#Grundfos scala 2 on demand code
#Grundfos scala 2 on demand series

Remember that no matter what you want, PlumbersStock has the best prices on all kinds of Grundfos pumps. The versatility ensures you have the machine you need. It works much like a variable frequency drive ( VFD). Certainly, the show-stopper with SCALA2 is the intelligent pump technology that ensures perfect water pressure automatically. The SCALA2 is as quiet as a modern dishwasher, operating at 47 dba. Where they differ is what really matters. Here are the SCALA2 models in question:īoth models share many of the same standard features that you’d expect, like dry run protection and a max operating ambient temperature of 32 to 113-degrees Fahrenheit. It ramps up and down when it needs to with its constant pressure system (more on that in a second). SCALA2 is built to meet your water flow demands. You no longer have to worry about horsepower when buying a residential booster pump. 230v MQ3-45 1 HP booster pump (all sold out).115v MQ3-45 1 HP booster pump (all sold out).230v MQ3-35 3/4 HP booster pump (all sold out).115v MQ3-35 3/4 HP booster pump (all sold out).For customers who want to continue buying the MQ3 series, PlumbersStock will carry it as long as we can because we know plenty of people will still be looking for it. You could say that it’s already begun and probably will be complete in June. They have made it easier to meet the variable demands of your plumbing system while delivering the reliability and integrity you expect with Grundfos engineering. SCALA2 did have a few manufacturer flaws (more on that later), but they’ve now been fixed, and it is the superior pump.

#Grundfos scala 2 on demand series

Though SCALA2 hit the market a few years back, many customers remained dedicated to the older MQ3 series for its reliability. So how does the SCALA2 vs MQ3 series measure up? Our customers are very familiar with Grundfos. The latest and greatest in residential pressure boosting pumps is now officially the SCALA2 series. if you want to check that out or learn all about the differences between SCALA1 and SCALA2, we have the resources for you. I am at my wits end with two this and am trying to fix this issue.Grundfos has now released the SCALA1. My goal is to end up with good water pressure and a quiet unit that does not fail after 4 years!! I am at my wits end with two this and am trying to fix this issue. I am now concerned that the failure of the previous pumps (well and MQ) were caused by the same thing that is causing the issue with the SCALA2. The pump will be in a closet in the same room that we are finishing. we plan to finish the basement and don’t want to go back to the MQ as it was loud - and this judgement is based off noise heard on the main and second level. The unit is Quiet!! However we are concerned that the motor fluctuations in the pump and our water heater will cause the units to fail prematurely. we like the SCALA 2 - pressure is good and immediate. I was told that the town mandated the builder place pressure pumps in all the houses on our street in order to get approval to build the development. We have an irrigation system that we run at most 6-8 weeks in the summer. Now the Gurunfos rep is saying that we should get rid of the SCALA 2 and go back to the pump we had previously- MQ-3.Ĩ yrs ago we had a well pump which failed after 4ish - we were told there was a hole in the bladder. per Grundfos reps - back flow valves removed from the unit and there was one additional valve before the unit that was also removed. water pressure checked at the house (after the meter) -35psi water pressure checked at the street - 35psi we noticed and then reported the issue to our plumber, Grundfos instructed him to replace the pump to fix the issue.

I have video clips of the pump and water heater along with a pressure gauge readings while it is happening. The fluctuations also cause fluctuations at our on demand water heater - the temp of the water doesn’t change but you can hear the heater motor surge when the SCALA surges. You can see and hear the water fluctuations at the end source (toilet and faucets).

#Grundfos scala 2 on demand code

Periodically the #5 error code lights up. This cycle repeats about every 45-6o seconds as long as the demand remains. However, with a large draw (toilet flush, dish and clothes washer and tub) the pressure starts off good and then after about 45 seconds the pressure fluctuates from low to high. Pump turns on with demand and has good pressure. We had a SCALA 2 installed several months ago and have been caving issues ever since.