Jenn-Air JEC0530ADB, Сервисная инструкция

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Troubleshooting Procedures
!
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to cooktop before servicing, unless
testing requires power.
10 16023537
©2004 Maytag Services
CAUTION
!
• Verify proper grounding before checking for trouble.
• Be careful of the high voltage circuit.
• Do not touch any part of the circuit on the printed circuit board, since static electric discharge may damage the
control panel. Always touch yourself to ground while working on this panel to discharge any static charge built
up on your body.
Electronic Touch Control Troubleshooting
Symptom Possible Cause Correction
No element operation (power
board disables power to
elements)
Communication failure.....................................
(power board disables power to elements
after 10 second communication loss
between control board and power board)
•
Verify power to unit.
•
Verify power to power board.
•
Check connection between power
and control board.
LOCKED LED illuminated,
electronic control locked when
power applied (dual, triple or
bridge elements not selected),
no audible alarm
Checksum failure (control board) ....................
•
Replace control board.
No LEDs, electronic control
locked, 1 audible beep ON LED failure (control board) ........................
•
Replace control board.
2 LEDs flash, (user must lock
cooktop to evoke this display),
no element operation, no
audible alarm Hardware watchdog error (power board).........
•
Replace power board.
3 LEDs flash, electronic control
locked, 1 audible beep
Redundant OFF key input line is not
operating properly (control board) ...................
•
Replace control board.
6 LEDs flash, electronic control
locked, no audible alarm A/D failure (control board) ...............................
•
Replace control board.
7 LEDs flash, electronic control
locked, no audible alarm
Shorted temperature probe (power board) ......
Shorted input (power board)............................
•
Verify sensor resistance and
connections.
•
If symptoms persist, replace
power board.
8 LEDs flash, electronic control
locked, no audible alarm
Open temperature probe or open input
(power board) ..................................................
•
Verify sensor resistance.
•
If symptoms persist, replace
power board.
9 LEDs flash, electronic control
locked, no audible alarm A/D failure (power board) ................................
•
Replace power board.
10 LEDs flash, electronic control
locked, no audible alarm RAM test failure (power board)........................
•
Replace power board.
11 LEDs flash, electronic control
locked, no audible alarm Checksum failure (power board) .....................
•
Replace power board.
12 LEDs flash, electronic control
locked, no audible alarm
Communication failure (control board * ) ...........
•
Verify connections.
•
If symptoms persist, replace
control board.
All LEDs flash, no element
operation, 3 short audible beeps
(continuous
** )
Over temperature indication ............................
Multiple keys detected (control board),
shorted key ......................................................
•
Verify sensor resistance.
•
If symptoms persist, replace
control board.
*Control Board resets the Power Board every 15 seconds.
**Audible alarm (beeps) will not occur if all elements are turned off.