TC reported cab air-con not working. ~~~~~ 3526 cab A/c FAULT LED lighted. Swopped 3526 cab distibution box to 3525 & fault transferred. 3526 cab A/c operation - OK. Temp. at 24'C.  Hanafi/Chan SW. 03/04/2020.  3525 cab A/C distribution boxreplaced - Done.    Function test - OK.  Chan GF/Alan. 03/04/2020.