Auto-Zone Control Systems Auto-Zone CV & CV-EX Systems Installation & Operation (Version 01C) - Manual (Page 97)

Auto-Zone CV & CV-EX
Section 4
Start-Up and Troubleshooting 4-19
Blink Codes
The CV Controller uses LED2 to indicate various diagnostic conditions during powerup
and operation. Starting with power up, the LED blink codes are as follows:
• Off for five seconds
• LED2 blinks the board address (Address 14 = 14 blinks)
• Five second pause
• Twenty second time delay – LED2 blinks twenty times
• Status code is repeatedly blinked every ten seconds to indicate controller
status:
Priority No. of Blinks Status
Lowest 1 Normal Operation
- 2 Override Active
- 3 Bad Zone Sensor
N/A 4 Not Used for this System
Highest 5 Communication Failure
Table 4-1: Diagnostic LED Blink Codes
Only the highest priority failure code will be shown. You must correct the highest priority
alarm before other problems will be indicated.