Wolf CTI Series User manual

Troubleshooting Guide 27
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CT Induction Cooktop
Service Manual

Page 2
Induction Cooktop (CTI) Series
Induction Cooktop (CTI) Series
Troubleshooting Guide
5-2
#821684 - Revision B - March, 2013
DIAGNOSTICS MODE
To enter Diagnostics Mode, the unit must be in Lock
Mode (see Section 3, Electronic Control, page 3-6, for a
description of how to put the unit into Lock Mode).
Press and hold the universal OFF key for 5 seconds,
the controls will enter Diagnostics Mode 1. A beep will
sound after 5 seconds to let the user know that they can
lift their finger from the key (See Figure 5-1).
NOTES:
•If any other keypad sensor detects another input
signal, Diagnostics Mode will not engage.
•If the universal OFF key is not released after seven
seconds, Diagnostics Mode will be cancelled and
not engage. The unit will return to Lock Mode.
•All Induction Coils are disabled and there will be no audible signals during Diagnostics.
•If after 60 seconds no other inputs are detected, the controls exit Diagnostics Mode and return to Lock Mode.
•While in Diagnostics Mode, 1200W will refer to front 1200W coil for all sized cooktops, and 3000W will refer to
the control that operates the rear 3000W boost coil for all sized cooktops.
Upon entry to Diagnostics Mode, the LED Test will automatically start. To step through tests, the user will use the “+”
and “-” keys of the 3000W coil (the rear element, HI-POWER). The 3000W control will step up one LED for each
test to identify which test is being performed. See the individual descriptions for each model, in Figure 5-2 below).
OFF
CLEAR
Figure 5-1. Diagnostic Mode.
Press and Hold the OFF Key for 5 sec-
onds. Unit will beep after 5 seconds
Figure 5-2.
LED Test (First Test)
1. Upon entry to Diagnostics Mode, the LED Test will automatically start. To step through tests, the user will use
the “+” and “-” keys of the 3000W (the rear element, HI-POWER) inductor (See Figure 5-2).
2. During this test, all LEDs will stay on. Press the “+” or “-” keys of the 1200w inductor to turn all LED’s on or off.
3. To step back to the last known state test, press the “-” key under the HI-POWER Control Zone that pertains to
the appropriate Model being Diagnosed.
COOLING FAN TEST (Second Test)
1. To enter Cooling Fan Test, press the “+” key of the 3000W inductor. The bar graph will show 2 LEDs.
NOTE: This Test is only used for units that include a 120mm cooling fan (prior to serial #17600000).
2. The 1200W inductor will have all of the bar graph lights illuminated.
3. The cooling fan relay will turn ON causing the cooling fan to turn ON.
4. Press the “-” key of the 1200W inductor, all bar graph LEDs (1200W Control only) and fan will turn OFF.
5. Press the “+” key of the 1200W inductor, all bar graph LEDs (1200W Control only) and fan will turn ON.
6. Press the “-” key on the 3000W inductor to step back to the LED Test.

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Troubleshooting Guide
5-3 #821684 - Revision B - March, 2013
Induction Cooktop (CTI) Series
Induction Cooktop (CTI) Series
CONTROL TEMPERATURE TEST (Third Test)
1. To enter Control Temperature Test, press the “+” key of the 3000W inductor controls. The 3000W bar graph will
show 4 LEDs.
2. The 3-digit display illuminates Ambient Control Temperature in °F.
3 Press the “-” key on the 3000W inductor to step back to the Cooling Fan Test.
HEAT SINK THERMISTOR TEMPERATURE TEST (Fourth Test)
1. To enter Heat Sink Thermistor Temperature Test, press the “+” key of the 3000W element controls. The 3000W
bar graph will show 5 LEDs.
2. The 3-digit display illuminates Heat Sink THERMISTOR temperature in °F.
3. The 1200W control will show LEDs 1, 2 and 3 to indicate each heatsink temp. (36” has 3, 30” has 2 & 15” has 1)
4. To access each heatsink temperature, press the “+” and “-” keys of the 1200W controls.
1 LED = Generator Board #1: Center board for 15”; Right side of 30” or middle two coils of 36” units
2 LEDs = Generator Board #2: Left board 30” & 36” units
3 LEDs = Generator Board #3: Right board 36” units
5. Press the “-” key on the 3000W element to step back to the Control Temperature Test.
ERROR CODE INDICATOR (Fifth Test)
NOTES:
•See Error Code Chart, for a description of the error and action that should be taken.
•If one possible cause of an error code has been corrected, reset error history and verify operation. Only proceed
to other possible sources if problem still exists or if the error reoccurs.
•To clear Error code history press and hold the HI POWER key of the 3000W controls for 5 seconds.
•Error codes should be cleared after service is complete.
1. To enter Error Code Indicator Test, press the “+” key of the 3000W element controls. The 3000W bar graph will
show 6 LEDs.
2. The 1200W bar graph will show 0-16 bars based on which error code is being displayed in the Timer display. If
no errors were recorded, zero bars will illuminate and the Timer display will be blank.
3. The Timer display will show the corresponding error code stored in memory, and will be displayed as Exx.
4. Pressing the “+” & “-” keys of the 3000W will step through any of the recorded error codes. If there are no addi-
tional error codes.
5. When there are no errors stored or if you are displaying the first error code, press the “-” key of the 3000W
inductor to step back to the Heat Sink Thermistor Temperature Test.
6. To clear Error code history press and hold the HI POWER key of the 3000W controls for 5 seconds.

