l8148e

mameno

my circulating pump is not working its not getting voltage from my honeywell l8148e aquastat relay there is voltage going into the 18148e is this a common failure

kcopp

it does happen.....
The circuit is closed at TT?

mameno

WHAT IS THE TT

HVACNUT

TT are the terminals in the aquastat that the thermostat wires are connected to.
Are you assuming there's no power (115v) th C1,C2, or are you checking with a meter?
You can jump the TT terminals and see if the relay closes and the pump starts.
Question, that is a high limit only aquastat, so, does the burner ignite when you raise the thermostat or jump TT?

newagedawn

and the answer was? lol homeowners

mameno

everything works the zone valves open the furnace cycles on and off just the ciculating pump doesnt work theres no power at the pump conections checking with a test light for household current

HVACNUT

The TT circuit closes from the end switches on the zone valves.
B1,B2 is energized for the burner circuit.
No power at C1,C2.
You need a new aquastat.

If you don't have a low water cutoff on the boiler, look into an aquastat for gas like the Hydrostat or Aquasmart with a built-in LWCO. You'll have to change the well also.
Cost is compatible.

GW

Yes we have that control on our service truck for that very reason, they do croak