As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA FLIGHT NR 2152 DURING CLIMB THROUGH 17,000, NR 1 BLEED HOT CAUTION LIGHT ILLUMINATED. CYCLING ON AND OFF. CAUTION LIGHT EXTINGUISHED AFTER SELECTING FLOW SELECTOR KNOB. PERFORMED BLEED AIR FUNCTION TEST. FOUND NR 1 ENGINE SLOW TO SWITCH FROM LP AIR TO HP AIR. REPLACED HIGH PRESSURE NR 1 SWITCH. REPLACED NR 2 HIGH PRESSURE SWITCH. OPERATIONAL TEST GOOD. AIRCRAFT RETURNED TO SERVICE.