diff --git a/lib/HanReader/src/DlmsReader.cpp b/lib/HanReader/src/DlmsReader.cpp
index cce664b4..aaa44557 100644
--- a/lib/HanReader/src/DlmsReader.cpp
+++ b/lib/HanReader/src/DlmsReader.cpp
@@ -14,7 +14,7 @@ void DlmsReader::Clear()
     this->frameFormatType = 0;
 }
 
-bool DlmsReader::Read(byte data)
+bool DlmsReader::Read(byte data, Print* debugger)
 {
     if (position == 0 && data != 0x7E)
     {
@@ -24,12 +24,21 @@ bool DlmsReader::Read(byte data)
     else
     {
         // We have completed reading of one package, so clear and be ready for the next
-        if (dataLength > 0 && position >= dataLength + 2)
+        if (dataLength > 0 && position >= dataLength + 2) {
+            if(debugger != NULL) {
+                debugger->printf("Preparing for next frame\n");
+            }
             Clear();
+        }
         
         // Check if we're about to run into a buffer overflow
-        if (position >= DLMS_READER_BUFFER_SIZE)
+        if (position >= DLMS_READER_BUFFER_SIZE) {
+            if(debugger != NULL) {
+                debugger->printf("Buffer overflow\n");
+                debugPrint(buffer, 0, position, debugger);
+            }
             Clear();
+        }
 
         // Check if this is a second start flag, which indicates the previous one was a stop from the last package
         if (position == 1 && data == 0x7E)
@@ -50,8 +59,13 @@ bool DlmsReader::Read(byte data)
         {
             // Capture the Frame Format Type
             frameFormatType = (byte)(data & 0xF0);
-            if (!IsValidFrameFormat(frameFormatType))
+            if (!IsValidFrameFormat(frameFormatType)) {
+                if(debugger != NULL) {
+                    debugger->printf("Incorrect frame format %02X\n", frameFormatType);
+                    debugPrint(buffer, 0, position, debugger);
+                }
                 Clear();
+            }
             return false;
         }
         else if (position == 3)
@@ -64,32 +78,52 @@ bool DlmsReader::Read(byte data)
         {
             // Capture the destination address
             destinationAddressLength = GetAddress(3, destinationAddress, 0, DLMS_READER_MAX_ADDRESS_SIZE);
-            if (destinationAddressLength > 3)
+            if (destinationAddressLength > 3) {
+                if(debugger != NULL) {
+                    debugger->printf("Destination address length incorrect\n");
+                    debugPrint(buffer, 0, position, debugger);
+                }
                 Clear();
+            }
             return false;
         }
         else if (sourceAddressLength == 0)
         {
             // Capture the source address
             sourceAddressLength = GetAddress(3 + destinationAddressLength, sourceAddress, 0, DLMS_READER_MAX_ADDRESS_SIZE);
-            if (sourceAddressLength > 3)
+            if (sourceAddressLength > 3) {
+                if(debugger != NULL) {
+                    debugger->printf("Source address length incorrect\n");
+                    debugPrint(buffer, 0, position, debugger);
+                }
                 Clear();
+            }
             return false;
         }
         else if (position == 4 + destinationAddressLength + sourceAddressLength + 2)
         {
             // Verify the header checksum
             ushort headerChecksum = GetChecksum(position - 3);
-            if (headerChecksum != Crc16.ComputeChecksum(buffer, 1, position - 3))
+            if (headerChecksum != Crc16.ComputeChecksum(buffer, 1, position - 3)) {
+                if(debugger != NULL) {
+                    debugger->printf("Header checksum is incorrect %02X\n", headerChecksum);
+                    debugPrint(buffer, 0, position, debugger);
+                }
                 Clear();
+            }
             return false;
         }
         else if (position == dataLength + 1)
         {
             // Verify the data package checksum
             ushort checksum = this->GetChecksum(position - 3);
-            if (checksum != Crc16.ComputeChecksum(buffer, 1, position - 3))
+            if (checksum != Crc16.ComputeChecksum(buffer, 1, position - 3)) {
+                if(debugger != NULL) {
+                    debugger->printf("Frame checksum is incorrect %02X\n", checksum);
+                    debugPrint(buffer, 0, position, debugger);
+                }
                 Clear();
+            }
             return false;
         }
         else if (position == dataLength + 2)
@@ -99,6 +133,10 @@ bool DlmsReader::Read(byte data)
                 return true;
             else
             {
+                if(debugger != NULL) {
+                    debugger->printf("Received incorrect end marker %02X\n", data);
+                    debugPrint(buffer, 0, position, debugger);
+                }
                 Clear();
                 return false;
             }
@@ -152,3 +190,19 @@ ushort DlmsReader::GetChecksum(int checksumPosition)
     return (ushort)(buffer[checksumPosition + 2] << 8 |
         buffer[checksumPosition + 1]);
 }
+
+void DlmsReader::debugPrint(byte *buffer, int start, int length, Print* debugger) {
+	for (int i = start; i < start + length; i++) {
+		if (buffer[i] < 0x10)
+			debugger->print("0");
+		debugger->print(buffer[i], HEX);
+		debugger->print(" ");
+		if ((i - start + 1) % 16 == 0)
+			debugger->println("");
+		else if ((i - start + 1) % 4 == 0)
+			debugger->print(" ");
+
+		yield(); // Let other get some resources too
+	}
+	debugger->println("");
+}
diff --git a/lib/HanReader/src/DlmsReader.h b/lib/HanReader/src/DlmsReader.h
index ffc8691b..d82eb4a1 100644
--- a/lib/HanReader/src/DlmsReader.h
+++ b/lib/HanReader/src/DlmsReader.h
@@ -16,7 +16,7 @@ class DlmsReader
 {
   public:
     DlmsReader();
-    bool Read(byte data);
+    bool Read(byte data, Print* Debug);
     int GetRawData(byte *buffer, int start, int length);
     
