Sometimes operators hold the RUN-OFF-START switch on START too long. After 10 seconds in the START position, the heater automatically goes into a 4-minute purge mode. The heater’s fuel supply cuts off and all remaining fuel inside the heater burns off.
        
Because the heater won’t start, most operators assume it’s defective and turn it in for repair. But the heater’s not the problem! It’s the improper start-up procedure that causes all the trouble.
        
To start the A20 heater correctly, hold the RUN-OFF-START switch on START for four (4) seconds, then flip it to RUN.  The heater will go through a quick self-diagnosis and then should start.
        
If the heater still won’t start, check out the troubleshooting procedures in TM 9-2540-207-14&P (Jan 07).
        
And if your vehicle is an M1A2 SEP or M2/M3 Bradley, refer to your TMs for vehicle-unique starting instructions.
 
Want to get better search results faster? 
Click the link below to access our "how to" guide
.
After entering a keyword, you must hit or click the Search bar/box below for the function to work.
Simply hitting Return won't yield results.
LOGSA Links/URLs
Note about links to archive articles

If you come across a link to a pre-2014 PS Magazine issue or article that uses LOGSA in the web address (URL), use this link instead:
 
For issues/articles from 2014 and after, click on the Archive/Index tab in the top menu of this website.

BE ADVISED: With the migration to Army365, emails in older articles may still reflect an @mail.mil address. To update, change the domain to @army.mil