TM 9-4520-258-14
3-2.
MALFUNCTION INDEX.
Refer to Table 3-1. Any malfunction requiring repair beyond the scope of the operator should be referred to Unit
Maintenance.
MALFUNCTION INDEX
MALFUNCTION
PAGE
1.
Unit Will Not Start ..............................................................................................................................
3-3
2.
Combustor Fan Does Not Operate.......................................................................................................
3-4
3.
Fuel Pressure Stays at 25 PSI or Less in HEAT AUTO or
HEAT MANUAL modes ......................................................................................................................
3-5
4.
Unit Flames Out Repeatedly (More than 3 times in a row) ..................................................................
3-6
5.
No Combustion in AUTO HEAT Mode ................................................................................................
3-7
6.
Excessive Black Smoke in Exhaust .....................................................................................................
3-10
7.
Fan Motor Slows Down or Indicator Lights Dim ...................................................................................
3-11
3-3.
TROUBLESHOOTING INDEX.
Troubleshooting procedures for malfunctions listed in the Malfunction Index are given in Table 3-1. Notify Unit
Maintenance for other malfunctions observed.
3-2
