The HW and CH is otherwise working ie coming on and off as it should, but the pump stays on, and it never used to do this. Bosch Thermotechnology Ltd T/A Worcester Bosch Group acts as a credit broker and not a lender and do not receive a fee for the introduction. Reply. The circulator pump would still turn on though the heat was switched off on the thermostat. I suspect a bad relay, bad zone valve control, or thermostat wires shorted together somewhere. Disconnect them one at a time - labeling if needed to avoid confusion. Once the valve reaches its full-open position, the valve closes an "end switch" that in turn activates the circulator pump itself. Warning: Never bleed a central heating pump when hot. I'll try the cylinder stat tomorrow and let you know the result. If your needs call for a pump with a battery backup system, the Pump Sentry is one of our top featured boiler pump products. The pump will run constantly to monitor the flow temperature and maintain heat curve. Chris I have said too much and thus not been clear. Progress to next rank: 50%. Recently the circulator pump (taco) has been running constantly even though no zones are calling for heat. (your pump should not run indefinatly). In less than 5 minutes the furnace turned off but the circulator kept running. Chris it's possible that the circulator relay on your boiler's aquastat or primary control (or circulator relay if you have multiple circulators) is stuck "on" and needs repair or replacement. +312.838.2400 info@greenmcm.com; Main Menu. A broken circulator pump could cause your entire boiler to eventually break down, which will be much more costly than replacing the pump. i.e. A proper pump diagnostic needs to take place. We have a new system installed and the pump wont go off at all. Camray 5 Oil Combi Boiler, Pump Running Constantly. The supply pipe was hot, and the gauge was at 180*. Does your pump ever shut down 3. It's more energy-efficient to keep the pump running until the heat exchanger has cooled. in some heating areas including in Canadian homes, standard practice is to wire heating zone circulator pumps to run continuously during the heating season. Pump ran and the valve drove towards the MAN end. Get a fixed price for a new Worcester Bosch online. To solve this problem, you will need to bleed the central heating pump. It could also result in corrosion as well as your pump just not lasting as long as it should. I have a recently installed oil fired burnham steam boiler. Hot water could be circulating by convection, thus also causing the boiler to run as cooler water returns to the boiler by convection. Discussion in 'Plumbers' Talk' started by nitonman, Feb 5, 2015. nitonman New Member. We may as well capture as much of the heat as we can. :shock: Otherwise all is well!!!! They had a condensing boiler before but because of money issues, went with a conventional boiler. Let’s look at the specs of a common Grundfos circulating pump … Will any of my expenses, such as travel, be covered? Firstly, setting your central heating pump to the wrong speed is not the end of the world. But sometimes, if the circulating pump is set too fast for your home’s setup, it will cause vibrations within the system that sound like a loud humming noise. The pump may be activated by the thermostat electric power being on to the boiler. when i turned the thermostat down, the hot water was off. Jared, usually the problem you describe is traced to a check valve malfunction at the heating boiler or at the circulator pump (depending on what equipment is installed). Before I left for work, i turned the switch back on, i heard the vent open on the pipe leading to the chimney then the furnace kicked on. . (In this case, the pump runs continuously through the heating season.) Apr 10, 2017 #10 Without going back thru, could it be the heads gone on one of the valves? CIRCULATOR PUMP SPEED SELECTION & ADJUSTMENT, HOME INSPECTION EDUCATION COURESES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES, Go to the boiler (it's a boiler not a furnace, a furnace is a hot air system). Can this be a relay on the control panel in the boiler or the aquastat on my super-store hot water tank? Currently we are only putting on the hot water. Here we discuss troubleshooting and fixing forever-on … But the return pipe remained cold to the touch. So when the weather gets cold and your heat pump runs constantly, myths are born. Normal operation: in some areas circulator pumps are wired to run continuously if the boiler has electrical power but in others the circulator only runs in response to a call for heat. Best wishes 2) After stopping the main engine, the boiler water circulating pump must be run continuously for at least 24 hours. When you switch from HEAT to COOL mode on your system it would make sense for the circulator to turn off as well as your boiler. This is because the boiler heats the water up to (say) 