TM 5-2420-230-24-1
Table 3-6. Unit Troubleshooting Table. -- Continued
Malfunction
Test or Inspection
Corrective Action
ARCTIC HEATER 7-DAY TIMER DISPLAYS ERROR CODE. -- CONTINUED
Step 6.
Check arctic heater air intake (9) and exhaust pipe (10) for damage or blockage.
If air intake (9) or exhaust pipe (10) is blocked, remove blockage.
If exhaust pipe (10) is damaged, replace exhaust pipe (Para 20-5).
Step 7.
Test fuel metering pump (8) (Para 20-9).
If fuel metering pump (8) fails test, replace fuel metering pump (Para 20-9).
If fuel metering pump (8) passes, replace flame sensor (Para 20-8).
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