LOW CHARGE= high superheat, low suction psi, indoor split, subcooling, head psi,& compressor amps.

OVER CHARGE= Low superheat, Normal indor split, High suction psi, subcooling, hed psi, and compressor amp draw.

LOW INDOOR AIR FLOW = Low superheat, suction psi, low to normal head psi. High indoor split. high to normal subcooling. not much effect on amp draw.

Mild Low Outdoor Air Flow = Low superheat and subcooling. High Suction and head psi. normal indoor split and normal to high amp draw.

Severe Outdoor low air flow = High superheat, suction psi, head psi, amp draw. Low indoor split, & subcooling.

Mild Restriction (Factory charge) = High superheat. Low suction, indoor split & amp draw. Normal to high subcooling. Normal to low head psi.

Mild Restriction (with excess Freon) = Normal Superheat, suction & indoor split. High subcooling & head psi. Low amp draw.

Severe Restriction (with excess freon) = High superheat, subcooling, amp draw & head psi. Low suction and indoor split.

Weak compressor valves = Low superheat, amp draw & head psi indoor split. High suction, subcooling.