Electronic Control System
3-46
#7019014 - Revision A - October, 2010
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 3-89).
NOTE: If Fault Codes have been logged the control will enter Fault Code Recall Mode instead of Diagnostic Mode.
If this happens press the ALARM key to shift the electronic control system into Diagnostic Mode.
Then, while in Diagnostic mode press and hold either set of COLDER and WARMER keys, then the POWER key,
then release all three keys (See Figures 3-90). 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 3-91).
Figure 3-90. Initiate Self-Test Mode -
While in Diagnostic Mode, Press either set of COLDER and WARMER Keys and the POWER Key
Figure 3-91. When Self Test Mode Ends, Initiate Fault Code Recall Mode -
Press and Hold Either COLDER Key, Then the POWER Key
(Example Shown: “15 L 01” = Main Lights Relay Stuck Closed. No Voltage to Lights)
“tE St” = Self Test Mode is Active
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