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Hortsmann CentaurPlus C27 Programmer with Li-Ion Battery Back-Up Product Code: 68934

Separate timing. 5-wire installation. Override facility. Automatic BST/GMT time change. Boost function.


  • 7 Day Programmable
  • Digital Display
  • 3 On/Off Periods per Day
  • Suitable for Gravity-Fed & Pumped Systems
  • 2 Year Manufacturer's Guarantee
  • 1 Pre-Set Programme
  • IP30
  • Automatic BST/GMT Time Change
  • 2 Year Manufacturer's Guarantee (T&Cs Apply)


Switch/contact rating: 3(1)A at 230V. Temperature range: 0-40°C. H x W x D: 84 x 150 x 29mm.
Additional Information
Technical Specification
  • Brand : Horstmann
  • Product Height : 84 mm
  • Display Type : Digital Display
  • Product Type : Programmer with Li-Ion Battery Back-Up
  • Programme Facility : 7 Day Programmable
  • Central Heating Control Type : Programmers
  • Model No : CentaurPlus C27 Programmer
  • Product Width : 150 mm
  • Temperature Range : 0-40 °C
  • Product Depth : 29 mm
  • Pack Size : 1
  • Suitable System : Suitable for Gravity-Fed & Pumped Systems
  • Installation Type : 5-Wire Installation
  • Power Voltage Supply : 230 V
  • Manufacturer Guarantee : 2 Year Manufacturer's Guarantee (T&Cs Apply)
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

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€58.95 Incl. 20% VAT

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Hortsmann CentaurPlus C27 Programmer with Li-Ion Battery Back-Up is rated 4.4 out of 5 by 10.
Rated 4 out of 5 by from Hortsmann CentaurPlus C27 The C27 does what its says on the Tin. The instruction booklet for the Timer was a little bit unclear in the way it was composed and constructed and I am a trades man of 40+years, so not much hope for the ordinary Joe Soap who is trying to install it..Works well. Happy Customer!
Date published: 2015-01-20
Rated 5 out of 5 by from Perfect Fantastic price, does the job and it's warrantied for two years. Couldn't get better,
Date published: 2014-08-15
Rated 5 out of 5 by from Good value Bought this to replace an old Danfoss timer for my central heating and hot water. Not exactly plug and play, but then again didn't expect it to be. Even so relatively easy to fit even for a novice and all appears to be working well so far. Give more flexibility than my old unit and is a lot more user friendly. Can't really comment on the reliability yet as its only been fitted a couple of days and we don't need to run the central heating at all or the water much, but on test runs all seems to be ok. Hopefully it will last as long as the previous unit, but as and when it ever does need replacement, then the next time it should just be a matter of unplugging this one then plugging a replacement in its place.
Date published: 2014-07-15
Rated 5 out of 5 by from GREAT!!!! Bought this to replace a 20 year old Horstmann H525, Although the back plate has now changed it was a doddle to fit, new back plate fitted on the old holes so no drilling, wiring just as simple as the old on and no links to install. As for reliability, well I put 5 stars but only been on a few days. Easy to program too.
Date published: 2014-07-15
Rated 5 out of 5 by from Hortsmann CentaurPlus C27 Prog I purchased this programmer for a relatives heating system because I have used it in my own house for several years. It does everything I require and has been totally reliable.
Date published: 2014-06-14
Rated 1 out of 5 by from NEVER AGAIN Bought this to replace an old programmer that is not avaliable anymore wired it in the c/h & h/w lights came on but nothing in the display screen called an electrician he said it was the boiler got a plumber in he told me it was a faulty programmer. exchanged it put the new one in set the time/date/year then nothing you can push the reset buttons and after that all you get is a blank screen. my plumber told me not to use horstmann. now got to take it back again this time i will go for a drayton
Date published: 2014-05-20
Rated 5 out of 5 by from I didn't get a 'Series 2' C27 This is a good quality programmer and good value compared to other brands. However, I did not receive the 'Series 2' version shown on the website when I bought it from my local Screwfix. I only found this out after I had installed it when I noticed it doesn't have a back light display nor auto adjustment for GMT/BST. If you want these features ensure you get the up to date 'Series 2' version.
Date published: 2014-03-03
Rated 5 out of 5 by from Great price This is a very good price for an excellent heating programmer, you will find this had to beat anywhere. Highly recommend.
Date published: 2014-02-08
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