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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