TM-9-2540-207-14-P

HEATER, VEHICULAR COMPARTMENT, MODEL: A20

TECHNICAL MANUAL; OPERATOR, FIELD, AND SUSTAINMENT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

JULY 2007

TM-9-2540-207-14-P - Page 177 of 288

TM 9-2540-207-14&P

6-13

NOTE

:IF A C7 FAULT OCCURS DURING RUN MODE (07 OR 14), THE HEATER WILL CONTINUE TO

OPERATE AT REDUCED TEMPERATURE IF POSSIBLE, AND ALTERNATELY DISPLAY THE C7 CODE AND

THE APPROPRIATE RUN MODE (07 OR 14)

6.5.15 C8 - CONTROLLER FAULT(Design Iteration 1 & 2 Only)

CONTROLLER HAS FAILED

CHECK/POSSIBLE CAUSE

REF

.R

EPAIR

1

DEFECTIVE ELECTRONIC

PROGRAMMED CONTROLLER

BOARD

5.2.5

REPLACE ELECTRONIC PROGRAMMED

CONTROLLER

RESTART HEATER

2

CALIBRATION VALUES HAVE BEEN

CORRUPTED

CONTACT MANUFACTURER

6.5.16 C8 – CONTROLLER FAULT (Design Iteration 3 Only)

CONTROL PARAMETER SIGNALS ARE OUTSIDE NORMAL OPERATING LIMITS

CHECK/POSSIBLE CAUSE

REF

.R

EPAIR

1

DEFECTIVE VENT BOARD

REPLACE VENT BOARD

RESTART HEATER

2

DEFECTIVE POWER BOARD

REPLACE POWER BOARD

RESTART HEATER

3

DEFECTIVE LOGIC BOARD

REPLACE LOGIC BOARD

RESTART HEATER