B757 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 17; Flight Crew Total 2225; Flight Crew Type 1505
Physiological - Other; Human-Machine Interface
Aircraft Equipment Problem Critical
Flight Crew Diverted
Aircraft
Flight Deck Temperature Controller was deferred. While climbing out on the departure passing 13;000 feet the FLT DK TEMP was indicating 83 Degrees F. The temperature continued to climb. At approximately 31000 feet the temperature indicated 93 F. The Captain and I conferred about the excessive heat. The Captain then contacted Dispatch and Maintenance Control as the Pilot Monitoring and I continued to fly the aircraft as the Pilot Flying. The Captain and I decided that we needed to divert due to the 'extremely Excessive Temp on the Flight Deck' and that it would be 'Unsafe to Continue ' as the temperature continued to climb to the Maximum indicated 99 F at 37000 feet. We conducted a normal uneventful diversion and landing.
[Report narrative contained no additional information.]
A Flight Crew reported diverting due to being unable to control the temperature in the cockpit.