diff -r 8c7d87a2c094 -r 48d19ec83a49 thermferm/thermferm.c
--- a/thermferm/thermferm.c	Mon Aug 04 15:18:29 2014 +0200
+++ b/thermferm/thermferm.c	Mon Aug 04 15:25:13 2014 +0200
@@ -367,7 +367,8 @@
 			    I_err += unit->PID_err_old;
 			    D_err = err - unit->PID_err_old;
 
-			    Out = 0.1*P_err + 0.3*I_err + 0.02*D_err;
+			    Out = (0.1*P_err) + (0.3*I_err) + (0.02*D_err);
+			    //     Kp            Ki            Kd
 			    if (debug)
 				fprintf(stdout, "sp=%.2f pv=%.2f err_old=%.2f err=%.2f P_err=%.2f I_err=%.2f D_err=%.2f Out=%.2f\n",
 						sp, pv, unit->PID_err_old, err, P_err, I_err, D_err, Out);