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Does Wood Boiler Pump Run All The Time. The thermostat wires come into the honeywell aquastat. Disconnecting either of the 2 thermostat wires in the aquastat stopped the circulator pump from running.
The tech when he cleaned the boiler had placed a pencil at times behind a switch in the aquastat to force the furnace to run. Pressing the reset button had no effect. The boiler tripped out last night when i had it on the 24 hour setting to heat some water up.
The pump does not run 24/7, but appears to run all the time that the programmer is between it's on and off setting for the hot water. However, we don't know whether your boiler is designed to maintain a minimum core temperature or not. He thinks it probably is a wiring fault.
He said this should be switched by the programmer/valves. Pressing the reset button had no effect. The boiler tripped out last night when i had it on the 24 hour setting to heat some water up.
The motorized valves appear to both be operating correctly. The tech when he cleaned the boiler had placed a pencil at times behind a switch in the aquastat to force the furnace to run. He said that there was 240v permamntly on the live return to the boiler and this would make the boiler pump run all the time.
Disconnecting either of the 2 thermostat wires in the aquastat stopped the circulator pump from running. I turned off the temperature control and programmer but the pump continued to run. Does this help answer your question?
