diff -r d694abd9d809 -r 7032693272f1 thermferm/rdconfig.c
--- a/thermferm/rdconfig.c	Thu Feb 07 14:59:47 2019 +0100
+++ b/thermferm/rdconfig.c	Wed Feb 27 17:38:06 2019 +0100
@@ -328,6 +328,8 @@
 	    xmlTextWriterWriteFormatElement(writer, BAD_CAST "FRIDGE_SET_HI", "%.1f", tmp3->fridge_set_hi);
 	    xmlTextWriterWriteFormatElement(writer, BAD_CAST "TEMP_SET_MIN", "%.1f", tmp3->temp_set_min);
 	    xmlTextWriterWriteFormatElement(writer, BAD_CAST "TEMP_SET_MAX", "%.1f", tmp3->temp_set_max);
+	    xmlTextWriterWriteFormatElement(writer, BAD_CAST "YEAST_LO", "%.1f", tmp3->yeast_lo);
+	    xmlTextWriterWriteFormatElement(writer, BAD_CAST "YEAST_HI", "%.1f", tmp3->yeast_hi);
 
 	    if (tmp3->profile_uuid) {
 		xmlTextWriterWriteFormatElement(writer, BAD_CAST "PROFILE_UUID", "%s", tmp3->profile_uuid);
@@ -586,6 +588,8 @@
     unit->heater_usage = unit->cooler_usage = unit->fan_usage = unit->light_usage = 0;
     unit->temp_set_min = 1.0;
     unit->temp_set_max = 30.0;
+    unit->yeast_lo = 12.0;
+    unit->yeast_hi = 24.0;
     unit->prof_started = unit->prof_paused = unit->prof_primary_done = (time_t)0;
     unit->prof_percent = 0;
     unit->PID_cool = (pid_var *)malloc(sizeof(pid_var));
@@ -849,24 +853,18 @@
 		unit->temp_set_max = val;
 	    xmlFree(key);
 	}
-//	if ((!xmlStrcmp(cur->name, (const xmlChar *)"PID_KP"))) {
-//	    key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
-//	    if (sscanf((const char *)key, "%f", &val) == 1)
-//		unit->PID_cool->pGain = unit->PID_heat->pGain = val;	/* Upgrade config	*/
-//	    xmlFree(key);
-//	}
-//	if ((!xmlStrcmp(cur->name, (const xmlChar *)"PID_KD"))) {
-//	    key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
-//	    if (sscanf((const char *)key, "%f", &val) == 1)
-//		unit->PID_cool->dGain = unit->PID_heat->dGain = val;	/* Upgrade config       */
-//	    xmlFree(key);
-//	}
-//	if ((!xmlStrcmp(cur->name, (const xmlChar *)"PID_KI"))) {
-//	    key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
-//	    if (sscanf((const char *)key, "%f", &val) == 1)
-//		unit->PID_cool->iGain = unit->PID_heat->iGain = val;	/* Upgrade config       */
-//	    xmlFree(key);
-//	}
+	if ((!xmlStrcmp(cur->name, (const xmlChar *)"YEAST_LO"))) {
+	    key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
+	    if (sscanf((const char *)key, "%f", &val) == 1)
+		unit->yeast_lo = val;
+	    xmlFree(key);
+	}
+	if ((!xmlStrcmp(cur->name, (const xmlChar *)"YEAST_HI"))) {
+	    key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
+	    if (sscanf((const char *)key, "%f", &val) == 1)
+		unit->yeast_hi = val;
+	    xmlFree(key);
+	}
 	if ((!xmlStrcmp(cur->name, (const xmlChar *)"PIDC_IMAX"))) {
 	    key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
 	    if (sscanf((const char *)key, "%f", &val) == 1)