TM-9-2350-256-10

TM-9-2350-256-10 - Page 189 of 796

HEATER OPERATION FAULTS

Warning Faults

During operation, if an abnormal condition occurs, indicator light on heater control box will begin flashing and a

code (07 or 14) will be displayed on diagnostic display. The heater will try to correct the fault. If fault cannot be

corrected, heater will continue to operate until an unsafe condition or component failure fault occurs. Then heater

will automatically shut down and a failure code will be displayed on the diagnostic display. Refer to Table 1 for

Warning Faults. Go to Personnel heater troubleshooting (WP 0089) and troubleshoot heater system.

Shutdown Faults

If, during operation, a shutdown fault occurs, the heater will immediately enter the shutdown and purge modes to

avoid operating in an unsafe condition. The diagnostic display will display the fault mode and the control box

indicator lamp will flash in cycle consisting of one flash followed by a 2-second delay. Refer to Table 2 for

Shutdown Faults. Then go to Personnel heater troubleshooting (WP 0089) and troubleshoot heater system. If any

other codes are displayed, notify maintenance.

Table 1.

Warning Faults.

Low fuel pressure

Heat limit

Ambient over temperature

Table 2.

Shutdown Faults.

Vent fan fault

Low voltage

Low burner air flow

Ignition overtime

Burner flameout

Vent air overheat

Exhaust overheat

END OF TASK

TM 9-2350-256-10

0037

0037-5