VCSO210SS
14
BLOWN MONiTOR FUSE TEST
1. Disconnect the power supply cord, and then remove the outer case and the back plate assembly.
2. Open the door and block it open.
3. Wait for 60 seconds to discharge the high voltage capacitors of the inverter unit.
4. Disconnect the high voltage wire from the magnetron terminal with insulated pliers.
5. Make the terminal (metal part) of the high voltage wire contact to the magnetron body with insulated pliers.
6. Now, the capacitors of the inverter unit are discharged.
7. Reconnect the high voltage wire to the magnetron terminal after discharging.
WARNiNG: Use the pliers that the portions of their handles are insulated completely to avoid an electric shock.
8. If the monitor fuse is blown when the door is opened, check the primary interlock relay,
secondary interlock switch and monitor switch according to the ”PRIMARY INTERLOCK SYSTEM TEST” procedure for
those switches before replacing the blown monitor fuse.
CAUTiON: BEFORE REPLACiNG A BLOWN MONiTOR FUSE, TEST THE PRiMARY iNTERLOCK RELAY, SECOND-
ARY/THiRD iNTERLOCK SWiTCH, DOOR SENSiNG SWiTCH AND MONiTOR SWiTCH FOR PROPER OPERATiON.
If the monitor fuse is blown by improper switch operation, the monitor fuse and monitor switch must be replaced with
“monitor fuse and monitor switch assembly” part number FFS-BA038WRKZ, even if the monitor switch operates normally.
The monitor fuse and monitor switch assembly is comprised of a 15 ampere fuse and switch.
9. Reconnect all leads removed from components during testing.
10. Reinstall the outer case and the back plate assembly.
11. Reconnect the power supply cord after the outer case and the back plate assembly are installed.
12. Run the oven and check all function.
CHECKiNG TEMPERATURE iN THE CONvECTiON (Bake or Roast) MODE
The following test procedure should be carried out with the oven is a fully assembled condition (outer case fitted).
It is difficult to measure the exact temperature in the convection oven. An accurate thermocouple type temperature tester
must be used. A low priced bi-metal type thermometer is not reliable or accurate. Position the thermocouple in the center
of the oven cavity. The temperature should be checked with outer case cabinet installed and set the oven temperature to
450°F in the convection mode (Bake or Roast). Approx. 10 minutes after preheat temperature is reached, the temperature
experienced may be approx. 30°F more or less than set temperature, however, in most cases the food cooking results will
be satisfactory. Difference in power supply voltage will also affect the oven temperature. The Household power supply volt-
age may sometimes become lower than the rated voltage (120V) and cause under-cooking. If the power supply voltage is
10% lower than the rated voltage, longer cooking time is required by 10% to 20%.
ERROR LiST
Error indication
Description
Condition
Menu concerned
Detection means
Check timing
Remarks
Wait. Oven is too
warm to use.
Inside tem-
perature error
Proof (fermenta-
tion)
Defrosting
Oven thermistor
One (1) second after
heating start
Error message indi-
cation.
Replace drip tray
or empty drip tray
and replace.
No dew tray
setting error
No dew tray has been
set.
No dew tray.
Dew tray switch
Any time
Remove resevior
Reservoir with
water pres-
ence error
There is water in res-
ervoir when remained
water is discharged.
Discharging
remained water
Water level sensor
After one (1) second
from start of heating
(manually)
Water is frozen.
Please refer to
instructions in
operation manual.
Freezing error Low engine tempera-
ture error
Engine usage
menu
Oven thermistor
As soon as heating
starts
Fill water reser-
voir.
Not enough
water
Lack of necessary
amount of water
Engine usage
menu
Water level sensor
After 30 seconds for
automatic menu and
after one (1) second
from start of heating
for manual operation
thermistor level is
starting higher than
it should be for the
beginning of proof
(fermentation) or
defrosting.
When oven
temperature is below
90C [194F] this error
will is released" and
cooking can resume.
