FUEL PUMP AND IGNITION DRIVE MOTOR WILL NOT START WITH HEATER CONTROL SWITCH IN HEATER ON POSITION (CONT).

TM 3-4230-209-30&P

2-12

TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

WATER HEATER (CONT)

4. FUEL PUMP AND IGNITION DRIVE MOTOR WILL NOT START WITH HEATER CONTROL SWITCH IN HEATER ON POSITION (CONT).

Step 2. Check wire No. 1 for continuity using the following procedures:

a. Remove thermal delay relay tubes TD1 and TD2 from their sockets.

b. Use a multimeter to check continuity between ends of wire No. 1. Stick one multimeter probe into TD1 socket, hole 3, and the other

multimeter probe into TD2 socket, hole 2.

Replace wire No. 1 if anything other than continuity is indicated.

Reinstall thermal delay relay tubes TD1 and TD2 back into their sockets.