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t. 0P4 0H6: Discharge Temperature Protection
1.
Error display:
ODU display: 0P4/0H6
2.
Applicable models:
38VMA***HDS5-1 (208/230V-3Ph-60Hz)
38VMA***HDS6-1 (460V-3Ph-60Hz)
3.
Error definition:
0P4 is reported when the maximum value registered for discharge temperature sensor on the main board is > 239°F.
0H6 is reported when 0P4 occur 3 times within a 100 minute period.
4.
Possible causes:
•
High discharge temperature caused by lack of refrigerant in the system
•
Damaged sensor
•
Damaged main board
•
Lack of spray cooling function caused by a spray valve improper operation
•
Low pressure resulting from refrigerant blockage on the high pressure side due to solenoid valve error (IDU, ODU)
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