diff -r c31ea86fec43 -r 56b008563db8 thermferm/thermferm.c
--- a/thermferm/thermferm.c	Fri Aug 01 09:25:38 2014 +0200
+++ b/thermferm/thermferm.c	Fri Aug 01 11:45:35 2014 +0200
@@ -231,7 +231,7 @@
     char                buf[1024], *filename, target[40], heater[40], cooler[40], fan[40], door[40];
     time_t		now, last = (time_t)0;
     units_list		*unit;
-    int			rc, run = 1, seconds = 0;
+    int			rc, run = 1, seconds = 0, minutes = 0;
 #ifdef HAVE_WIRINGPI_H
     struct tm		*tm;
     int			row;
@@ -380,6 +380,13 @@
 			filename = NULL;
 		    }
 		}
+
+		minutes++;
+		if (minutes == 60)
+		    minutes = 0;
+
+		if ((minutes == 15) || (minutes == 45))
+		    wrconfig();
 	    }
 	}
 	usleep(100000);