If you need to find a tradesperson to get your job done, please try our local search below, and the grundfos picks up from there via closely spaced tees in its own loop. Diag the pump fried replaced with new still doesnt cycle. The low speed on the pump won't start, just hums. I've replaced the taco pump, both relay switches and thermostat on my hydronic heating system. If the circulator pump won't start when the boiler temperature is sufficently high that it should, you would check the following: 1. The ability for self-priming pumps to prime hinges on all the right conditions. 2. 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. The pump must be able to evacuate air from inside the pump, create a low pressure area at the eye of the impeller, and also be properly sized for the right NPSH conditions. At that point if the wires to the pump are not seeing 120 volts then the problem is most likely not the circulator but instead the circulator relay control. Then go to the ‘Documents’ tab and download the Installation & Operating Instructions. It should be easy to diagnose this problem by bypassing the aquastat's circulator relay - by jumping the circulator proper terminals. incorrectly connected phases cause rotation in the wrong direction which reduces perfor- mance and leads to … See CIRCULATOR PUMP RELAYS & OTHER CONTROLS for details. Operation 4.1 Priming Before initial start-up, pour approx. 3. This article series describes how to diagnose & fix circulator pump problems on hot water or hydronic heating systems. Since this is the main pump, it faults when the heat cycle kicks in when idle since pump only hums and doesn't run. Heating, Ventilating, and Air Conditioning Volume I, Heating Fundamentals, Boilers, Boiler Conversions, James E. Brumbaugh, ISBN 0-672-23389-4 (v. 1) Volume II, Oil, Gas, and Coal Burners, Controls, Ducts, Piping, Valves, James E. Brumbaugh, ISBN 0-672-23390-7 (v. 2) Volume III, Radiant Heating, Water Heaters, Ventilation, Air Conditioning, Heat Pumps, Air Cleaners, James E. Brumbaugh, ISBN 0-672-23383-5 (v. 3) or ISBN 0-672-23380-0 (set) Special Sales Director, Macmillan Publishing Co., 866 Third Ave., New York, NY 10022. Choose your product from the list of options. Try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly. Note: appearance of your Comment below may be delayed: if your comment contains an image, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. There is no overload protection Installation and Operation Instructions, Raytherm Residential Boilers, HOME INSPECTION EDUCATION COURESES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES, "Instruction Manual, Bell & Gossett Series LR Circulators" P86101D, Mayu 2012, Xylem Inc. 8200 N. Austin Avenue Morton Grove, Illinois 60053 Phone: (847) 966-3700 Fax: (847) 965-8379 www.xyleminc.com/brands/bellgossett, Bell & Gossett Air Separators and other heating system components, 8200 N. Austin Ave., Morton Grove IL 60053, USA - Tel 847 966-3700 Fax 847 965-8379 . The controller ensures that the pump starts automatically when water is consumed and stops automatically when the consumption ceases. Then, insert a hose into the plumbing fixture and turn it on so the tank in the pump starts filling up. or if you are doing it yourself you can find suppliers local to you. Replacing the faulty part is usually the cure. We have therefore ch… Steve, on a very common hot water heating system installation the aquastat is a combination control that includes a HI LO and DIFF setting - the LO and DIFF settings control the boiler when no heat is being called for and maintain heat in the boiler to provide domestic hot water through a tankless coil - that might not even be present or not in use on some installations. As a renowned pump manufacturer, Grundfos delivers efficient, reliable, and sustainable solutions all over the globe. I bleed all the valves on all the radiators. Priming involves filling the drop pipe with water. What is the SQ and SQE? Step into our world. 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. If you do not know how to make these tests safely don't try it: call for help from a trained professional. ensuring the correct phase sequence delivers maximum performance. Air separators are discussed by B&G at http://www.bellgossett.com/homeowners/BG-airseparator.asp, Taco air scoops and other heating system components & controls: Taco Inc., 1160 Cranston Street, Cranston, RI 02920 / (401) 942-8000 / Fax (401) 942-2360 Taco (Canada) Ltd., 6180 Ordan Drive, Mississauga, Ontario L5T 2B3 / (905) 564-9422 / Fax (905) 564-9436 www.taco-hvac.com. 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. Take a look at the boiler temperature on the gauge on the boiler and take a look. Thanks. The radiators do heat up. 5 litres of water into the pump through the priming port, see the installa- tion and operating instructions. If there is no voltage at the control panel, check the feeder panel for tripped circuits and reset those circuits. Install a compound pressure gauge at the suction side of the pump. }); (You must log in or sign up to reply here.). The full range supplier of pumps and pump solutions. 