Briggs & Stratton

[Lembro6]

Module opens both poles.
No communication to transfer switch unless it be line carrier.
No observed connection issue other than loose in range. 1/4+ turns fixed all three. No overheating.

The modules communicate with the transfer switch with the neutral. Each module must me numbered in sequence of preference to be turned on between 1 and up to 8. If it is on 9 then it will be locked out during an outage. The modules monitor if there is enough power from the generator to turn the large appliance on. It starts at 1 and then 2 and so on. If a larger appliance turns off, say the oven, then another larger appliance can turn on. All of this is done in 5 minute increments. To me it looks like a range circuit board issue. You can bypass the module if need be. I've done it before waiting on a replacement module.

 

[kwired]

The modules communicate with the transfer switch with the neutral. Each module must me numbered in sequence of preference to be turned on between 1 and up to 8. If it is on 9 then it will be locked out during an outage. The modules monitor if there is enough power from the generator to turn the large appliance on. It starts at 1 and then 2 and so on. If a larger appliance turns off, say the oven, then another larger appliance can turn on. All of this is done in 5 minute increments. To me it looks like a range circuit board issue. You can bypass the module if need be. I've done it before waiting on a replacement module.

Yes most these out there have a priority order for switching the modules or you can set the priority, but they generally are triggered by drop in frequency, and not directly by current. Because of higher loading the prime mover slows down therefore frequency also drops.

Frequency drops, priority module 1 switches, the system doesn't know if load 1 is active or not, if not frequency isn't going to rise after module 1 switches, then module 2 will switch whenever pre-determined timing and or frequency level is reached, this will keep going until hopefully frequency rises to acceptable level. Eventually it will try to turn those loads back on - if the frequency is high enough they will stay on until it drops enough to start turning them off again.