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 4.
Remove combustion air blower (6) and check it for dirt, debris, and jams (Para 20-6).
If combustion air blower impeller (7) is jammed due to dirt and debris, clear jam.
If combustion air blower impeller (7) is not jammed due to dirt and debris, replace combustion air
blower (Para 20-6).
Step 5.
Check wire harness on fuel metering pump (8) for continuity.
If continuity is present, replace fuel metering pump (Para 20-9).
If continuity is not present, replace wire harness (Para 12-27).
Change 1
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