Bobcat T190 M6904 Error Code
M6904 Error Code
DCU No Communication is the main cause of M6904 error.To solve M6904 locate and open the low-pressure valve, then attach the refrigerant to the valve and charge from there. Ensure you use the right refrigerant type and amount, as specified by a manufacturer. It is possible to overcharge the AC, so consider seeking help from a mechanic.
Tip For T190 Model
This machine is factory equipped with a spark
arrester exhaust system.
The spark arrester muffler, if equipped, must be
cleaned to keep it in working condition. The spark
arrester muffler must be serviced by dumping the
spark chamber every 100 hours of operation.
On some models, the turbocharger functions as the
spark arrester and must operate correctly for proper
spark arrester function.