Wolf WWD30-2 Troubleshooting Manual

Troubleshooting Guides
TROUBLESHOOTING GUIDES
This section of the manual contains the General Troubleshooting Guide which will help the Service Technician trou-
bleshoot a Wolf WWD30 unit. Following the General Troubleshooting Guide is the Electronic Control System Test
Procedures to be performed after going through the General Troubleshooting Guide and determining that the elec-
tronic control system is suspect.
How to Use the General Troubleshooting Guide
The Table of Contents below indicate how the General Trouble Shooting Guide on the following pages is arranged.
Locate the description of the problem that the unit is experiencing from the Table of Contents, below. To the left of
the problem description in the Table of Contents is a letter. On the page indicated, locate that letter in the left col-
umn of the General Troubleshooting Guide. The center column of the General Troubleshooting Guide will identify
the possible causes for the problem. The information in the right column of the General Troubleshooting Guide will
explain what tests to perform and/or what action to take to correct the problem.
Before continuing, take note of the WARNINGS and CAUTIONS at the bottom of this page.
General Troubleshooting Guide Table of Contents
Error Codes Troubleshooting Guide .............................................................................................................................................. 5-3
Field Service Mode ....................................................................................................................................................................... 5-4
A. Unit does not function at all ................................................................................................................................................... 5-5
B. No Heat at Any or All Settings ............................................................................................................................................... 5-5
C. No Heat at PROOF Setting only ........................................................................................................................................... 5-5
D. Excessive Heat at Any or All Settings .................................................................................................................................... 5-5
E. Excessive Condensation in Drawer ....................................................................................................................................... 5-5
F. Food Dries Out ...................................................................................................................................................................... 5-6
G. One or more LCD (ON/OFF indicator, Temp. Range Indicator or segment(s) of Temp. Readout) does not illuminate ....... 5-6
H. LCD is black ........................................................................................................................................................................... 5-6
I. One or more LCD (ON/OFF indicator, Temp. Range Indicator or segment(s) of Temp. Readout) illuminated Constantly .. 5-6
J. Drawer Does Not Slide Smoothly .......................................................................................................................................... 5-6
K. Drawer Does Not "Pull In"........................................................................................................................................................ 5-6
IF REMOVING A WARMING DRAWER FROM ITS INSTALLATION FOR TROUBLESHOOTING PURPOSES,
-
REMEMBER THAT THE UNIT IS HEAVY AND COULD TIP AND/OR FALL WHEN PULLED FORWARD
BEYOND THE ANTI-TIP COMPONENTS, RESULTING IN SERIOUS INJURY OR DEATH.
TO AVOID ELECTRIC SHOCK, POWER TO THE UNIT MUST BE DISCONNECTED WHENEVER ACCESS-
-
ING AND/OR REMOVING COMPONENTS POWERED BY ELECTRICITY OR COMPONENTS NEAR OTHER
ELECTRICAL COMPONENTS. IF THE UNIT IS PLUGGED IN, BUT HAS NOT BEEN SWITCHED ON BY
PRESSING THE UNIT ON/OFF KEY, 115 VOLTS AC IS STILL PRESENT AT THE POWER
- Metal edges may be sharp. Use caution when servicing unit to avoid personal injury.
- The heating element can get very hot. To avoid personal injury use caution when servicing the unit,
making sure the heater has cooled before working on or around it.
- If accessing components under the shell, the insulation must be properly reinstalled and positioned.
Failure to do so may lead to damage to the surrounding cabinetry.
- Low voltage is used for most electronic control components. To avoid damaging the appliance, do NOT
apply 115V AC to electronic control components.
#814750 - Revision A - January, 2011
Warming Drawer WWD30-2
5-2
Page #
BOARD.