TM 10-4510-206-14
5-7.
REPAIR PROCEDURES (CONT'D)
g.
Ignition Transformer.
These procedures test the ignition transformer.
If the transformer fails the test, replace the transformer.
1.
Disconnect ignition transformer primary wires at water heater
control box and disconnect ignition wires at transformer.
2.
Check resistance between two wires.
Resistance should be approxi-
mately 7 ohms. A reading of O or infinity shows a defective trans-
former.
3.
Check resistance between one wire and transformer case.
Resistance
should be infinity (open circuit).
A short (0 ohms) shows a defec-
tive transformer.
5-41
