Carrier X2 2500a — Service Manual
If the contactor is pulled in but the pipes aren't cold, the manual says: Check the suction pressure at the service valve. If it is below 22 PSI, the low-pressure switch is open. But wait—the manual notes that on the X2 2500A, this switch is manual reset inside the control box, not automatic.
Have a repair story about the X2 2500A? Drop it in the comments below—just don't ask us for the PDF link (copyright law!) This post is for informational purposes. Always follow OSHA lockout/tagout procedures and local electrical codes. When in doubt, hire a licensed technician. carrier x2 2500a service manual
Based on common service calls, here is what the manual would tell you to check first: If the contactor is pulled in but the