(TROUBLE 2) Oven does not operate at all, Display window does not display any figures, and no input is accepted.
CONDITION
1. Fuse blows.
CHECK | RESULT | |
Check continuity | Continuity. | |
of monitor | ||
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switch (with |
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door closed). | No continuity. | |
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Replace fuse |
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CAUSE
Malfunction of the monitor switch.
REMEDY
Replace fuse, primary, monitor, secondary switches, and RELAY(RY2) of P.C.B Assembly.
Check continuity |
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of primary |
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switch (with |
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door opened). |
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| No continuity. |
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Check continuity | Continuity. | |
of secondary | ||
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switch (with |
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door opened). | No continuity. | |
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Shorted contact at 
the primary switch.
Malfunction of secondary switch.
Replace fuse, primary, monitor, secondary switches, and RELAY(RY2) of P.C.B Assembly.
Replace fuse, primary, monitor, secondary switches, and RELAY(RY2) of P.C.B Assembly.
Disconnect one | Normal. | |
side of the wire | ||
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lead connected |
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from transformer | Fuse blows again | |
to the high | ||
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voltage |
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capacitor and |
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operate the unit. |
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Defective high |
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| Replace high |
voltage capacitor. |
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| voltage capacitor. |
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Defective high volt- |
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| Replace high volt- |
age transformer. |
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| age transformer. |
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NOTE : All these switches must be replaced at the same time. Refer to page
2.Fuse does not blow.
| Check continuity |
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| No continuity. |
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| of thermostat. |
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| Continuity. |
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Check continuity 
No continuity. of power supply
cord.
Defective thermostat.
Defective power supply cord.
Replace thermostat.
Replace power supply cord.
