Real Time Clock Fail
system
Description
The data recorder real time clock has no valid date, and the unit alarms only.
Activation Conditions
The Real Time clock in the data recorder does not contain a valid date.
Unit Behavior
Alarm only
Reset Conditions
Set RTC OR Cycle Power
Corrective Actions
1. Check Real Time Clock: Check Real Time clock in the Unit Data or using CabinTech must show correct date and time. Change as needed. 2. Reset Microprocessor a. Disconnect battery cables for 30 seconds and then turn APU ON from AI. Verify Climate Control Module powers up correctly. b. Check for valid real time clock reading in Unit Data. Alarm is cleared automatically. c. Real Time Clock cannot be changed. Proceed to step 3. 3. Replace Climate Control Module a. Download customer configuration using CabinTech. Verify data retrieval OK. b. Replace and setup Climate Control module.