   protected:
@@ -37,6 +37,7 @@ class DlmsReader
     unsigned short GetChecksum(int checksumPosition);
     bool IsValidFrameFormat(byte frameFormatType);
     void WriteBuffer();
+    void debugPrint(byte *buffer, int start, int length, Print* debugger);
 };
 
 #endif
diff --git a/lib/HanReader/src/HanReader.cpp b/lib/HanReader/src/HanReader.cpp
index 8eaa1d32..4d18d501 100644
--- a/lib/HanReader/src/HanReader.cpp
+++ b/lib/HanReader/src/HanReader.cpp
@@ -31,7 +31,7 @@ void HanReader::setAuthenticationKey(uint8_t* authentication_key) {
 
 
 bool HanReader::read(byte data) {
-	if (reader.Read(data)) {
+	if (reader.Read(data, debugger->isActive(RemoteDebug::DEBUG) ? debugger : NULL)) {
 		bytesRead = reader.GetRawData(buffer, 0, 512);
 		if (debugger->isActive(RemoteDebug::INFO)) {
 			printI("Got valid DLMS data (%d bytes)", bytesRead);
diff --git a/src/AmsConfiguration.cpp b/src/AmsConfiguration.cpp
index 4682ce98..508b6dcd 100644
--- a/src/AmsConfiguration.cpp
+++ b/src/AmsConfiguration.cpp
@@ -968,6 +968,7 @@ void AmsConfiguration::print(Print* debugger)
 	debugger->println("-----------------------------------------------");
 	debugger->printf("WiFi SSID:            '%s'\r\n", this->getWifiSsid());
 	debugger->printf("WiFi Psk:             '%s'\r\n", this->getWifiPassword());
+	delay(1);
 	
 	if(strlen(getWifiIp()) > 0) {
 		debugger->printf("IP:                   '%s'\r\n", this->getWifiIp());
@@ -976,6 +977,7 @@ void AmsConfiguration::print(Print* debugger)
 		debugger->printf("Primary DNS:          '%s'\r\n", this->getWifiDns1());
 		debugger->printf("Secondary DNS:        '%s'\r\n", this->getWifiDns2());
 	}
+	delay(1);
 	
 	debugger->printf("WiFi Host:            '%s'\r\n", this->getWifiHostname());
 
@@ -992,6 +994,7 @@ void AmsConfiguration::print(Print* debugger)
 		}
 		debugger->printf("payload format:       %i\r\n", this->getMqttPayloadFormat());
 	}
+	delay(1);
 
 	if (this->getAuthSecurity()) {
 		debugger->printf("WEB AUTH:\r\n");
@@ -1006,6 +1009,7 @@ void AmsConfiguration::print(Print* debugger)
 	debugger->printf("productionCapacity:   %i\r\n", this->getProductionCapacity());
 	debugger->printf("Substitute missing:   %s\r\n", this->isSubstituteMissing() ? "Yes" : "No");
 	Serial.flush();
+	delay(1);
 
 	debugger->printf("HAN pin:              %i\r\n", this->getHanPin());
 	debugger->printf("LED pin:              %i\r\n", this->getLedPin());
@@ -1017,6 +1021,7 @@ void AmsConfiguration::print(Print* debugger)
 	debugger->printf("AP pin:               %i\r\n", this->getApPin());
 	debugger->printf("Temperature pin:      %i\r\n", this->getTempSensorPin());
 	Serial.flush();
+	delay(1);
 
 	debugger->printf("Vcc pin:              %i\r\n", this->getVccPin());
 	debugger->printf("Vcc multiplier:       %f\r\n", this->getVccMultiplier());
@@ -1030,6 +1035,7 @@ void AmsConfiguration::print(Print* debugger)
 		debugger->printf("Domoticz VL3IDX:      %i\r\n", this->getDomoVL3IDX());
 		debugger->printf("Domoticz CL1IDX:      %i\r\n", this->getDomoCL1IDX());
 	}
+	delay(1);
 