180, then goes off until the water cools to (say) 150, then starts again. Hi , its quite a strange one as the boiler and pump usually liven up at the same time , so if the pump is running the boiler would normally fire up as well. The Taco runs quiet, about the same as the LR20BF, but has no fan which is why it gets hotter than the B&G. When the boiler shuts off, some pumps shut off immediately. I've noticed that the pump seems to be running constantly even when the boiler is not alight. I'm new to combi's and oil but we inherited it on recent house move. If there are issues with your boiler, you need a Gas Safe registered engineer to handle the repairs. Read our policy. Knocking the valve case had no effect. My circulation pump is continuously running. But in areas where the heating system is not normally installed with an always-on circulator, if the circulator won't shut off something's wrong and we want it fixed. Finance options are offered subject to status and credit check which must be completed before commencement of works. A 14 day cooling off period applies to all applications. The boiler is not staying on with the pump. The major components of the boiler for a hot water (hydronic) system include: To debug the problem I would check that all of our five thermostats (controlling each of the five zone valves) is OFF - NOT calling for heat (room temp is above thermostat set temp - or the thermostat is simply disconnected). Can't remember … Discussion in 'Plumbers' Talk' started by goodtyneguy, Sep 8, 2010. If the pump is always running, there are generally 3 causes for this: The speed control wire (purple, white and black) going to the pump is damaged - check continuity and connection. It can end up being costly if your circulator pump is running all of the time. thanks keystone but the boiler was off with the pump running all night. If the pump is always running, there are generally 3 causes for this: The speed control wire (purple, white and black) going to the pump is damaged - check continuity and connection. In turn it's the temperature of the water in the system that, monitored by the boilers aquastat, turns the burner on and off. This issue has been going on for sometime but gradually getting worse (pump runs for longer and longer). Sometimes the relay or control can stick which will cause the fan to run continuous. Dan, I'm curious as to why the the furnance and pump are even operating. 4/21/2014 , the heat was turned off this past Saturday. Since hot water is constantly being pumped through the boiler, the entire surface area of the heat exchanger now contributes to the standby losses. reserved. Even when motorised valves fail there should be a by-pass fitted, which alows the pump to circulate back to the boiler. This allows the pump to run without being submerged in water. The pump over run is something that all modern low water content boilers have built in to protect the heat exchanger and get rid of any residual heat. The pumps on the Greenstar CDi range have a permanent live feed to them. The pump carried on, presumably boiler also firing. If it's not doing that we need to look at how your thermostat and circulator are wired and controlled. The system is a single zone baseboard loop. A pressure relief valve (or automatic by-pass valve) is connected between the feed and return pipes, this allows the pump to circulated the water from the boiler if all the radiators should be shut off. Central heating boiler pump running continuously. If the pump is running for hours on end, or constantly, there may be an issue with the system. A boiler is a bit more complex than a forced air furnace in that it has more parts, valves, and controls. It's a grundfos pump working with a Potterton Suprima 30L wall mounted fan assisted balanced flue gas boiler. The water then flows back to the boiler to maintain a constant flow of … Thermostat set to 70 and burning smokeless egss. The system varies the temp based on outdoor reset and something called "indoor feedback". If you happen to have a circulator pump that cannot stop running, then there are a few different things that you can do to help this. Pump overrun stat is faulty. In the U.S. some areas a hydronic heating system is wired so that the thermostat simply turns the circulator pump on - ostensibly to move hot water from the boiler to the heated area. If cancelled within 14 days, alternative payment of full outstanding balance must be made. Only one of the thermostats has a on,off switch. So, we decided to turn it off at the switch. One of its best features is that it is quiet when in operation, it is also submersible; however, it should not be immersed in hot water exceeding 50°C over 122°F. It does not seem that a zone valve is stuck, the various parts of the house heat and cool normally and it's not like the heat is constantly running in a zone.
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