diff --git a/heat_control.py b/heat_control.py
index 0d32274..918e97e 100644
--- a/heat_control.py
+++ b/heat_control.py
@@ -116,8 +116,7 @@ def check_temperatures():
 		# turn on the pump
 		# and turn off the boiler of course
 		for c in contours:
-			# valves are normally-opened, so 0 means "open"
-			mqtt_client.publish(c.out_topic, "0", retain=True)
+			mqtt_client.publish(c.out_topic, "1", retain=True)
 		mqtt_client.publish(boiler_control, "0", retain=True)
 		mqtt_client.publish(pump_control, "1", retain=True)
 		return
@@ -133,8 +132,7 @@ def check_temperatures():
 	if count_t == 0:
 		logger.error("No temperatures available, switch to full-on mode")
 		for c in contours:
-			# valves are normally-opened, so 0 means "open"
-			mqtt_client.publish(c.out_topic, "0", retain=True)
+			mqtt_client.publish(c.out_topic, "1", retain=True)
 		# turn on boiler 
 		mqtt_client.publish(boiler_control, "1", retain=True)
 		return
@@ -155,10 +153,10 @@ def check_temperatures():
 			# should turn off contour
 			c.check_state(False)
 		if c.state:
-			# 0 means "open"
-			mqtt_client.publish(c.out_topic, "0", retain=True)
-		else:
+			# 0 means "closed"
 			mqtt_client.publish(c.out_topic, "1", retain=True)
+		else:
+			mqtt_client.publish(c.out_topic, "0", retain=True)
 
 	if any_opened:
 		any_opened = False