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 two upper levels get heat on the radiators, but the one on the entrance level is not getting heat. $("#local-search-location").val($("#local-search-location-req").val()); Submersible pump won't start: Problem Check Correct; Power is not supplied to the submersible pump: Place a voltmeter across power lines coming into the submersible pump to check the power supply for the overload protection box. Grundfos pumps offer the pinnacle of reliability and performance for a large variety of water circulation applications. There will be a relay switch either in the aquastat on your boiler or one or more additional circulator relays controlling additional circulator pumps if there is more than one circulator pump. Check that the thermostat is calling for heat and the room temperature is below the thermostat set temperature. If we suspect that the thermostat is not working we disconnect the two T T wires at the relay or aquastat, then jump the two T T terminals together. Once it starts to deliver water, the pump will change over to normal operation (start/stop). or Improper mounting with control module "down" - that permits water to leak into the electrical components of the circulator, Less common: wiring run too long for wire size & circuit ampacity - voltage drop; For readers needing the IO Manual for this circulator pump, See TACO 1900E ECM HIGH EFFICIENCY CIRCULATOR MANUAL [PDF] including the Taco 1915E, Also see the diagnostics at ELECTRIC MOTOR OVERHEATS inspectapedia.com/electric/Electric-Motor-Overheating.php. Inspect the electrical box for blown fuses and tripped breakers. where you'll see that the temperature has to be above the LO setting for circulator to run. Click to Show or Hide Citations & References, TACO 1900E ECM HIGH EFFICIENCY CIRCULATOR MANUAL, BELL & GOSSETT B&G EQUIPMENT MANUALS & CONTACT. If I go to high speed the pump runs fine and I can drop back to low speed and it usually will run fine. Grundfos also produce the Alpha 2L 15.50 and Alpha 2L 15.60 pumps. First set the room thermostat all the way "up" so we know it's set above the room temperature. 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 thermostat wires act as a simple "on-off" switch, connecting to the circultor relay in the aquastat or in the separate circulator relay. 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. Rig up everything pump did not start pulled out the pump double checked everything up to the bottom connectors continuity and live volts everything it is there but motor won’t start. Check the circulator relay has power and is switched "in" or callling for the circulator to run. I have a Weil-McLain furnace/boiler model no. If the submersible well pump won’t start, there could be one of three things wrong. (Otherwise it's locked out on most systems). The circulator pump did not start to opereate until the boiler temp read 150 degrees. How much would it cost to replace the circulatory pump? Thirdly if the valves are on plugs try unplugging each valve in turn and seeing if the pump cuts … - using a DMM or VOM one can check that right at the transformer; Take care not to touch live voltage - you can be shocked or worse. If you follow the circulator wires back you will find them connecting to the circulator relay. #2 Our second concern is to limit the surge of electricity required when the pump starts if you have a small to medium sized inverter. If you do not know how to make these tests safely don't try it: call for help from a trained professional. Amazon – 1m min Helpful. 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. Why can't we just build a 3" stainless steel product similar to the Grundfos SPA? Check that the boiler temperature is above the circulator cut-in temperature controlled by the aquastat. When this happens it may just be a pressure or float switch that is faulty or the pressure controller unit on top of the pump. 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. " I have the correct volts and have no aquastat connected, DhireshSure. I connected it directly to a power outlet and the pump is working. measuring voltage leakage to the ground on start-up protects against ground failure/insulation resistance before start-up. When water is required, the pump automatically starts. Turn the pump off, close the isolation valve(s), and remove the priming plug. CGM-5-PI. Preventive mainte- nance may be required. Watch out: it is difficult to tell if some other circulator pumps are actually running: a TACO brand circulator is often virtually silent - even feeling its vibration can be tough. CORRECT THIS BY... No power at the motor Check for voltage at the control box or panel. Uncommon: improper pump installation or mounting position. I have a super hot mini gas boiler after a power outage the furnace wont work properly the unit turns on no circulation. 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. 6. 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. Step 1. } Watch out: exposing or touching live electrical wiring connections can shock or kill you. }); If the pump doesn’t come on, check that the circuit breaker or ground fault circuit interrupter for your pump hasn’t tripped off. It makes a clicking noise every few seconds, then the boiler overheats, boiler thermostat cuts out and air travels around the system. WHAT GOES WRONG WITH HEATING CIRCULATORS? If the circulator pump won't start when the boiler temperature is sufficently high that it should, you would check the following: 1. The pump is hooked up to an aquastat (the thermastat located against the pipe exiting the boiler) which is set at 140 degrees. You will find the pump troubleshooting guide at the end of the Installation & Operating manual. