48
Operation and maintenance instructions
- Conditions:
• the running hours feature must be enabled in advanced setup
- Causes:
• SERVICE ALARM: the fan operating time (in hours) has exceeded the configurable threshold
• STOP FAN: the fan operating time (in hours) has exceeded the configurable threshold. This alarm stops the fans
- Effects:
8.7 TYPE 7: MAINTENANCE ALARM
Displayed on HMI TACtouch
Code
Text displayed
Level
M.21
Operating hours
2
M.22
Operating hours - AHU off
3
TAC control boards
ALARM OUTPUT
AL dPa OUTPUT
LED ALARM
Fans
Alarm status
/
ON
Stopped if SERVICE STOP FAN
*
Reset via “fan run time” in advanced settings