Market Forge Industries 4200, Руководство пользователя

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11
TROUBLE-SHOOTING
ELECTRICAL FAULT ISOLATION GUIDE
FAILURE FAULT LOCATION
1. Oven will not operate when the thermostat is set. Incoming power
Door switch
Thermostat control
ON-OFF switch
Cool down switch
Contactor
Wiring
a.
b.
c.
d.
e.
f.
g.
2. Intermittent operation of heaters. Thermostat control
Contactor coil
Wiring
a.
b.
c.
3. Convector fan fails to operate. Cool down switch
ON-OFF switch
Door Switch
Fan motor
Wiring
a.
b.
c.
d.
e.
4. Indicator light off, heater under power. Indicator light
Wiring
a.
b.
5. Uneven heating. Heating elements
Wiring
a.
b.
6. (Elements Only) fails to come on. Check switch
Check hi-limit switch
Check wiring
a.
b.
c.
WE RECOMMEND THAT SERVICE BE PREFORMED BY A QUALIFIED MARkET
FORGE AUTHORIZED SERVICER. SERVICE PERFORMED BY OTHERS WILL VOID
WARRANTY. MARkET FORGE IS NOT RESPONSIBLE FOR REPAIRS MADE BY
OTHER THAN AUTHORIZED SERVICE AGENTS.
WIRING:
All the electrical components of the model
4200 (ON-OFF switch, door switch, thermo -
stat control, contactors, fan motor, and indi -
cator light) are connected to each other by
wiring shown on page 5. If all the electrical
components are operating correctly and the
incoming power has been checked, but the
unit fails to operate, the fault lies in the wir -
ing.
Using an ohmmeter, wiring continuity between
the connections, shown in the wiring diagram
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 to provide a good electrical
connection.