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5.1 GENERAL
The information in this section is intended to
assist both the operator and service personnel in
locating the general source of problems which may
occur with the High Efficiency Convection Oven.
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 which are
PROBLEM
Probable Cause
1. CONVECTOR FAN FAILS TO OPERATE.
a) Power to oven is off.
b) Control circuit breaker open.
c) Right oven door open.
d) ON-OFF switch off
e) Faulty circuit breaker, power
switch, door switch, fan motor, or
wiring.
2. GAS BURNERS FAIL TO IGNITE (BUZZER SOUNDS)
a) External gas supply shut-off
closed.
b) Ignition circuit locked out
c) Gas solenoid valve fails in closed
position.
d) Faulty control board.
e) Faulty electrode unit
f) Damaged or loose wire.
SECTION 5 TROUBLE-SHOOTING
TABLE 5-1 GENERAL TROUBLE-SHOOTING
5- 1
described in Section 3. If the problem cannot be
readily corrected, the operator should contact the
nearest Market Forge Service Agency for assistance
5.2 TROUBLE-SHOOTING GUIDE
A general trouble-shooting guide for use by
service personnel is given in Table 5-1
GUIDE
Remedy
Locate external circuit breaker for power and place
in ON position
Press MOTOR RESET
Close door
Place in ON position
Test each component and connecting wiring. Re
place as required
Open valve
Press IGNITION RESET
Replace valve.
Replace control board. See subsection 6.4.8 .
Replace electrode unit See subsection 6.4.5.
Trace all wiring from control board to controls.
Check to see that all wiring is secured, and that the
high and low voltage leads to electrode are proper-
ly connected and located at least 1/2" (13mm} from
ground.
S 2207
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