Hi, we have done a few Cbus jobs over the years but having a bit of trouble fault finding one fairly large site. \nThe issue is random loads coming on. They all seemed to be unique to one particular dimmer so we swapped it out for a relay but alas, two days later the fault occurs again. \nAll the modules with power supplies seem to test fine and I believe it could be one faulty product causing this. Voltages are all good. Burden and clocks fine. All devices scan well and quickly in toolkit. \nWithout removing every sensor or switch one at a time and leaving it for a few days, can anyone suggest a quicker way of isolating a possible faulty product? The fault is not like any scene programmed on the job and the only main programming product is a PACA. Any fault finding suggestion to assist with random groups just suddenly coming on would be appreciated.