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Induction Cooktop (CTI) Series
Induction Cooktop (CTI) Series
Troubleshooting Guide
5-4
#821684 - Revision B - March, 2013
SOFTWARE VERSION (Seventh Test)
1. To enter Software Version, press the “+” key of the 3000W element controls. The 3000W bar graph will show 15
LEDs.
2. The Timer display will illuminate the software version (scrolling if necessary).
3. Press the “-” key of the 3000W inductor to step back to the Power Cycling Information.
LAST KNOWN STATE (Eighth Test)
All priority 1 errors will take precedence over priority 2 errors. If there are no known priority 1 errors recorded, the
software will record the LKS of the last recorded priority 2 error. If there are no priority 1 or 2 errors, the Timer dis-
play will continue to display LS. If a priority 1 error should occur, the LKS would be recorded and not any subse-
quent priority 2 error’s LKS.
1. To enter Last Known State, press the “+” key of the 3000W element controls. The controls will light up the LEDs
of the last known state.
2. The 3-digit display will display a “LS” right justified in the window.
3. Press the “-” key of the 3000W Inductor to step back to the Software Version.
4. Press the “+” key of the 3000W inductor will step forward to the LED TEST.

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Troubleshooting Guide
5-5 #821684 - Revision B - March, 2013
Induction Cooktop (CTI) Series
Induction Cooktop (CTI) Series
Error Mode
Error codes are organized in a priority-based scheme which allows for different behavior based on the priority of the
error. There are three priority levels, defined as follows:
Priority 1: Priority 1 errors are considered safety related or of such catastrophic scope that the control is considered
inoperable. These errors will be continuously displayed to the end user, indicating that a service call is required. No
user functions will be allowed, and any active functions will be cancelled upon generation of the priority 1 error. The
error can be canceled, but will re-generate if the condition which caused the error still exists. These errors will be dis-
played as a stationary LOCK (KEY) LED and an error code in the 3-digit display indicating a permanent error and
will not allow the control to return to Stand-By Mode.
Priority 2: Priority 2 errors will be displayed to the user only during an active operational mode or upon an attempt
by the user to enter an operational mode. The criteria for these errors, is that they are likely to limit the proper func-
tionality of the system and would normally cause some customer dissatisfaction. These errors can be cancelled and
will not be displayed again until the user again attempts to start an operational mode. Any active function on the CZ
for which the error has scope will be cancelled upon generation of the priority 2 error. Errors with system scope will
apply to all CZ’s; errors with CZ scope will apply only to the appropriate CZ unless otherwise noted. This level of
error will be expressed by a flashing LOCK (KEY) LED indicating a temporary error and allows the control to return
to Stand-By once the situation is permissible
Priority 3: Priority 3 errors are defined as errors which could cause some possible or conditionally impaired func-
tionality, most likely to be never noticed by the end user. These errors, although logged internally, will never be dis-
played to the end user.
Error Logging
Multiple instances of the same error will not be repeatedly logged – the error log will only show one instance of a
particular error.
NOTES:
•If one cause of an error code has been corrected reset error and verify operation. Only proceed to other possi-
ble sources of that error if the problem still exists or if the error reoccurs.
•To clear Error code history press and hold the OFF/ON key of the 1200W controls for 5 seconds.
Error Code Chart Abbreviations (used on Pages 5-6 thru 5-9):
F = Front (15”)
FC = Front Center (36”)
FL = Front Left (30”, 36”)
FR = Front Right (30”)
R = Rear (15”) ;
RC = Right Center (36”)
RL = Rear Left (30”, 36”)
RR = Right Rear (30”, 36”)

