Table 2-2. Unit Troubleshooting (Continued)
TEST OR INSPECTION
WATER HEATER BURNER FAILS TO IGNITE OR IGNITION IS DELAYED. (Cont)
Remove conduit connector (2) and adapter (3) from transformer (7).
Remove wires from conduit.
Remove two nuts (5), lockwashers (6), and transformers (7).
Install new transformer (7), two lockwashers (6), and nuts (5).
Install adapter (3) on transformer (7). Install wires (4) in conduit and
install conduit connector (2) on adapter.
Connect two electrode leads (1) to transformer (7).
Connect two transformer wires to contactor in control box. Refer to
Appendix E, figure 5. Remove tags.
If blue spark is present in sight glass, proceed to next step.
Step 10. Check for breaks or cracks in electrode porcelain.
If electrode porcelain has breaks or cracks, replace electrode. Refer to
If porcelain does not have damage and problem persists,
Check for soot buildup in UV scanner tube or on UV scanner eye.
blockage in UV scanner tube.
Check for any
10. WATER HEATER BLOWER MOTOR CIRCUIT BREAKER SWITCH
CONTINUED TO TRIP.
Check fuel pump and motor for obstructions.
If obstruction is found, clean or remove obstruction.
If no obstruction is found, proceed to next step.
Loosen setscrew at fuel pump shaft and check for seized fuel pump or motor. Refer to
If motor or fuel pump is binding, replace fuel pump and/or motor.
If motor and fuel pump are serviceable and problem persists, notify your