Carrier 42QFD048D8S Service Manual page 110

TS13-INV: Low pressure protection diagnosis and solution
Description: Outdoor pressure switch cut off the system because low pressure is lower than 0.13 MPa, the LED displays
the failure code.
Recommended parts to prepare:
• Connection wires
• Outdoor PCB
• Low pressure protector
• Refrigerant
Troubleshooting and repair:
 Troubleshooting 