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Induction Cooktop (CTI) Series
Induction Cooktop (CTI) Series
Troubleshooting Guide
5-6
#821684 - Revision B - March, 2013
N/A
1. Insufficient venting.
Action: Verify air flow is not restricted and
verify ambient/control temp. using test #3
2. Fan failure
Action: Run cooling fan test #2
3. Faulty fan connection
Action: Check (J6) connection
4. Comm Board failure.
Action: Change Comm Board
1. Ambient temp. too high causing generator
heatsink sensor to alert control.
Action: Remove/Reduce external heat
source.
2. Induction generator failure.
Action: Verify heatsink temp. test #4.
3. Bad generator board.
Action: Change generator board.
Comm Board failure.
Action: Change Comm Board
Comm Board failure.
Action: Change Comm Board
1. Faulty cable connection.
Action: Check (J4) connection
2. Keyboard failure.
Action: Change Glass Assy.
3. Comm board failure.
Action: Change Comm Board
The control panel will turn
off display and shut off all
burners.
If ambient temperature
exceeds error tempera-
ture limit, unit will enter
Lock Mode until ambient
temperature falls within
acceptable temp. limits.
The burners will be
unavailable until heatsink
temperature falls below
194°F (90°C) limit.
Cooktop will enter Lock
Mode and display error
code. An open sensor
error will not be recorded
until 5 minutes of consec-
utive open sensor read-
ings and during burner
activation only.
If the A/D value exceeds
error A/D limit, the unit
will enter Lock Mode and
display error code in
timer display.
Cooktop keyboard shows
incorrect diode configura-
tion.
1
1
2
2
2
1
1
1
ERROR
PRIORITY NOTES POSSIBLE SOURCE(S) OF FAILURE / ACTION REQUIRED
DISPLAYED
ERROR #
No Indicator
E1
E2
E3
E4
E5
E6
E7
ERROR
CONDITION
Power loss
Ambient tempera-
ture too high
Generator 1:
Heatsink tempera-
ture too high.
Generator 2:
Heatsink tempera-
ture too high.
Generator 3:
Heatsink tempera-
ture too high.
Open ambient
thermistor.
Shorted ambient
thermistor.
Diode
Configuration
Error.

Page 7
1. Faulty cable connection
Action: Check (J1, J2, or J3) connections.
2. Induction generator failure
Action: Change generator board.
3. Com board failure.
Action: Change Com Board
Com Board failure
Action: Change Com Board
1. Keyboard failure.
Action: Verify key operation
2. Faulty cable connection.
Action: Check (J4) connection.
3. Keyboard failure
Action: Change Glass Assy.
1. Keyboard failure.
Action: Verify key operation
2. Faulty cable connection Action: Check (J4)
connection.
3. Keyboard failure
Action: Change Glass Assy.
1. Faulty cable connection.
Action: Check (J4) connection.
2. Keyboard failure.
Action: Change Glass Assy.
3. Com board failure.
Action: Change Com Board
Induction generator failure.
Action: Change affected generator board
Induction generator failure.
Action: Change affected generator board
Burners associated with
generator 1 disabled, if
communication between
com board and generator
1 fails.
Burners associated with
generator 2 disabled, if
communication between
com board and generator
2 fails.
Burners associated with
generator 3 disabled, if
communication between
com board and generator
3 fails.
Cooktop enters Lock
Mode and display error
code in timer display.
A watchdog timer will be
reset every key release.
If key release is not seen
for determined debounce
time, control will record
error.
A watchdog timer will be
reset every key release.
If key release is not seen
for determined debounce
time, control will record
error and effected burner
unavailable, until shorted
key error is corrected.
Control will enter Lock
Mode and display appro-
priate error message until
error is corrected.
If A/D value exceeds
error A/D limit, the effect-
ed burner will shutdown.
If A/D value exceeds
error A/D limit, the effect-
ed burner will shutdown.
2
2
2
1
3
3
1
2
2
2
2
E8
E9
E10
E11
E12
E13
E19
E20
E21
E22
E23
Generator 1:
Comm. Error
Generator 2:
Comm. Error
Generator 3:
Comm. Error
A/D Failure
Universal OFF key
Failure
Shorted Key
Failure
Read Line Failure
Generator 1:
Burner (F,FR,FC)
sensor shorted.
Generator 2:
Burner (FL) sensor
shorted.
Generator 1:
Burner (F,FR,FC)
sensor open.
Generator 2:
Burner (FL) sensor
open.
Troubleshooting Guide
5-7 #821684 - Revision B - March, 2013
Induction Cooktop (CTI) Series
Induction Cooktop (CTI) Series
ERROR
PRIORITY NOTES POSSIBLE SOURCE(S) OF FAILURE / ACTION REQUIRED
DISPLAYED
ERROR #
ERROR
CONDITION

