1. Turn the main switch on.
2. Measure the resistance with an ohmmeter across the B terminal and the AC terminal.
3. If 0 ohm is not indicated, the B โ AC contacts of the main switch are faulty.
1. Turn the main switch on.
2. Measure the resistance with an ohmmeter across the B terminal and the AC terminal.
3. If 0 ohm is not indicated, the B โ AC contacts of the main switch are faulty.