TM 9-2350-230-12
Malfunction
Probable cause
Corrective action
PRESONNEL HEATER -
Continued
e. Flame detector switch out of
adjustment or defective
Adjust or replace switch as
f. Blower motor inoperative.
(1)
No electrical power to
(1)
motor Repair harness or notify
Support Maintenance.
(2)
Defective motor
(2)
If motor has power but will
not run, replace heater.
resistor
igniter if defective (fig.
defective replace heater.
h. Other causes
h. After eliminating causes "a"
through "g", replace heater
52. Heater starts but indi-
a. Lamp burned out
a. Press to test. Replace lamp
cator light will not
If burned out.
come on.
b. Open electrical circuit
b. Check circuits #564 and 565
harness or notify Support
Maintenance.
c. Flame detector switch out of
c. After heater has run 3 to 4
adjustment or defective
minutes, check voltage at
power, adjust or replace
53. Heater overheats and
a. Restriction in air flow
a. Remove obstruction from
shuts off
inlet and/or outlet.
b. Blower motor defective
b. Replace heater.
c. Excessive fuel flow (defect-
c. (Usually accompanied by
ive fuel control valve)
excessive smoke). Replace
heater.
54.Heater overheats and
Same causes as 53 above,
Replace overheat switch.
continues to run
plug defective overheat
Refer to 53 above to
switch
correct cause of over-
8-26