Geeetech

heat bed temp in Repetier-Host indicates much higher than actual heatbed temperature of mini G2
At room temperature actual heat reading on bed is 22 C but host indicates 98C.
line 178 of Configuration.h file is #define TEMP_SENSOR_BED 1 . Is this correct?
If not what is correct sensor bed number?
If correct what is probable cause?

Hi ,LENNS .
1) you can check the specific settings in your firmware of temperature.h,here are some examples:
//===========================================================================
//============================= ThermalSettings ============================
//===========================================================================
//
//--NORMAL IS 4.7kohm PULLUP!-- 1kohmpullup can be used on hotend sensor, using correct resistor and table
//
//// Temperature sensor settings:
// -2 is thermocouple with MAX6675 (onlyfor sensor 0)
// -1 is thermocouple with AD595
// 0 is not used
// 1 is 100k thermistor - best choice forEPCOS 100k (4.7k pullup)
// 2 is 200k thermistor - ATC Semitec204GT-2 (4.7k pullup)
// 3 is Mendel-parts thermistor (4.7kpullup)

so ,acccording to your thermistor type,you can see which is right for you .

2) you can swap your heat bed tempreature sensor with the hot end sensor to check if the sensor dead or not .

3)another way to test is break or short your sensor circut ,if is 0 or 385℃，then the sensor is OK.

The sensor is working but giving wrong values.

You said
"so ,acccording to your thermistor type,you can see which is right for you"

It is presently set at 1 which is obviously wrong. How do I know what is right for me?
I do not know what thermistor type is in heatbed. I thought you would know.
Can you simply not tell me which is correct value for sensor in this heatbed?

According to the sensor type ,I found the value is 1,right. So could you swap it with the hotend sensor,maybe the sensor has a problem,or maybe the sensor is not connected well.