TM 9-2350-230-12
Malfunction
Probable cause
Corrective action
PERSONNEL HEATER -
Continued
55. Heater starts and runs,
a. Clogged filter in line or
a. Clean or replace filter(s)
but stops after a short
pump
interval.
(Control box switch in
b. Flame detector switch out of
b. If indicator lamp goes out
RUN position)
adjustment or defective
when heater shuts itself off
adjust or replace flame
c. Overheat switch out of
c. Check voltage at terminal 30,
heater shuts itself off. If
no power and heater is not
overheated replace switch
56.Odor of fuel in ventilating
Fuel leak at standpipe
Tighten fuel line connections.
air stream.
57.Blower will not stop
Flame detector switch defect-
Replace switch.
after purge cycle
ive.
58.Heat output too low
a. HI-LO switch on LO
a. Switch to HI.
b. Clogged filter in line or
b. Clean or replace filter(s)
pump
c. Defective fuel control valve
or air valve
If defective, replace
heater.
59.Heater smokes exces-
a. Fuel accumulation due to sloe
sively or "bangs" on
starting or resistor)
igniter if defective If
resistor is defective,
replace heater.
b. Excessive fuel flow (defective
b. Replace heater.
fuel control valve).
NOTE. If banging is severe
and persists on several
successive starts, or if
smoking condition does not
clear itself after several
minutes of operation,
replace heater.
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