Oven Display Not Working; Unresponsive Key Pad; Control Panel Does Not Rotate; Long Preheat Time - Wolf Wall Ovens Technical & Service Manual

PROBLEM
A. OVEN DISPLAY NOT
WORKING
B. UNRESPONSIVE KEY
PAD(S)
C. CONTROL PANEL DOES
NOT ROTATE
D. LONG PREHEAT
(In all modes except broil)
E. NO HEAT
(In all modes)
F. OVEN TEMPERATURE TOO
HIGH OR TOO LOW
G. TEMPERATURE PROBE NOT
WORKING
W W a a l l l l O O v v e e n n s s
POSSIBLE CAUSE
No power, circuit breaker tripped
Loose or defective wire connection(s)
Defective relay board
Defective control board
Defective head assembly assembly
Key panel in locked mode
Oven in sabbath mode
Loose connection to flat flex cable from
control panel assembly to oven control
board
In Self-Clean Mode or cooking mode
Actuator Switch defective
Jumper wire between oven control and
stepper motor loose/defective
Defective stepper motor
Drive motor assembly defective
Defective hidden bake element
Loose or defective wire connection(s)
Shorted or open element
Defective relay board
Hi limit tripped or open
Customer using wrong temperature
User Preference Offset miscalibrated
Defective RTD Sensor
Wrong cooking mode for probe
Probe not inserted all the way into the
receptacle
5-7

Troubleshooting Guide

TEST / ACTION
Reset circuit breaker. May have to call an elec-
trician
Repair or replace wiring
Perform testing procedure located at end of
section 5
Perform testing procedure located at end of
section 5
Perform testing procedure located at end of
section 5
Press and hold lock key for three seconds to
unlock
Press Off key to exit sabbath mode
Check cable connections. Unplug and reseat.
Test key again, still not working replace head
assembly
Control panel will not rotate when in cooking
modes
Check continutiy of switch, replace if defective
Check continuity of wire. Repair or replace
jumper wire if defective
Perform testing procedure located at end of
section 5
Replace drive motor assembly
Check for error codes in diagnostic mode.
Perform element testing procedure. Replace if
defective
Repair or replace wiring
Check for error codes in diagnostic mode.
Perform element testing procedure. Replace if
defective
Check for error codes in diagnostic mode.
Perform testing procedure located at end of
section 5
Check temperature reading of limit, should be
350°F. If not, rep[lace limit with correct part.
Reset
Refer to Use/Care Guide for operation
Check UPO setting. Refer to instructions on
page 3-3. Before making any temperature
changes to UPO, check oven temperature with
thermometer. UPO setting can be ±35°F.
Check ohms of RTD Sensor according to tech-
nical data. Replace if out of specification
Refer to Use/Care Guide for operation
Check for error codes in diagnostic mode.
Insert probe into receptacle first before initiating
diagnostic mode