TM 5-6115-434-12 Table 3-3.  Troubleshooting Malfunction Probable cause Corrective action 17 No water at water sys- a.  Low or no water supply a.  Check and replenish water ten outlets. supply. b.  Water system not properly b.  Refer to para 2-3b(5) for primed. proper priming instructions. c.  No 400 Hz power c.  Refer to para 2-16b for op- eration to deliver 400 Hz electrical power.  Re- place failed components as required. d.  400 Hz auxiliary main con- d.  Replace failed relay assem- tactor (K9) failed. bly (para 3-61c). e.  Cold water pump contactor e.  Replace failed cold water (K18) failed. pump contactor (K13) (para 3-61g). f.  Hot water pump contactor f.  Replace failed hot water (K15) failed. pump contactor (K15) (para 3-61h). g.  Circuit breakers (CB6), g.  Reset (press) circuit break- (CB19) or (CB11) open ers.  Replace failed circuit or failed breakers (CB6), (CB10), or (CB11), as required (para 3-55). h.  Cold water pressure switch h.  Replace failed cold water (S13) failed. (para 3-77). i.  Other causes i.  Refer other causes to direct pressure switch (S13) and general support main- tenance personnel. 18 No hot water. a.  Exhaust gas flow control a.  Replace failed flow control valve (K14). valve (K14). b.  Hot water temperature switch b.  Replace failed hot water (S12) failed. temperature switch (S12) (para 3-77). c.  Pressure switch (S11) failed c.  Replace failed pressure switch (S11) (para 3-77). d.  400 Hz auxiliary main con- d.  Replace failed relay assem- tactor relay (K9) failed. bly (para 3-61c). e.  Pressure regulator failed e.  Replace failed pressure regulator (para 3-77). f.  Hot water pump (B15) f.  Replace failed hot water failed. pump (B15) (para 3-77). g.  Other causes g.  Refer other causes to direct and general support main- tenance personnel. 19 Hot water excessively a.  Exhaust gas flow control a.  Replace failed flow control hot or turned to steam. valve failed. valve (para 3-77). b.  Hot water temperature switch b.  Replace failed hot water (S12) failed. temperature switch (S12) (para 3-77). c.  Other causes c.  Refer other causes to direct and general support main- tenance personnel. 20 Ventilating air system a.  No 400 Hz power a.  Refer to para -216b for op- will not start. eration to deliver 400 Hz electrical power.  Replace failed components as required. 3-13