 	debugger->printf("NTP:                  %s\r\n", this->isNtpEnable() ? "Yes" : "No");
 	if(this->isNtpEnable()) {
@@ -1038,6 +1044,7 @@ void AmsConfiguration::print(Print* debugger)
 		debugger->printf("NTP server:           %s\r\n", this->getNtpServer());
 		debugger->printf("NTP DHCP:             %s\r\n", this->isNtpDhcp() ? "Yes" : "No");
 	}
+	delay(1);
 	
 	debugger->printf("Temp sensor count:    %i\r\n", this->getTempSensorCount());
 
diff --git a/src/AmsToMqttBridge.ino b/src/AmsToMqttBridge.ino
index 8e3ce27d..9588a49a 100644
--- a/src/AmsToMqttBridge.ino
+++ b/src/AmsToMqttBridge.ino
@@ -122,6 +122,7 @@ void setup() {
 			config.setTempSensorPin(14);
 		#endif
 	}
+	delay(1);
 
 	hw.setLed(config.getLedPin(), config.isLedInverted());
 	hw.setLedRgb(config.getLedPinRed(), config.getLedPinGreen(), config.getLedPinBlue(), config.isLedRgbInverted());
@@ -157,6 +158,13 @@ void setup() {
 			Debug.setSerialEnabled(true);
 		#endif
 	}
+	delay(1);
+
+	uint8_t c = config.getTempSensorCount();
+	for(int i = 0; i < c; i++) {
+		TempSensorConfig* tsc = config.getTempSensorConfig(i);
+		hw.confTempSensor(tsc->address, tsc->name, tsc->common);
+	}
 
 	double vcc = hw.getVcc();
 
@@ -188,6 +196,7 @@ void setup() {
 	debugD("ESP8266 SPIFFS");
 	spiffs = SPIFFS.begin();
 #endif
+	delay(1);
 
 	if(spiffs) {
 		bool flashed = false;
@@ -244,6 +253,7 @@ void setup() {
 			return;
 		}
 	}
+	delay(1);
 
 	if(config.hasConfig()) {
 		if(Debug.isActive(RemoteDebug::INFO)) config.print(&Debug);
@@ -325,9 +335,10 @@ void loop() {
 		hw.updateTemperatures();
 		lastTemperatureRead = now;
 
+		uint8_t c = hw.getTempSensorCount();
+
 		if(strlen(config.getMqttHost()) > 0) {
 			bool anyChanged = false;
-			uint8_t c = hw.getTempSensorCount();
 			for(int i = 0; i < c; i++) {
 				bool changed = false;
 				TempSensorData* data = hw.getTempSensorData(i);
diff --git a/src/HwTools.cpp b/src/HwTools.cpp
index cb07d4d6..6dabb67a 100644
--- a/src/HwTools.cpp
+++ b/src/HwTools.cpp
@@ -97,14 +97,12 @@ bool HwTools::updateTemperatures() {
             oneWire = new OneWire(tempSensorPin);
             sensorApi = new DallasTemperature(this->oneWire);
             sensorApi->begin();
-            delay(50);
+            delay(100);
             tempSensorInit = true;
 
             DeviceAddress addr;
             sensorApi->requestTemperatures();
             int c = sensorApi->getDeviceCount();
-            //Serial.print("Sensors found: ");
-            //Serial.println(c);
             for(int i = 0; i < c; i++) {
                 bool found = false;
                 sensorApi->getAddress(addr, i);
diff --git a/src/web/AmsWebServer.cpp b/src/web/AmsWebServer.cpp
index 4862cfd7..d067c87a 100644
--- a/src/web/AmsWebServer.cpp
+++ b/src/web/AmsWebServer.cpp
@@ -135,9 +135,10 @@ void AmsWebServer::temperature() {
 
 	String html;
 	int c = hw->getTempSensorCount();
+	int num = 8;
 
 	int start = server.hasArg("start") && !server.arg("start").isEmpty() ? server.arg("start").toInt() : 0;
-	int end = min(start + 4, c);
+	int end = min(start + num, c);
 
 	for(int i = start; i < end; i++) {
 		TempSensorData* data = hw->getTempSensorData(i);
@@ -160,7 +161,7 @@ void AmsWebServer::temperature() {
 		html += "<div class=\"row\"><div class=\"col-6\">";
 		if(start > 0) {
 			html += "<a href=\"?start=";
-			html += String(start-4, DEC);
+			html += String(start-num, DEC);
 			html += "\" class=\"btn btn-sm btn-outline-secondary\">previous</a>";
 		}
 		html += "</div><div class=\"col-6 text-right\">";
diff --git a/web/index.html b/web/index.html
index 156e3456..78ce9a03 100644
--- a/web/index.html
+++ b/web/index.html
@@ -76,7 +76,7 @@
             </div>
             <div class="row" style="display: ${display.temp};">
                 <div class="col-6">Temperature</div>
-                <div class="col-6 text-right"><span id="temp">${temp}</span> °C</div>
+                <div class="col-6 text-right"><span id="temp">${temp}</span> &deg;C</div>
             </div>
             <div class="row" style="display: none;">
                 <div class="col-6">Uptime</div>