TC feedback cab air-con was not working.Unable to reset. Cab was warm. ERS-14 ~~~~~ TC feedback cab air-con was not working. Check the above mention and confirm #3705 cab air con fault due to low freon.Charge freon to LP-60 & HP-220 and unit test run. Monitor for few hours and a/c able to cut in/out and no freon leakage found. Done by Saini/Haslan/Asruddin. 19/12/22