TM-9-2540-207-14&P Sustainment Manual for A20 Heater for M113 2540-01-396-2826 Download
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TM 9-2540-207-14&P 6-34 6.5.43 F6 - INLET OVERHEAT (All Design Iterations) A WARNING FAULT CODE WILL FLASH WHEN AMBIENT TEMPERATURE EXCEEDS 104°F (40°C) AND THE HEATER WILL OPERATE ONLY ON LOW HEAT MODE.IF THE AMBIENT TEMPERATURE EXCEEDS A SAFE OPERATING TEMPERATURE OF 115°F (46°C) THEN THE HEATER WILL DISPLAY THIS FAULT AND SHUTDOWN. CHECK/POSSIBLE CAUSE REF. REPAIR 1 IS HEATER PRODUCING HEAT AND OPERATING FAULT CODE FLASHING? NONE. THIS IS NORMAL OPERATION. HEATER HAS SWITCHED TO LOW MODE TO ALLOW AMBIENT TEMPERATURE TO DROP BELOW 104°F (40°C). OPERATE HEATER IN LOW MODE 2 CHECK TO ENSURE THAT HEATER DUCTING IS PROPERLY INSTALLED VEHICLE TM 2.2 2.3 2.7 INSTALL DUCTING CORRECTLY TO HEATER. ENSURE VENTILATION AIR BLOWS AWAY FROM HEATER TO ENSURE PROPER AIR MIXING. 3 IS HEATER IN PURGE MODE AND ERROR CODE DISPLAYED? 3.5 NONE. AMBIENT TEMPERATURE IS ABOVE 131°F (55°C) AND HAS TURNED ITSELF OFF. PURGE HEATER AT LEAST 3 TIMES. RESTART HEATER WHEN INSIDE VEHICLE AMBIENT TEMPERATURE HAS COOLED DOWN. 4 REVERSE AIR FLOW CONDITIONS VEHICLE TM 2.2 2.3 2.7 INSTALL DUCTING CORRECTLY. RESTART HEATER