Viking VCSO210SS Service Manual page 21

TEST MODE
HOW TO SET TEST MODE
(Power ON/door closed state)
[STOP/CLEAR] [STEAM CONVECTION] [MICROWAVE] [OPEN DOOR]
Within 1 sec.
No. Test mode
Measured A/D values are displayed on one screen.
Monitoring of various
00
A/D values
03 Thermistor check
10 AH with no load
Steam (water level)
check
Microwave power on at 100% for 1 minute .
(2) Steam heating
Activate STEAM COOK for a maximum time of 20 minutes
(with the water tank filled to level 2. Test mode checks:)
NOTE:
Please only use test modes 00, 03, and 10 for service! Other test modes are factory only settings and can
significantly alter the ovens performance without the correct factory settings and test equipment.
Within 1 sec. Within 1 sec.
Description
[1] H-side water level sensor
[2] L-side water level sensor
[3] Oven thermistor (oven mode)
[4] Oven thermistor (proofing mode)
[5] Engine thermistor
[6] Dew tray switch
Convection mode heating oven to 350F. Reference bits and
measured temperature A/D values are displayed in hex.
(1) Noise check with no water load placed inside oven
AH judgment begins after [START] key.
The first 16 seconds no microwave power
(fans removing residual moisture).
Software is checking how much microwave noise the AH
sensor is detecting. Some noise (less than 16 bits) is not a
problem for normal AH sensor operation. However, noise
levels of 16 bits or greater will trigger sensor fault before
normal moisture has occurred. [Low moisture foods, like
popcorn, depend upon good AH sensor operation.]
*In the event of sensor fault or 16 or more bits, not
acceptable is indicated by "- - 10" and the test mode will not
proceed next part, steam heating.
2.1) Check whether the water level is at 2 level when starting.
2.2) Check whether the water level changes as steam is
generated
2.3) if an open/ short circuit of the engine thermistor.
eliminate. step (1) of test mode is doing this. step (2) will not
start if bit level is too high.
(3) Common Judgment indication
Acceptable 11 11 The water level sensor, ETH and AH are perfect.
Unacceptable 11 01 Engine thermistor failure
10 00 Water level sensor failure or no water (when starting)
01 00 H-side water level sensor failure (when starting)
00 11 (Water level measurement in progress)
- - 10 AH failure (others not checked yet)
Pease note: test mode can be stop if already reach "11 11"
before the 20 minutes maximum.
(Set the number (initial number: 04) by [ENCODER DIAL] [START]
[DIRECT SETTING KEY]
Output
OFF
C Heater, RY1
C Fan, OL
DC Fan (cooling)
Exhaust Fan
FM
FM, OL, RY3
DC Fan (cooling)
DC Fan (ventilation)
Exhaust Fan
Microwave (full power)
FM, OL, RY3
DC Fan (cooling)
DC Fan (ventilation)
Exhaust Fan
E heater
Tube Pump
FM, OL, RY1
DC Fan (cooling)
Exhaust Fan
All relays are OFF
21
VCSO210SS
Display example
TEST00
Measured value
WATER H XX [1] XX bits
WATER L XX [2] XX bits
OVEN TH XX Y Y [3] XX bits [4] YY bits
ENG TH XX [5] XX bits
DEW SW XX [6] XX bits
TEST03
Reference value
XX YY XX bits
Measured value
CONV YY bits
AH judgment level indication
TEST10
10 00
AH level indication in progress
TEST10 Judgment: 16 bits
Example:
10 09 9 bits detected
(The max. value is
indicated in hex.)
MICRO
Error indication
TEST10
16 or more bits detected
- - 10 AH failure
TEST10
00 10
STEAM
Judgment indication
TEST10 Acceptable
11 11
TEST10 Unacceptable
H-side water level
sensor failure
01 00