2006 Mazda 3 Emergency Brake Light Intermittently On - And No AC When On?

[farmer_ned_flanders]

A few months ago, the "e-brake" light began lighting periodically when driving. When this is lighted, the AC no longer blows cold. Fan works, but no cold air. Brake fluid level is OK. No issue with freon, as the AC later begins blowing cold when the e-brake light goes back off. This is now happening with increasing frequency.

Any ideas are greatly appreciated