danfoss

  1. C

    Programmable thermostat Danfoss wiring

    Hi guys. I have a question about wiring scheme and how to wire my heating floor thermostat. I have this scheme and correct me if I am wrong but I have to connect floor mat wires with L load and N load holders and true live and neutral with L and N, right? And how do I connect two sensors, it...
  2. E

    Danfoss tp9000 service interval timer reset

    So I've read some similar older threads that have posted some images on how to reset this damn thing (only had my boiler serviced 4 months ago). Can anyone help with the sequence as the other thread help doesn't seem to work with mine...
  3. M

    Domestic Danfoss CHRONO setting

    I’ve recently had a new boiler and one of your thermostats installed a Danfoss RET1000 B/M/MS thermostat Is it normal for the thermostat to fire up the boiler for 3 minutes and then turn off for another 4 or 5 mins and then come back on for another 4mins etc 24 hours a day once it has hit the...
  4. A

    Thermostat/Control box help

    Hi all. I'm trying to fit some smart thermostats but they require a mains connection. I have the wiring in place from the existing set up (battery powered thermostats), but they have no mains voltage going through them. The wiring goes to a Danfoss WC4/B wiring Centre as the central heating is...
  5. rolyberkin

    Danfoss FP975 fault code n33

    Have a customer whose time clock is showing the above fault code, does anyone know what this relates to please? Is it an end of life issue!?
  6. P

    Help with Danfoss Service Interval Timer

    I have the same problem as the OP in this old thread service interval timer help! - https://www.electriciansforums.co.uk/threads/service-interval-timer-help.100630/ I tried the solution offered there but unfortunately the instructions must be for older models of the thermostat. My model is...
  7. Midwest

    Danfoss TP9000 trouble shooting

    Ok I give up. In my new build, been having trouble with the above & heating. Heating has been staying on outside switching periods, e.g. in the middle of the night. Got onto developer, and whilst waiting for them contacted Danfoss, who suggested it was faulty TP9000 (TP9000 was turning on...
  8. J

    Danfoss CP715 SI Timer Trouble

    Please bear with me while I try to explain this..... I have a Danfoss CP715 SI Timer which is no longer "talking to" my Flexicom Glo-worm boiler. The display is on on the timer, all the lights come on when I switch either the water or heating on via the 1hr buttons or the daily programme...
  9. N

    changing danfoss 103 timeswitch to drayton lp722 programmer

    currently attempting to change over the old danfoss to the programmer I,m having great difficulty finding a wiring diagram to do this.After trawling the net I came across a site which said that combi boilers do not need a 2 channel programmer as the hot water is on demand when a tap is opened. 2...
  10. M

    Nest 3rd Gen Thermostat

    Hi I have a Nest 3rd Gen Thermostat and am wanting to replace my old Danfoss T9000. I have remove the Danfoss from the wall however I have 4 Live and 3 Neutral wires plugged into that and can't work out where why or where they are supposed to go. Has anyone had anything similar or know what...
  11. P

    Retofit Danfoss with Ecobee 3 thermostat

    Hi, I have a Danfoss programmable thermostat. I would like to retrofit this with a smart wifi thermostat; the Ecobee 3. Danfoss wiring manual: http://heating.danfoss.co.uk/PCMPDF/38161v01s7-06.pdf. Page 5-10 Ecobee 3 wiring manual...
  12. O

    S Plan Assumed Knowledge - Need General Info

    Hi All. Am about to enter into the world of S Plan heating systems and need some general knowledge as I have none when it comes to plumbing. The system comprises of the following: It is a Danfoss S Plan With 2 * 2 Port Zone Valves With Programmable Heating & Hot Water Thermostats 1 Worcester...
  13. D

    School Bell System

    Am working at a local school installing CCTV system. The headmaster collars me today and asks me whether I can automate the bell ringing system and puts in my hand a leaflet on the Danfoss 841. I had a quick look at the current system, which is a single push button in the school hall that rings...
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