If that general control and approach are in use on your system and if your system is hooked up in the manner typically used in the U.S. (not in Canada) the circulator won't turn on until the temperature is sufficiently high in the boiler. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. To prime a water pump, start by turning off electrical power to the pump and opening any relief valves on the system. circulator pump goes on when heat called, runs thru cycle, but doesn't come again.....burners come on,but not circulator which in turn system goes off. In order to draw water up from your well, an above-ground well pump must first be primed. Any information would be helpful. What is the SQ and SQE? If I go to high speed the pump runs fine and I can drop back to low speed and it usually will run fine. Then, insert a hose into the plumbing fixture and turn it on so the tank in the pump starts filling up. WATER PUMP GOALS FOR THE OFF GRID HOME #1 Obviously we are trying to find a pump that will do the job but use the least amount of electricity. to $300. Never had any issues with the Monsoon until recently, worked seamlessly for 15 years providing hot and cold water … Check that the boiler temperature is above the circulator cut-in temperature controlled by the aquastat. Run a supply of cold water through the pump, if the unit does not start due to overheating. It's ran off the water heater and water heater is working proper. InspectAPedia tolerates no conflicts of interest. In answer to your cost question, Grundfoss & Bell & Gossett heating zone circulator pumps are typically in the range of $100. You can actually see the link spinning. Second, check the overload protection by checking the circuit breakers and third, check if the pressure switch is damaged. Some circulator pumps make enough noise and vibration that it's obvious if the pump is running. The low speed on the pump won't start, just hums. When the circulator relay is switching on 120VAC to the circulator pump itself we should see 120VAC at the power terminals at the circulator pump. Check that the circulator pump itself runs and is not damaged, jammed, frozen - how to tell if the circulator is running - below we give seven ways to test a circulator pump to see if it's running and if it's pumping. 4. $( "#local-search-error" ).hide(); Secondly check there is resistance on both valves when you slide the lever (with the timer off on both CH and HW) no rresistance could indicate a stuck motor. Some old timers push down on the circulator relay - if it clicks on (and the pump runs) then the relay was not being pulled in by the thermostat (switch) OR the relay itself has failed. $("#local-search-form").submit(); Watch out: exposing or touching live electrical wiring connections can shock or kill you. #1 I have a Grundfos Ups2 15-50/60 pump, approx 2 years old (still under warranty) which does not start when the system is cold or has not been calling for heat for a while, eg. Burner turms on zones open everythong but pump. If the circulator pump runs and the boiler is hot but the radiators or baseboards do not get hot the system may be air-bound: See COLD HOT WATER BASEBOARD / RADIATOR, On 2020-10-21 by (mod) - Taco 1910e Circulator Over Current Error Code diagnosis, Include the possibility of a failing or seizing rotor bearing or motor bearing, debris in an impeller assembly - clogging low voltage supply, pump cavitation (air in the heating system and piping, and possibly an unusually high head pressure on the system for example if you are trying to circulate to an altitude or height above what the manufacturer permits. If you do not know how to make these tests safely don't try it: call for help from a trained professional. EG: Obstructed outlet or inlet piping: "It is recommended that the1900e series pumps be installed with at least 5 to 10 pipe diameters of straight pipe on the inlet and outlet of the pump. " where you'll see that the temperature has to be above the LO setting for circulator to run. Ask us about it! Pump should be operated under flooded suction only: Pump not primed: Prime pump - Make certain inlet pipe is drawn up tight and pump and pipe are full of water: Incorrect rotation, motor running backwards: Reverse motor rotation can occur on three phase units. The power company should be consulted if there is no power to the box. CGM-5-PI. It should be easy to diagnose this problem by bypassing the aquastat's circulator relay - by jumping the circulator proper terminals. If the circulator pump has power but the pump is not spinning then there is an internal problem in the circulator pump or pump motor or its impelller. Once it starts to deliver water, the pump will change over to normal operation (start/stop). The circulator pump did not start to opereate until the boiler temp read 150 degrees. Late in 2015 we had trouble with three UPS2 15-50/60 pumps which were all only a few months old and had similar faults. 5 litres of water into the pump through the priming port, see the installa- tion and operating instructions. Once you notice water coming out of the opposite end, turn off the hose and restore power to the pump. Could it be the transformer that has gone bad? Check the circulator relay - it should be turning on the pump; Check the thermostat terminals at the circulator relay - jumping those should turn on the pump.Check for shorted or disconnected thermostat wires.Watch out: the pump may be running fine and the problem could be an air-bound heating zone.Please see diagnostic details at CIRCULATOR OPERATION CHECKS. ensuring the correct phase sequence delivers maximum performance. Check the circulator relay has power and is switched "in" or callling for the circulator to run. Some circulator pump models such as the older B&G red circulator pumps actually have exposed linkages between the electric motor and the circulator impeller assembly. Continue reading at CIRCULATOR OPERATION CHECKS or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. Inspect the electrical box for blown fuses and tripped breakers. We also provide a MASTER INDEX to this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. The issue I think is that the boiler is not activating the pump so it may be an electrical issue. Helpful. Reprime pump. I bled the radiators, oiled the circulator pump and turned up the thermastat in order to check the operation. event.preventDefault(); Grundfos is pumping the entire home (about 40 feet up from the basement at the highest point - I have some loops/manifolds in the attic). Fuses and tripped breakers visible debris from the closely-related articles below, see! 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