Electronic Control System
3-15
#7019014 - Revision A - October, 2010
Built-In (BI) Series
Built-In (BI) Series
Manual Zone Disable Mode
Manual Zone Disable Mode allows a customer or Service Technician to switch one zone, or “compartment” OFF for
defrosting, interior cleaning, or diagnostic purposes, while allowing the other zones to continue cooling.
To initiate Manual Zone Disable Mode, the unit must first be switched OFF using the POWER key (See Figure 3-26).
Now, press and hold the WARMER key for the zone being disabled, then the POWER key, then release both keys,
at which time “- -” (double-dashes) will appear in place of temperature readings for the chosen zone (See Figure 3-
27).
To return the disabled zone to operational state, repeat the steps above.
NOTE:
• If switched OFF then back ON, the electronic control stores this mode-set in non-volatile memory, so the disabled
zone will remain disabled until the proper key sequence is performed to reenable the zone.
• The alarm system for the disabled zone is inactive during this mode.
• Always check set-points after returning unit to normal operation.
Figure 3-27. Then Press and Desired Zone WARMER Key along with the POWER Key
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