Table 4-2. Unit Maintenance Troubleshooting - Continued
TEST OR INSPECTION
8. COMBUSTION FLAME OUT ON OVERHEAT
Step 1. Inspect for damaged fuel control valve (1), capillary (2), and temperature probe (3).
Replace fuel control valve if valve capillary or probe is damaged.
Step 2. Temperature probe (3) of temperature selector valve improperly positioned in air stream.
Adjust probe to correct position.
9. INCORRECT OR FLUCTUATING DISCHARGE AIR TEMPERATURE
Inspect for damaged temperature gauge (1), capillary (2), and probe (3).
Replace temperature gauge if gauge, capillary, or probe is damaged.
Inspect for damaged temperature selector valve (1), capillary (2), and probe (3).
Replace temperature selector valve if valve, capillary, or probe is damaged.