But if I jump the TT in the Hydrostat the boiler fires up!?
I replaced the zone valve motor, checked all the low voltage wire nut connections(also soldered them), I have 24V at the transformer, the thermostat is working -every thing is fine for 2 to 3 days then the same problem again. I'm perplexed!
This is my third call to this unit for this same problem. Any help would be a blessing!
6 month old Biasi boiler with a NX burner, Hydrostat 3250-plus, Taco cirulator and zone valve.
I replaced the zone valve motor, checked all the low voltage wire nut connections(also soldered them), I have 24V at the transformer, the thermostat is working -every thing is fine for 2 to 3 days then the same problem again. I'm perplexed!
This is my third call to this unit for this same problem. Any help would be a blessing!
6 month old Biasi boiler with a NX burner, Hydrostat 3250-plus, Taco cirulator and zone valve.