diff -r 5fd12d9f3f84 -r fd36bedab944 thermferm/thermferm.c
--- a/thermferm/thermferm.c	Mon Jun 26 13:58:11 2017 +0200
+++ b/thermferm/thermferm.c	Mon Jun 26 19:21:07 2017 +0200
@@ -1240,7 +1240,7 @@
 			    unit->air_temperature = temp;
 			    unit->air_state = 0;
 			} else {
-			    syslog(LOG_NOTICE, "deviation error deviation=%d, old=%d new=%d", deviation, unit->air_temperature, temp);
+			    syslog(LOG_NOTICE, "deviation error air deviation=%d, old=%d new=%d", deviation, unit->air_temperature, temp);
 			}
 		    } else if (rc == DEVPRESENT_ERROR) {
 			unit->air_state = 1;
@@ -1262,7 +1262,7 @@
     			    unit->beer_temperature = temp;
 			    unit->beer_state = 0;
 			} else {
-			    syslog(LOG_NOTICE, "deviation error deviation=%d, old=%d new=%d", deviation, unit->beer_temperature, temp);
+			    syslog(LOG_NOTICE, "deviation error beer deviation=%d, old=%d new=%d", deviation, unit->beer_temperature, temp);
 			}
 		    } else if (rc == DEVPRESENT_ERROR) {
 			unit->beer_state = 1;
@@ -1271,6 +1271,28 @@
 		    }
 		}
 
+		if (unit->chiller_address) {
+		    rc = device_in(unit->chiller_address, &temp);
+		    if (rc == DEVPRESENT_YES) {
+			deviation = 40000;
+			if ((unit->chiller_temperature == 0) ||
+			    (unit->chiller_temperature && (temp > (int)unit->chiller_temperature - deviation) && (temp < ((int)unit->chiller_temperature + deviation)))) {
+			    if (unit->chiller_temperature != temp) {
+				unit->mqtt_flag |= MQTT_FLAG_DATA;
+				pub_domoticz_temp(unit->chiller_idx, temp);
+			    }
+			    unit->chiller_temperature = temp;
+			    unit->chiller_state = 0;
+			} else {
+			    syslog(LOG_NOTICE, "deviation error chiller deviation=%d, old=%d new=%d", deviation, unit->chiller_temperature, temp);
+			}
+		    } else if (rc == DEVPRESENT_ERROR) {
+			unit->chiller_state = 1;
+		    } else {
+			unit->chiller_state = 2;
+		    }
+		}
+
 		/*
 		 * Unit door state, default is closed.
 		 */
@@ -1629,6 +1651,14 @@
 			if ((unit->mode == UNITMODE_BEER) && ((unit->air_temperature / 1000.0) < (unit->PID_cool->Input - 5.0))) {
 			    unit->PID_cool->OutP = 0.0;
 			}
+			/*
+			 * Prevent cooling if we use a chiller and the chiller temperature is not low enough.
+			 */
+			if (unit->chiller_address && (unit->chiller_state == 0)) {
+			    if ((unit->chiller_temperature / 1000.0) > (unit->PID_cool->Input - 1)) {
+			    	unit->PID_cool->OutP = 0.0;
+			    }
+			}
 		    	if (debug)
 			    fprintf(stdout, "Cool: sp=%.2f Input=%.2f iState=%.2f Err=%.2f Out=%.2f\n",
 				unit->PID_cool->SetP, unit->PID_cool->Input, unit->PID_cool->iState, unit->PID_cool->Err, unit->PID_cool->OutP);