Self-Test Mode - Sub-Zero Wolf BI Series Service Manual

Built-In (BI) Series
Built-In (BI) Series

Self-Test Mode

Initiating Self Test Mode forces the electronic control to cycle through all relays and triacs, switching components ON
and OFF, and check for correct feedback information from various electrical components. Then, if a relay or triac
fails to function properly, or if incorrect feedback is received, the appropriate fault codes will be logged.
To initiate Self Test Mode, the unit must be ON and in Diagnostic Mode (See Figure 2-89).
NOTE: If Fault Codes have been logged the control will enter Fault Code Recall Mode instead of Diagnostic Mode.
If this happens touch the ALARM key to shift the electronic control system into Diagnostic Mode.
Then, while in Diagnostic mode touch and hold either set of COLDER and WARMER keys, then the POWER key,
then release all three keys (See Figures 2-90). Self Test Mode will last approximately five (5) seconds, during which
"tE St" will be displayed in the LCD. At the end of the self test, the current compartment temperature readings will
appear in the LCD.
When Self Test Mode does end, it will be necessary to initiate Fault Code Recall Mode in order to view any fault
codes that may have been logged during the self test (See Figure 2-91).
LIGHTS ICE MAKER MAX ICE
Figure 2-89. Initiate Diagnostic Mode First - Touch and Hold Either COLDER Key, Then the POWER Key
LIGHTS ICE MAKER MAX ICE
While in Diagnostic Mode, Touch either set of COLDER and WARMER Keys and the POWER Key
LIGHTS ICE MAKER MAX ICE
Figure 2-91. When Self Test Mode Ends, Initiate Fault Code Recall Mode -
(Example Shown: "15 L 01" = Main Lights Relay Stuck Closed. No Voltage to Lights)
COLDER WARMER
"tE St" = Self Test Mode is Active
COLDER WARMER
Figure 2-90. Initiate Self-Test Mode -
COLDER WARMER
Touch and Hold Either COLDER Key, Then the POWER Key
(SWS #4380000)
(SWS #4380000)
COLDER
COLDER
COLDER
2-49
Electronic Control
WARMER PURE AIR ALARM
WARMER PURE AIR ALARM
WARMER PURE AIR ALARM
7040317 - Revision A - September, 2015
POWER
POWER
POWER