TM 10-4520-259-13&P
3-3.
TROUBLESHOOTING.
MALFUNCTION INDEX
Troubleshooting
Procedure
EXHAUST SYSTEM
Black smoke exits from burner exhaust duct................................................................................. 6
FUEL SYSTEM
Fuel pressure pulsates ....................................... .......................................................................... 4
Fuel pressure too high or too low .................................................................................................. 3
Fuel pump fails to deliver fuel to burner ................... ....................................................................5
WATER HEATER
Flame fails in burner ........................................ ............................................................................ 2
Water heater fails to start.............................................................................................................. 1
Table 3-1. Operator Troubleshooting Procedures
TM 55-1905-223-24-17
Malfunction
Test or Inspection
Corrective Action
1.
WATER HEATER FAILS TO START
Step 1.
Check that 208 V 3-ph electrical power is available and correctly connected to the water
heater. Check power connections to water heater.
If not correctly connected, check power source and cables.
Step 2.
Check load limit switch, if water heater has one, to see if it is tripped.
If tripped, reset load limit switch.
Step 3.
Check reset button on blower motor if water heater does not have a load limit switch.
Reset blower motor.
3-2
