TM 9-4120-385-14
Table 3-1. OPERATOR'S TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 1. Mode selector switch in wrong position.
Set selector switch to LO HEAT or HI HEAT as desired. Refer to
Step 2. Temperature control knob improperly set.
Set temperature control knob for desired temperature. Refer to
Step 3. Air filter dirty or clogged.
Remove and clean air filter. Refer to unit maintenance.
Step 1. Temperature control knob improperly set.
Set temperature control knob for desired temperature. Refer to
Step 2. Mode selector switch set to HI-HEAT instead of LO-HEAT.
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