diff -r 9eaaba49450f -r b34a1b2421fb thermferm/server.c
--- a/thermferm/server.c	Thu Aug 07 22:06:18 2014 +0200
+++ b/thermferm/server.c	Fri Aug 08 23:07:44 2014 +0200
@@ -1116,8 +1116,10 @@
 					/* Initialize log if the unit is turned on */
 					if ((unit->mode == UNITMODE_OFF) && (i != UNITMODE_OFF))
 					    initlog(unit->name);
+					syslog(LOG_NOTICE, "Mode from %s to %s via web interface", UNITMODE[unit->mode], UNITMODE[i]);
 					unit->mode = i;
 					/* Allways turn everything off after a mode change */
+					unit->PID_I_err = unit->PID_err_old = 0.0;
 					unit->heater_state = unit->cooler_state = unit->fan_state = 0;
 					device_out(unit->heater_address, unit->heater_state);
 					device_out(unit->cooler_address, unit->cooler_state);
@@ -1145,6 +1147,14 @@
 				    	unit->profile = xstrcpy(val);
 				    else
 				    	unit->profile = NULL;
+				    /*
+				     * Reset all output devices
+				     */
+				    unit->PID_I_err = unit->PID_err_old = 0.0;
+				    unit->heater_state = unit->cooler_state = unit->fan_state = 0;
+				    device_out(unit->heater_address, unit->heater_state);
+				    device_out(unit->cooler_address, unit->cooler_state);
+				    device_out(unit->fan_address, unit->fan_state);
 				}
 
 			    } else if (val && (strcmp(kwd, (char *)"PROF_STATE") == 0)) {