Johnson A419 question.

[maple1]

Anybody use the BIN function? Anybody know what it means when the 'BIN' in the display is flashing? Don't see that in the manual. I swapped out a manual wall switch for a thermal switch for that function earlier today, and it was working hunkey dorey. But I just noticed the flashing. Pretty sure it wasn't before.

 

[rkusek]

have not used it but looks like that means you have closed the circuit between the BIN and COM terminals which makes the temp offset active. they suggest it could be used as night setback feature with some sort time clock output on the BIN and COM. Could be useful I suppose.

 

[maple1]

That's sort of what I was using it for. I had it wired thru a wall switch, and sometimes when starting a burn I would hit the switch which raised the setpoints to heat my 80 gallon DHW tank another 25°. So I could 'overcharge' my DHW when making the most heat (burning), which leaves my storage just for house heating. Sort of a way of increasing my storage capacity. Never noticed the flashing 'bin' before until after I did a cycle after replacing the wall switch with a thermal switch, mounted on my boiler return pipe. So it would to it automatically. Law of coincidences points to the thermal switch - wondering if it presented some resistance or something after it cycled? I checked it with a meter before hooking it up & there wasn't any, but I haven't checked it since - I just unhooked the BIN circuit for now until I find time to revisit it. Kind of weird.