e.  0E8: Incorrect ODU Address 
1.  Error display:   
ODU display: 0E8 
2.  Applicable models:   
38VMA***HDS5-1 (208/230V-3Ph-60Hz) 
38VMA***HDS6-1 (460V-3Ph-60Hz) 
3.  Error definition:   
The address of ODU is > 2. 
4.  Possible causes:   
•  Incorrect address setting for ODU 
•  Damaged main board of ODU 
 
f.  20HO 10H0: Communication Error Between Main Control Board Chip and 
Compressor Drive Chip 
1.  Error display:   
ODU display: 10H0    20HO 
2.  Applicable models:   
38VMA***HDS5-1 (208/230V-3Ph-60Hz) 
38VMA***HDS6-1 (460V-3Ph-60Hz) 
3.  Error definition:   
10H0: Communication fault of main control chip and drive chip of compressor. 
A20H0: Communication fault of main control chip and drive chip of compressor B. 
4.  Possible causes:   
•  Improper power supply 
•  Damaged transformer 
•  Damaged main board 
 
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