When you say your temps are the same, humidity is the same etc...can you eleborate

In my experience most BP when provided with proper husbandry will eat.

First know that, as long as your BP does not loose too much weight he will be fine, second try to proceed by elimination to find out if there is anything that can be done so your BP resume feeding.

How long have you had your snake for?
How old is your BP?
How big is your BP (length, weight)?
What type of enclosure do you use?
How big is your enclosure?
Is your enclosure in a low traffic area?
What are your temps (cool & warm side)?
What is your humidity?
What type of thermometer/hygrometer do you use (dial,stick,or digital)?
What kind of hides do you provide (log, homemade, cubbyholes etc) and how many do you have?
Are your hides tight (all side touching your BP's body) and identical?
What do you usually feed to your BP (Rat, Mice and size)?