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TZ-4 TOTALZONE® ZONE CONTROL PANEL
19 68-0259-1
Table 9. LED Indicators.
LED Color Illuminated Not Illuminated Flashing
Heat Red Heat call. No heat calls. High limit reached.
Cool Green Cool call. No cool calls. Low limit reached.
Purge Amber Purge mode. Not in Purge mode. • DATS failure: slow flash.
• OT failure: fast flash.
• DATS and OT failure:
alternating fast and slow flash.
Fan Green Fan only call. No fan only call. —
EM Heat Red Emergency Heat mode or
dual-fuel mode.
Not in emergency Heat mode or
dual-fuel mode.
—
Zones
1,2,3.4
Green Damper is open or
opening.
Damper is closed or closing. —