How is this possible on a 30RAP106. The IOM says it could!

This is what it says:

T126 Alert Circuit A High
Head Pressure
Compressor operation outside
of operating envelope. Circuit shut down
Automatic, only after
first 3 daily occurrences.
Manual reset thereafter.
Reading from OAT
sensor must drop 5 F
(2.8 C) before restart


And these are the possible causes:

Faulty transducer, low/
restricted condenser
airflow, low refrigerant charge,
faulty EXV