To determine if the timer is defective, attach the voltmeter lead to point #3 shown in Figure "/! leaving the other voltmeter lead attached to the white or common terminal, 120 Volts AC present at this point indicates that the timer is not defective. No voltage at this point wouid indicate a defective timer, NOTE: Always be certain the timer is set to the portion of the cycle in question when making voltage checks, Some segments of the cycle have a short duration and can be misse&
Continuity Check.........
An alternate method of checking the timer is to disconnect the machine from the power source and make a continuity check_This continuitycheck of timer switches may be made by disconnectingthe lead from the timer terminals in question, and connecting the leads from your ohmmeter across the timer switch_
For example, if the motor will not start in the wash cycle, disconnect power from the machine and remove the wire from the timer'sBU_BK terminal (Figure 71)_ Connect one ohmmeter toad to
All timer switches may be checked in the same manner by referring to the Ester line chart and wiring diagram, and connectng the ohmmeter leads to the correct combination of terminaIs. NOTE: Correct interpretation of the meter reading is important. A continuity check of a switch should indicate no resistance.. A resistance reading of other than zero or infinity could be the result of damaged or burnt contacts which would reduce power to the component, Do not make a
continuity check with an ohmmeter when the machine is connected to a live eIectrical circuit. Damage to the meter wilt result.
Other electrical componentsin the dishwasher may be checkedin the same manner. Some resistance wil! be noted when checking motors, coils and heating elements,
67
