I was having problems with my suzuki alto vxr ac. The compressor was not starting sometimes.all else was good and cooling was good too. He said it seems like compressor coil issue. He replaced it still no good. Then he diagnosed it to card issue that is placed under the dashboard. Few days later same issue. The compressor would sometime not start.
I went again and this time he installed a thermostat inside the passenger side dashboard which was previously not there at all. I asked him why he did not give a reason. Now it works fine but the tick tick sound of the thermostat is really annoying.
My question is why did he install it and what could be the possible causes of compressor not starting.
Here is how the thermostat looks like that he installed under the dash:
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