What was found
PASSING APPROX 10,000', MESSAGE ECAM WARNING OF BLUE HYD SYS OVERHEAT, COMPLIED WITH QRH. INDICATION REMAINED ON REMAINDER OF FLIGHT AND TAXI. R & R RESERVOIR OVERHEAT MONITOR UNIT, 38GR, REF AMM 29-33-12. OPS CHECKS GOOD. RAN ENGINES AND MOVED FLIGHT CONTROLS, ALL CHECKS NORMAL, NO OVERHEAT FAULT LIGHTS. OK FOR SERVICE.