Table 4-21. Hot Water Heater Troubleshooting.

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Table 4-20. Public Address Set, AN/PIC-2 Troubleshooting (CONTINUED)

TM-55-1905-219-14-8 Landing Craft Utility (LCU) 1667 Class Boston Hull Numbers 1667-1670 NSN 1905-00-168-5764 Manual

Table 4-21. Hot Water Heater Troubleshooting (Continued).

TM 55-1905-219-14-8

4-5. GENERAL (Continued).

Table 4-21. Hot Water Heater Troubleshooting.

NOTE

Refer to paragraph 4-65 for maintenance instructions.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

No hot water.

Step 1.

Check circuit breaker #6 on power distribution panel (P-401).

Tighten loose wires.

Reset circuit breaker.

Step 2.

Low line voltage.

Check incoming power.

Step 3.

Move thermostat dial up and down. A definite "snap" should occur.

Replace thermostat.

Water temperature below setting at all times.

Step 1.

Check thermostat adjustment.

Readjust if necessary.

Step 2.

Check that element is working on all phases. Clamp amprobe individually

around each of the three wires and compare readings. If reading is not the

same on all wires check for blown fuse.

If fuses are O.K. then element must be replaced.

4-80