diff --git a/src/AmsConfiguration.cpp b/src/AmsConfiguration.cpp
index 212d76a7..971ccf5f 100644
--- a/src/AmsConfiguration.cpp
+++ b/src/AmsConfiguration.cpp
@@ -280,6 +280,7 @@ bool AmsConfiguration::hasConfig() {
 		case 81:
 			return true;
 		default:
+			configVersion = 0;
 			return false;
 	}
 }
@@ -362,7 +363,7 @@ bool AmsConfiguration::loadConfig72(int address) {
 
 	ackWifiChange();
 
-	setDebugLevel(5); // 5=Error
+	setDebugLevel(3); // 3=Info
 	setDebugTelnet(false);
 	setDebugSerial(false);
 
@@ -433,7 +434,7 @@ bool AmsConfiguration::loadConfig75(int address) {
 
 	ackWifiChange();
 
-	setDebugLevel(5); // 5=Error
+	setDebugLevel(3); // 3=Info
 	setDebugTelnet(false);
 	setDebugSerial(false);
 
@@ -508,7 +509,7 @@ bool AmsConfiguration::loadConfig80(int address) {
 
 	ackWifiChange();
 
-	setDebugLevel(5); // 5=Error
+	setDebugLevel(3); // 3=Info
 	setDebugTelnet(false);
 	setDebugSerial(false);
 
diff --git a/src/AmsConfiguration.h b/src/AmsConfiguration.h
index a5a43df3..c2991cb6 100644
--- a/src/AmsConfiguration.h
+++ b/src/AmsConfiguration.h
@@ -82,7 +82,7 @@ public:
 protected:
 
 private:
-	int configVersion;
+	int configVersion = 0;
 
 	String wifiSsid;
 	String wifiPassword;
@@ -92,26 +92,26 @@ private:
 	String wifiDns1;
 	String wifiDns2;
 	String wifiHostname;
-	bool wifiChanged;
+	bool wifiChanged = false;
 	
 	String mqttHost;
-	int mqttPort;
+	int mqttPort = 1883;
 	String mqttClientId;
 	String mqttPublishTopic;
 	String mqttSubscribeTopic;
 	String mqttUser;
 	String mqttPassword;
-	int mqttPayloadFormat;
-	bool mqttChanged;
+	int mqttPayloadFormat = 0;
+	bool mqttChanged = false;
 
 	byte authSecurity;
 	String authUser;
 	String authPassword;
 
-	int meterType, distributionSystem, mainFuse, productionCapacity;
+	int meterType = 0, distributionSystem = 0, mainFuse = 0, productionCapacity = 0;
 
-	bool debugTelnet, debugSerial;
-	int debugLevel;
+	bool debugTelnet = false, debugSerial = false;
+	int debugLevel = 3;
 
 	const int EEPROM_SIZE = 512;
 	const int EEPROM_CHECK_SUM = 81; // Used to check if config is stored. Change if structure changes
diff --git a/src/AmsToMqttBridge.ino b/src/AmsToMqttBridge.ino
index 35dd2262..a79cb589 100644
--- a/src/AmsToMqttBridge.ino
+++ b/src/AmsToMqttBridge.ino
@@ -60,7 +60,7 @@ void setup() {
 	if(config.hasConfig()) {
 		config.load();
 	}
-
+#if DEBUG_MODE
 #if HW_ROARFRED
 	if(config.getMeterType() == 3) {
 		Serial.begin(2400, SERIAL_8N1);
@@ -69,6 +69,7 @@ void setup() {
 	}
 #else
 	Serial.begin(115200);
+#endif
 #endif
 
 	if(config.hasConfig()) {
@@ -91,7 +92,7 @@ void setup() {
 
 	if (Debug.isActive(RemoteDebug::INFO)) {
 		debugI("AMS bridge started");
-		debugI("Voltage: %dV", vcc);
+		debugI("Voltage: %.2fV", vcc);
 	}
 
 	if (vcc > 0 && vcc < 3.1) {
@@ -171,7 +172,8 @@ void setup() {
 		}
 	}
 
-	if(config.getConfigVersion() < 81) {
+	if(!config.hasConfig() || config.getConfigVersion() < 81) {
+		debugI("Setting default hostname");
 		uint16_t chipId;
 #if defined(ARDUINO_ARCH_ESP32)
 		chipId = ESP.getEfuseMac();
@@ -548,6 +550,7 @@ void readHanPort() {
 	if(config.getMeterType() == 0 && millis() - lastSuccessfulRead > 10000) {
 		lastSuccessfulRead = millis();
 		if(Debug.isActive(RemoteDebug::DEBUG)) debugD("No data for current setting, switching parity");
+		Serial.flush();
 #if SOFTWARE_SERIAL
 			if(even) {
 				hanSerial->begin(2400, SWSERIAL_8N1);