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Buzzer
If the buzzer does not sound at the termination of the operator-selected timer setting (timer dial
returned to "0-Minute" position), the fault may be a defective buzzer. Buzzer operation is verified using
an AC volt-meter at buzzer coil connections with input power on and selector switch and coinciding
timer dial set at the "0-Minute" position. If voltage is 120 volts, the fault is in the buzzer, which must be
replaced. If 120 volts is not present, the fault is in the wiring or control components (timer or selector
switch).
Cold Water Condenser Circuit
If during cooker operation steam exits from the drain line opening (located in lower boiler compartment)
and the condensing system fails to operate, as evidenced by repeated discharge of water from the drain
line, the condensing circuit is malfunctioning. The failure can be caused by a defective condenser
thermostat or cold water solenoid coil, or by wiring failure. To test condenser thermostat, refer to
Cooking Compartment Thermostatic Switch on page 22.
If the condenser thermostat functions correctly, but either of the cold water solenoid valves fails to
operate, the cause might be a faulty valve coil. A defective coil is found using an AC volt-meter to check
the voltage at the coil wire terminals with the cooker compartment in operation. If voltage of 120 volts
is present and the valve fails to open, the fault is in the valve coil. Defective valve coils are separately
replaceable.
Wiring
All of the electrical components of the cooker (timers, indicator lights, etc.) are connected to each other
by wiring shown in Figure 4 on page 22. If all of the electrical components are operating correctly (and
the incoming power has been checked), but the cooker fails to operate, the fault lies in the wiring.
Figure 4, on page 22 is a diagram that shows all terminals and interconnections within the electrical
circuits. All numbered terminals are identified and all leads number coded as shown. Connections can be
easily removed.
Figure 5, on page 23 shows the same information schematically and is an aid in isolating circuits for
testing. Using an ohmmeter, wiring continuity between the connections shown on the wiring diagram
(Figure 4 on page 22) is readily verified. This is best done in stages, removing only those wires required
for each continuity check. As each lead is replaced, it should be checked for evidence of corrosion, and
cleaned if necessary. All leads must be tightly attached so as to provide a good electrical connection.
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