I need someone to refresh my memory. At sometime in the past year, I believe Bert came up with a fix to make the Cabin Teperature Display actually appear to function, at least when the cabin temp knob was incresed or decresed. I am running Berr's panel mod so I should have it. Looking in his GAUGEPC12 folder (as installed) I found the file Gauge_AIR_TEMPV4.xml. It contained:

<?xml version="1.0" encoding="UTF-8"?>

<SimBase.Document
        Type="AceXML"
        version="1,0"
        id="Gauge_AIR_TEMP">
    <Descr>AceXML Document</Descr>
    <Filename>Gauge_AIR_TEMP.xml</Filename>
    <SimGauge.Gauge id="Gauge_AIR_TEMP" ArtDirectory=".">
        <FloatPosition>0.000,0.000</FloatPosition>
        <Size>384,187</Size>
        <Image id="Gauge_AIR_TEMP" Name="Gauge_AIR_TEMP_BGNOP">
            <Transparent>True</Transparent>
        </Image>

<Update> <frequency>2</frequency> <Script>

(L:ASD_BTN_PC12_HEATING_CABIN,number) 0 &gt; (A:GENERAL ENG1 OIL TEMPERATURE, celsius) 60 &gt; or (A:ELECTRICAL MASTER BATTERY,BOOL) and if{

(L:ASD_KNOB_CABIN_TEMP,number) 10 / 18 + (>L:cabin temperature,number) }

els{ (A:AMBIENT TEMPERATURE, celsius) (>L:cabin temperature,number) }

</Script> </Update>

<Element id="VIS_GAUGE_AIR_TEMP">
   <Visibility>(A:ELECTRICAL MASTER BATTERY,BOOL)</Visibility>
         

<Element id="AIR_TEMP">
            <FloatPosition>100.000,60.000</FloatPosition>
            <Visibility>(A:CIRCUIT GENERAL PANEL ON, bool)</Visibility>
            <GaugeText id="AIR_TEMPT">
                <Bright>True</Bright>
                <FontColor>0x005AFF</FontColor>
                <FontFace>LCD_MONO</FontFace>
                <FontHeight>70</FontHeight>
                <GaugeString>%((L:cabin temperature,number))%!3d!</GaugeString>
                <HorizontalAlign>RIGHT</HorizontalAlign>
                <Size>150,70</Size>
                <Transparent>True</Transparent>
            </GaugeText>
        </Element>

</Element>  
         
       
          
  
 </SimGauge.Gauge>
</SimBase.Document>
 

As far as I can observe, the cabin temp value stays at 23 degrees C. I've tried the ECS switch in Auto and Manual positions. I've turned the heater on in the overhead panel. I've selected HOT and COLD on the switch next to the ECS control. I've rotated the knob in both directions. No change in reading. Is there a particular combination of switches that must be set in order for the Cabin temp value to change? 23C is a warm temp to have on the ramp in the middle of the winter.

Does not sound like my mods are operational.. are you sure you are running the V57 panel?

If it says:  "23 C" , I can pretty much tell you are not , since I removed the "C" in the display as per the PC12 Operations Manual..

I must have mixed up the original install. After substituting the new Panel folder Bert sent me, it looks like the Cabin Heat readout is working.