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GENERAL
The information in this section is intended to assist both the operator and service personnel in locating the
general source of problems that may occur with the cooker. Before following any of the procedures given
in this section, the operator should be thoroughly familiar with the operating instructions and the function
of all controls that are described in the Operation section, pages 7-11. If the problem cannot be readily
corrected, the operator should contact the nearest Market Forge service agency for assistance.
Trouble-Shooting Guide
A trouble-shooting guide for use by service personnel is given in the table below.
Electrical Fault Isolation
Correction of an electrical failure first requires isolation of the fault to a single circuit or component. In
most cases, the nature of the failure and its effect upon the operation of the cooker will be sufficient to
narrow it down to one or more circuit elements. The Electrical Fault Isolation table on page 19 is provided
as a guide for isolating electrical faults.
Electrical Trouble-Shooting Procedures
Before performing the trouble-shooting procedures in this section, the serviceman must be familiar with
the function of all controls as described in the Operation section as well as with the Principles of
Operation described in Principles of Operation section, pages 14-16.
PROBLEM
1.
Indicator light fails to
light with timer set.
2.
Steam fails to enter
cooking compartment
with indicator light on.
3.
Steam enters
compartment
continuously.
Timer dial not turning.
TROUBLE-SHOOTING
GENERAL TROUBLE-SHOOTING GUIDE TABLE
PROBABLE CAUSE
a.
Power to cooker off.
b.
Door interlock switch
contacts not closed.
c.
Door interlock switch
faulty.
d.
Indicator light burned out.
e.
Faulty timer contacts.
f.
Faulty wiring.
a.
Faulty steam solenoid
valve.
b.
Faulty wiring.
a.
Constant steam position.
b.
Faulty thermostatic
switch.
c.
Faulty timer motor.
d.
Faulty steam solenoid
valve.
e.
Faulty wiring.
a.
Locate external circuit breaker for
incoming power and place in ON
position.
b.
Shut cooker door to close switch
contacts. Check alignment of door with
switch.
c.
Replace switch. See Door Interlock
Switch on page 20.
d.
Replace light.
e.
Replace timer. See 60-Minute Timer
on page 19.
f.
Inspect condition of wire and tightness
of all connections. Correct as needed.
a.
Replace valve. See Steam Solenoid
Valves on page 20.
b.
Inspect condition of wire and tightness
of all connections. Correct as needed.
a.
Move knob to timing location.
b.
Replace switch. See Cooking
Compartment Thermostatic Switch on
page 20.
c.
Replace timer. See 60-Minute Timer
on page 19.
d.
Replace valve. See Steam Solenoid
Valves on page 20.
e.
Inspect condition of wire and tightness
of all connections. Correct as needed.
17
REMEDY
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