Wolf CT15E/S - Mode 4 Checking the Ambient Temperature of Thermistor on Power Board

Troubleshooting Guide
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DIAGNOSTIC MODE -
NOTE: Diagnostic Mode is not available in the 30” Model at time of print.
Diagnostic mode allows the Service Technician to inspect the functions of the cooktop controls. In diagnostic mode
the last eight error codes that have been recorded by the cooktop control can be accessed. A total of 15 different
modes can be accessed, once diagnostic mode has been initiated.
To initiate diagnostic mode, the unit needs to be in the “LOCK” mode. Then, press and hold the “OFF” keypad for
5 seconds. The cooktop controls will now enter into diagnostic Mode 1.
NOTE: If the “OFF” keypad is not released after 7 seconds, the diagnostic mode will be cancelled and the unit will
return to the “OFF” mode.
NOTE: If any other input signals are detected from the keypad, the unit will not enter diagnostic mode.
NOTE: When in diagnostic mode all heating units are off.
NOTE: The unit will exit diagnostic mode if no inputs are detected from the keypad in 20 seconds.
NOTE: If the “OFF” keypad is pressed again anywhere within the diagnostic program, the unit returns to the
“LOCK” mode of operation.
NOTE: There will be no audible signals during the diagnostic mode.
Initiating Different Modes
Mode 1 - Checking the LEDs
In this mode, ALL LEDs will blink at a rate of .75 seconds ON and .25 seconds OFF. This includes the “LOCK” LED
as well as the Zone indicators for the surface units.
Mode 2 - Checking the Cooling Fan
To enter Mode 2 while engaged in diagnostic mode, touch the “ON/OFF” or “+” keypad on the 1200W control.
When this is done the result will be:
• The bar lights on the 1200W control will illuminate 2 LEDs
and flash at the rate mentioned in Mode 1.
• The bar lights for the 2200W control will illuminate ALL LEDs and flash at the rate mentioned in Mode 1.
• The cooling fan relay will close, causing the cooling fan to turn on.
• When the “-” keypad for the 2200W control is touched, all bar lights on the 2200W control will turn off and
the cooling fan will turn off.
• When the “+” keypad for the 2200W control is touched, all bar lights on the 2200W control will illuminate
and the cooling fan will turn on.
Mode 3 - Checking the Electronic Hardware Version
To enter Mode 3 while engaged in diagnostic mode, touch the “+” keypad on the 1200W control. When this is done
the result will be:
• The bar lights on the 1200W control will illuminate 3 LEDs
and flash at the rate mentioned in Mode 1.
• The bar lights on the 2200W control will illuminate four groups of four LEDs and flash at the rate mentioned
in Mode 1. The illuminated bar lights are displayed as Hex Decimal Characters.
(See Figure 5-1).
Mode 4 - Checking the Ambient Temperature of Thermistor on Power Board
To enter Mode 4 while engaged in diagnostic mode, touch the “+” keypad on the 1200W control. When this is done
the result will be:
• The bar lights on the 1200W control will illuminate 4 LEDs
and flash at the rate mentioned in Mode1.
• The bar lights on the 2200W control will illuminate a number of LEDs based on the temperature of the
thermistor on the power board, using four Hex Decimal Characters and flash at the rate described in
Mode 1. (See Figure 5-2).