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 6-31 6.5.38 F3 - HEAT LIMIT (Design Iteration 3 Only) VENT AIR OUTLET TEMPERATURE HAS EXCEEDED THE TARGET TEMPERATURE AND HEAT OUTPUT WILL BE REDUCED. CHECK/POSSIBLE CAUSE REF. REPAIR 1 CHECK THAT ALL DAMPERS IN VEHICLE ARE OPEN OPEN ALL DAMPERS FULLY SWITCH HEATER TO LOW MODE 2 CHECK FOR OBSTRUCTIONS IN FRONT OF HEATER VENTILATION OUTLET REMOVE OBSTRUCTIONS SWITCH HEATER TO LOW MODE 3 CHECK ALL DUCTING CONNECTIONS VEHICLE TM 2.2 2.3 2.7 INSTALL DUCTING CORRECTLY SWITCH HEATER TO LOW MODE NOTE:THIS IS A WARNING ONLY, IT PRECEDES A F4 FAULT. 6.5.39 F4 - VENT AIR OVERHEAT (Design Iteration 1 & 2 Only) THE VENT AIR OUTLET TEMPERATURE HAS EXCEEDED A SAFE OPERATING TEMPERATURE OF 345°F (174°C) CHECK/POSSIBLE CAUSE REF. REPAIR 1 CHECK TO SEE IF FAULT OCCURS AT START UP IF FAULT OCCURS AT START UP GO TO STEP 7 2 CHECK THAT ALL DAMPERS IN VEHICLE ARE OPEN OPEN ALL DAMPERS FULLY SWITCH HEATER TO LOW MODE 3 CHECK FOR OBSTRUCTIONS IN FRONT OF HEATER VENTILATION OUTLET REMOVE OBSTRUCTIONS SWITCH HEATER TO LOW MODE 4 CHECK ALL DUCTING CONNECTIONS VEHICLE TM 2.2 2.3 2.7 INSTALL PROPER DUCTING CORRECTLY SWITCH HEATER TO LOW MODE 5 DEFECTIVE HEAT EXCHANGER 5.4.1 REPLACE HEAT EXCHANGER RESTART HEATER 6 HEATER DID NOT PROPERLY PURGE 2.5 3.5 CHECK ALL ELECTRICAL CONNECTIONS AND PURGE HEATER 3 TIMES. RESTART HEATER 7 DEFECTIVE ELECTRONIC PROGRAMMED CONTROLLER BOARD 5.2.5 REPLACE ELECTRONIC PROGRAMMED CONTROLLER RESTART HEATER