1. F

    Heating not working as it should

    Hi, we have our heating split across 2 levels - we can control the heating for each floor. On the Horstmann panel in the middle, there are 3 settings - heating upstairs, heating downstairs and water. I leave the heating settings on all the time, but the water is on a timer. My understanding...
  2. SenileGit

    Horstmann 2 Channel Programmer won't allow different hot water and central heating settings

    Hi everybody, I have just replaced an old Horstmann Channel Plus H27 programmer with a Horstmann Channel Plus H27XL Series 2 programmer, but the new programmer duplicates whatever settings I put on the hot water channel, onto the central heating channel, and vice versa. Whichever one I change...
  3. ajayuk90

    Standard Economy 9-Please tell me how this works in my current flat ?

    I moved to UK recently and my rented flat has Horstmann Radio Telemeter Series 2A electricity meter. However, I have been asking both my electricity provider SSE and my Landlord on a query for which they are not having answers. 1. Does the meter consider all appliances usage during Off peak...
  4. G

    Two Hive Thermostats 1 Boiler

    Hi Everyone, I'm new here and dealing with a very bespoke system so please be gentle. Basically there are two zones in the house. Upstairs (with hot water) and downstairs. Originally the zones were controlled by two Horstmann H17 XL with separate thermostats in each zone. So far I have...
  5. A

    Replace Horstmann H17XL programmer/complex underfloor heating

    Good afternoon, I was hoping someone could help me/give me advice here regarding improving our heating system at home: We've moved into a house that we bought earlier this year and the boiler and heating controls were outdated so we upgraded the boiler to a Worcester Bosch Greenstar 8000 Life...
  6. V

    Economy 7 hours wrong, how to tell time on Horstmann timeswitch?

    Hi, I recently had a fused spur plate replaced with a regular single switched socket, as the spur wasn't being used for anything (must have been an old storage heater which had since been removed). When the electrician first put it in it didn't actually work, and since he only came to replace a...
  7. EcoGirl

    Horstmann Economy 7 Immersion Timer battery problem?

    Hi, Summary: I am looking to buy a replacement battery. Does anyone know where or how to find one? I believe this is the problem. I changed the tank to a thermal store. I left the Horstmann switched off at the mains ie no power to charge the battery, for several years. Apparently they won't...
  8. R

    Single immersion cylinder not heating during Economy 7 off-peak times

    Hi, first time posting here. I’m on an Economy 7 tariff, but up until recently only used it to heat my storage heaters, but never used it to heat water in the cylinder overnight as I just use the electric shower whenever I need it. I had the boost timer to come on at 7pm for half an hour to...
  9. Gwreay

    Horstmann H37XL Nest Integration

    Good morning, I've had a look at a few threads featuring a horstmann H37XL however the wiring on the posts is slightly different in that our box has 2 lives, earths and neutrals. Our central heating is a 2 zone controlled by Drayton ZA5 aculators, oil fired and currently using the horstmann...
  10. Srikanth06

    Hive with horstmann 27xl

    Hi, Iam new and this is my first question. So please excuse me if i break any forum rules. I bought hive hot water and heat reciever, ie dual channel. And i figured it out how to connect to my horstmann programmer. However i have realiszed i have two zones ,upstairs and down stairs and two wired...
  11. M

    Programmer / Timer replacement on an old boiler . Pump over run needed

    I wonder if anyone is able to help. I have a ServoWarm Elite 50 Boiler . it is over 30 years old , and is extremely reliable and has never really broken down. This is a simple hot water boiler system . with a pump and thermostat all in the housing. there is no room thermostat. so all it does is...
  12. W

    Replacing complex Horstmann C21 & Drayton Digistat+ with Nest V3

    Hi, I have what seems to be a complex system with a Worcester Greenstar RI condensing boiler, a hot water tank with two pumps for HW and CH, a Horstmann C21 programmer, linked to a Drayton Digistat+ wireless thermostat. I'd like to replace them with a Nest V3, but I discovered a nightmare of...
  13. R

    Horstmann Electronic 7 - Water Heater Immersion Controller

    Hi all, I have searched the forum but I cannot find this issue and I have contacted the manufacturer but it is Saturday and they are not back until Monday. System: Premier Plus Unvented Cyclinder with Horstmann Electronic 7 controller. We have had a few power cuts over the last couple of...
  14. hem30

    Hortsmann H27XL to Drayton MiGenie Wish 2

    Hi Folks, I am new to this forum and would appreciate your help. I currently have a Hortsmann Channel Plus H27XL programmer for HW & CH. I recently bought a Drayton MiGenie Wish 2 one (wireless) as i was told that it was easy to swap this over but this has baffled me? The wiring on my current...
  15. J

    Horstmann HRFS1 Wireless Thermostat Both Red and Green lights Blinking

    I have a Hortsman HRFS1 wireless thermostat. It's worked fine for five years but suddenly it seems to have developed an error. The red light(power) and green light (connection) on the receiver unit start blinking together and I can hear a faint clicking noise from the receiver whenever the...
  16. A

    Swapping T40 for a Horstmann DRT2

    Hi all, Need some help swapping out a current T40 Thermostat for a Horstmann DRT2 Got two images below, one of the current wiring into the T40, and the other of the diagram from the DRT2. I HAVE had a look at previous threads on here and other sites, and am getting confused as I can't seems...
  17. GoodOne

    Horstmann 425 tiara timer not moving/working.

    Hi, i replaced the old cover with a new one without replacing nor disturbing the back plate setting. However, the timer still does not work as it was not working before with the old one. Reason for me to change it because i would like to use the timer. Any advise would be appreciate.