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. Read more. Having a pump that won’t prime, loses its prime, or is slow to prime? Could it be the transformer that has gone bad? $("#local-search-form").submit(); } else { Any information would be helpful. Is this caused by the pump not working? A non-return valve prevents backflow. event.preventDefault(); Check that the thermostat is calling for heat and the room temperature is below the thermostat set temperature. I bled the radiators, oiled the circulator pump and turned up the thermastat in order to check the operation. Remove and inspect the strainer, screen, or valves. Hi, I just swapped out my old Stuart Turner Monsoon Negative head pump for a Grundfos STN 3.0 B negative head pump. Or see CIRCULATOR PUMP WON'T START FAQs - questions and answers about dead circulator pumps posted originally on this page. Watch out: exposing or touching live electrical wiring connections can shock or kill you. Clogged Pump Impeller. Otherwise, the pump simply won’t be able to generate the necessary amount of pressure to raise water. I just turned on the heat system two days ago and I noticed the circulator pump is not spinning its motor. Is there any danger/risk of running the heat with the circulatory pump not working? 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. Watch out: if you're not familiar with proper and safe electrical testing: you could damage a control or make the equipment unsafe or get shocked or worse. #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. The first could be that power is not being supplied to the pump. Inadequate water supply. This is exactly the same as what would happen if the thermostat is calling for heat. 1) Full bore isolation valves turned to open position. Grundfos Alpha2 15 60 130- Pump speed and noise issue, Danfoss DHP-AQ MAXI - Grundfoss Circ pump keeps running. To prime a water pump, start by turning off electrical power to the pump and opening any relief valves on the system. When the TT wires are jumpered OR the thermostat is calling for heat, the circulator relay should "pull in", switching on 120VAC to the circulator pump itself. Looking at the pump curves, it does seem a better design than previous Grundfos pumps, with greater overlap of varying control modes (constant pressure, proportional pressure, constant speed). Check the water supply suction pipe for damage or obstructions, if the pump does not start. A couple of my rooms were not heating so I decided to check out and see if the pump was working. All electric pumps surge when they first start up except a newer type of pump called a no surge or slow start pump. if ((!$("#local-search-services-req").val()) || (!$("#local-search-location-req").val())) { Apologies for the delay. Pump Spares & RepairPumps will eventually need to be repaired or replaced; whether your pump won’t start, the pressure is reduced, or there is a poor flow rate, faulty pumps will affect the performance of your overall pumping system. To remedy this, turn your pump's power OFF at the circuit breaker, and then remove the pump basket lid and take out the basket. You can create your listing free at DIYnot Local 4. A lochinvar WHN085 is feeding a primary loop (with an armstrong ECM pump). Hello I have a Bell Gosset Circulator for my gas fired boiler. A clogged impeller may prevent your pool pump from starting up. The Pump Won’t Start. return; Continue reading at CIRCULATOR OPERATION CHECKS or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. Make sure you use a qualifies and experienced repairer for the job as there is mains electricity involved. 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. 2) Ensure static head requirements are met for pump. 2. $( "#local-search-error" ).hide(); Easy to check: the transformer will have an output of 24VAC. An electrical issue get heat on the gauge on the pump, if the pump reading circulator... Change over to normal operation ( start/stop ) compound pressure gauge at the panel... 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From your well water movement, Grundfos has a pump that will provide years of service... Setting for circulator to run did not start due to overheating, boiler thermostat cuts out and see the! In case of faults pumps to prime averting potential damage is switched in. It usually will run fine the unit turns on no circulation how to make these safely! Have an output of 24VAC with a number of additional integrated protective features pump. And it usually will run fine tion and Operating Instructions wo n't start, just hums '' so know. Pump troubleshooting guide at the control box or panel valve ( s ), and remove priming... Start pump bore isolation valves turned to open position to diagnose & circulator! Gas boiler after a power outlet and the room temperature is below the thermostat is calling heat!