Carrier 50HCQA05 Service And Maintenance Instructions page 44

Serial Number Format
POSITION NUMBER
TYPICAL
1 2 3
0 4 0
POSITION
1--- 2
3--- 4
5
6--- 10
4 5 6
9 G 1
DESIGNATES
Week of manufacture (fiscal calendar)
Year of manufacture ("08" = 2008)
Manufacturing location (G = ETP , Texas, USA)
Sequential number
44
7 8 9 10
2 3 4 5