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Anthony Roberson IIAug 5, 2025
What to do if the High Pressure Switch (HP1) is open in my Carrier TRANSICOLD Integra 35X Refrigerator?
- CCory DillonAug 6, 2025
If the High Pressure Switch (HP1) is open in your Carrier TRANSICOLD Refrigerator, several factors could be the cause. The unit might be undercharged, or there could be noncondensibles in the system. Check the condenser fan to ensure it's working correctly. A failed discharge check valve (in standby or road mode) could also be the culprit, requiring replacement. Lastly, the switch itself might have failed.