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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

Summary of Contents for CTI Series

Page 1: ...Troubleshooting Guide 27 subzero com 800 222 7820 CT Induction Cooktop Service Manual ...

Page 2: ...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...

Page 3: ...l 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...

Page 4: ...ce 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 eleme...

Page 5: ... 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 ...

Page 6: ...e 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 min...

Page 7: ...tween 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 unt...

Page 8: ...d 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 sen...

Page 9: ...an 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...

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