Troubleshooting - LG ARNU363DDA4 Installation Manual

TROUBLESHOOTING

Troubleshooting
Power Loss (Outage or Brownout)
All set points and advanced settings are restored after any power loss or interruption as all settings are stored in the Economizer controller's
non- volatile flash memory.
If the power falls below 18 VAC, the W7220 controller module assumes a power loss and the five (5) minute power up delay will become functional
when power returns above 18 VAC�
Alarms
The Economizer module provides alarm messages that display on the 2-line LCD.
When the unit is powered on, the module waits several seconds before checking for alarms. This allows time for all configured devices (e.g. sensors,
actuator) to become operational.
If one or more alarms are present and there has been no keypad activity for at least five minutes, the alarms menu displays and cycles
through the active alarms. Navigate to the alarms menu at any time. See Table 11 for the alarms menu.
Clearing Alarms
Once the alarm is identified and the cause removed (e.g. replaced faulty sensor), it can be cleared from the display.
To clear an alarm, perform the following:
1. Navigate to the desired alarm.
2. Press the button.
3. ERASE? displays.
4. Press the button.
5. ALARM ERASED displays.
6. Press the (Menu up/Exit) button to complete the action and return to the previous menu.
If the alarm still exists, it reappears within five (5) seconds.
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