Carrier 38VMH-1P Service Manual page 46

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P4: DISCHARGE TEMPERATURE PROTECTION
DEFINITION
• Discharge temperature protection is activated when discharge temperature is higher than 230°F.
• System will restart once the discharge temperature (T5) is below 190°F.
POSSIBLE CAUSES
• Stop valve is closed
• Improper power supply
• Insufficient refrigerant in the system
• Damaged valve or filter resulting in large pressure ratio
• Damaged main board
A210288
Fig. 53 —P4 Troubleshooting Chart
*B Refer to resistance temperature sensor in Appendix.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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