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Induction Cooktop (CTI) Series
Induction Cooktop (CTI) Series
Troubleshooting Guide
5-8
#821684 - Revision B - March, 2013
LED board failure.
Action: Perform LED test #1 and if all
LEDs work, reset error.
Action: If one of the LEDs fails to illuminate
change the Glass Assy.
Induction generator failure.
Action: Change affected generator board.
Induction generator failure.
Action: Change affected generator board.
1. Induction generator failure.
Action: Perform Heatsink test #4 and if
appears ok, reset error and test operation
2. If error returns.
Action: Change affected generator board.
Effected burner is not
available.
The effected burner will
shutdown.
The effected burner will
shutdown.
The effected burner will
shutdown.
2
2
2
2
2
2
2
2
2
2
2
2
2
2
E30
E31
E32
E33
E34
E40
E41
E42
E43
E44
E45
E50
E51
E52
Generator 1:
Burner (F,FR,FC)
‘ON LED’ Failure
Generator 1:
Burner (R,RR,RC)
‘ON LED’ Failure
Generator 2:
Burner (RL) ‘ON
LED’ Failure
Generator 2:
Burner (FL) ‘ON
LED’ Failure
Generator 3:
Burner (RR) ‘ON
LED’ Failure
Generator 1:
Burner (R,RR,RC)
sensor shorted.
Generator 2:
Burner (RL) sensor
shorted.
Generator 3:
Burner (RR) sen-
sor shorted.
Generator 1:
Burner (R,RR,RC)
sensor open.
Generator 2:
Burner (RL) sensor
open.
Generator 3:
Burner (RR) sen-
sor open.
Generator 1:
Open heat sink
thermistor.
Generator : Open
heat sink thermis-
tor.
Generator 3:
Open heat sink
thermistor.
ERROR
PRIORITY NOTES POSSIBLE SOURCE(S) OF FAILURE / ACTION REQUIRED
DISPLAYED
ERROR #
ERROR
CONDITION

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Troubleshooting Guide
5-9 #821684 - Revision B - March, 2013
Induction Cooktop (CTI) Series
Induction Cooktop (CTI) Series
1. Induction generator failure.
Action: Perform Heatsink test #4 and if
appears ok, reset error and test operation
2. If error returns.
Action: Change affected generator board.
The effected burner will
shutdown.
2
2
2
E53
E54
E55
Generator 1:
Shorted heat sink
thermistor.
Generator 2:
Shorted heat sink
thermistor.
Generator 3:
Shorted heat sink
thermistor.
ERROR
PRIORITY NOTES POSSIBLE SOURCE(S) OF FAILURE / ACTION REQUIRED
DISPLAYED
ERROR #
ERROR
CONDITION
PROBLEM POSSIBLE CAUSE TEST / ACTION
“HOT” indicator stays on
No Pan Detection
Glass Surface too warm
Electrical Noise spike
Defective Thermistor
Bad Control Board
Incorrect Pan Type
Unit not wired properly
Verify Glass Temp Below 122°F (50 °C)
Check for other heat sources (e.g. Sun, warm
pans setting on surface …)
Check for Error Codes & follow suggested
action
Turn Breaker off for 5 min., reset and try
Check Resistance of Generator Thermistor (see
Figure 5-4)
Replace Control Board
Use only pans designed and tested for use with
Induction
Verify unit supplied with correct voltage. Low
voltage will allow lights to work but pan detec-
tion will not function.
PROBLEMS ASSOCIATED WITH INDUCTION COOKTOP
TO AVOID ELECTRICAL SHOCK, POWER TO UNIT MUST BE DISCONNECTED BEFORE DISASSEMBLING
COOKTOP.
Unplug to check Resistance of Thermistor
approx. 120K at room temperature.
Figure 5-4. Defective Thermistor.