As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH THE FLT DECK TEMPERATURE CONTROL IN AUTO THE TEMPERATURE VARIES WILDLY WITH NO PILOT INPUT. TEMPERATURE OSCILLATES FROM APPROXIMATELLY 18-26 DEG.(<P>PERF OPS CHECK IAW AMM 21-51-00. OPS CHECK GOOD. NO FLUCTUATION NOTED ON AUTO OR MANUAL FUNCTIONS.</P>)