Tech Tips
High Liquid Pressure/
Low Subcooling
FI0145

• Low Airflow
• undersized duct, return and/or supply
• improperly installed duct, return and/or supply
• dirty air filter
• incorrectly adjusted blower drive package
• incorrect blower drive package
• air filter with excessive resistance to air flow
• closed supply air registers
• blocked return grill
• System components not correctly matched
• indoor coil
• refrigerant lines
• undersized indoor piston
• Incorrect Indoor Fan Motor and/or Fan Blades
• Indoor Fan Motor Running in Wrong Direction
• Indoor Blower Wheel Installed Wrong