Viking Designer DEDO530T, Service Manual

Page: 45 / 73

Diagnostics
© 2008 Viking Preferred Service
45
Troubleshooting Guide ( Continued)
Problem Probable Cause Correction
No Convection Fan
Defective Fan Motor
Defective relay board
Defective Main Control Board
Defective oven wiring (shorted,
open, or burned). Replace fan motor
Replace Relay Board
Replace Main Control Board
Repair or replace defective wiring.
See
Page 51-54
Convection Fan turns slow - motor
humming in all cook modes.
Defective Fan Motor
Defective High Speed Capacitor
Defective Relay Board
Defective oven wiring (shorted,
open, or burned). Replace fan motor
Replace High Speed Capacitor
Replace Relay Board
Repair or replace defective wiring.
See Page 51-54
Convection Fan turns slow - motor
humming on Convection Bake,
TruConvec
™
, Defrost and
Dehydrate only.
Defective Low Speed Capacitor
Replace Low speed Capacitor
See Page 51-54
Error Code: MODEL ERROR
An incorrect model number has
been installed
Verify that proper header is installed.
See Page 7
Error Code: RTD ERROR Open or defective RTD Test the RTD from the connection on
the Main Control board. PU3 is for the
Upper oven RTD and PL3 is the lower
oven RTD. Resistance should be
1,050 ohms at ambient.
See Page 46
Error Code: PROBE ERROR
The meat probe is shorted or
defective.
The wiring to the probe is either
shorted or broken.
Check the probe between the tip of the
probe and the ring. Resistance should
read ______. Check the wiring
between the PU1 (Upper) and PL1
(lower) wiring.
See Page 50
Error Code: LATCH ERROR
The control is not able to lock
or unlock the door Check the SW1 and SW2 switches at
the Main Control Board Connection
PU2 (Upper) and PL2 (lower). Check
the Motor connection between P2 on
relay board and the main L2 (Black)
terminal block.
See Page 47-48
Error Code: KEYBOARD ERROR No Connection exists between
The keyboard and the control
board
Check the connections between
the P3 Connection on the main control
board and the Keyboard.
See Page 55