TM 9-2350-247-20-1
COOLANT HEATER MALFUNCTIONS—Continued
0086 00
5Y
1. Turn HEATER SWITCH ON. Do not stop at OFF position.
2. Does BLOWER stay ON?
YES
NO
GO TO IY (PAGE 0086 00-9)
6Y
1. Run heater on HI for ten minutes
2. Feel exhaust temperature. Does heater continue to produce hot
exhaust for ten minutes?
YES
NO
GO TO JY (PAGE 0086 00-10)
7Y
1. Check to see if flame detector switch has been adjusted.
2. Has flame detector switch been adjusted?
YES
NO
7YN
1. Flame detector switch needs
adjustment.
2. Notify your supervisor.
8Y
1. Faulty flame detector switch.
2. Notify your supervisor.
BY
1. Remove indicator cover lens (1) and bulb (2).
2. Measure resistance between bulb center contact and base for
continuity.
3. Does multimeter indicate any continuity?
YES
NO
BYN
1. Replace indicator bulb
(WP 0472 00).
2. Verify no faults found.
0086 00-2
