Rated 1 out of 5Â by FastGreenSealion Failed after 5 months
After 5 months the UPS2 would only come on promptly when it had been used recently. When required for the first time in the morning or evening, the green light would come on and buzzing and pulsing noises could be heard from the pump but it was clear the impeller was not rotating. After ~2 minutes the impeller would start rotating. Unfortunately by this time the boiler had tripped out due to no water flowing through it.
Contacted Grundfos, who said "there may be some electrical issue with that range" and recommended replacing with Alpha 2L - which I did and this has worked fine.
30 Sep 2015
Rated 1 out of 5Â by ChrisKen Disapointed.......
Bought this pump due to the good Grundfos name and it matched the spec the old failed Myson pump it was going to replace.
The instruction book is a waist of time, no trouble shooting guide just a series of pictures not really showing a great deal.
When installed the pump didnt have the torque to start the impeller. The system was drained and refilled as per requirements but the pump would just chugg. The plumber said the pump was defective as it would not get up to speed - seemed like the motor didnt have the torque required.
Tried a second hand pump just to make sure and bang it worked straight away.
Pump returned for refund so sadly disapointed with the product!
29 Aug 2015
Rated 4 out of 5Â by Bobthebuilder22 Replacement heating pump
An original UPS pump fitted approx 25 years ago. Replaced pump with similar model (make,form,fit and function) in Nov 2014 which failed April 2015. Returned faulty pump to Screwfix centre, Witham who provided an instant replacement with no quibble. Replacement pump fitted and working within minutes.
30 Apr 2015
Rated 5 out of 5Â by PGas Good Pump, Good Price
I only buy grundfoss pumps, too many returns with other brands and they don't last.
30 Apr 2015