TM 9-2540-207-14&P
3.6
HEATER DATA CODES MODE
To force the Heater to Data Codes Mode, hold the Control Box Switch in the 'Start" position for one (1) second, then let
switch return to "Off" position. The Heater will then cycle through the Data Codes.
Note: p p -
If the Diagnostic Display appears blank and the Heater is operating, the Diagnostic
Display circuit has failed. Ref 5.5.2
D1
Operation Hours
D2
Number of Starts
D3
Version Level
Table 3-4. Data Codes
D1 - OPERATION HOURS
Display code D1 will be followed successively by a pair of two digit numbers (4 numbers in total) indicating the
total number of hours that the Heater has operated. For example D1 followed by 12 followed by 34 means - the
Heater has operated 1,234 hours.
D2 - NUMBER OF STARTS
Display code D2 will be followed successively by a pair of two digit numbers (4 numbers in total) indicating the
total number of starts that the Heater has experienced. For example D2 followed by 22 followed by 17 means -
the Heater has been started 2,217 times.
D3 - VERSION LEVEL
Display code D3 will be followed by one two digit number, that is the version number of the Heater Software. For
example D3 followed by 02 means -the Heater Software is production version 2.
One minute after switching the Heater off, the diagnostic system will display hours, starts and version level of the Heater.
See Data Codes Mode Example, Table 3-5, which illustrates the display code sequence for the examples presented
above (D1, D2 and D3). The shaded segments in Table 3-5 represent the time when the display is blank for one (1)
second. The 'real world' numeric values associated with the respective Data Codes in the display will likely vary from
those shown in the Example below.
D
1
1
2
3
4
D
2
2
2
1
7
D
3
0
2
Table 3-5. Data Codes Mode Example
3-4
