Thursday, 3 February 2011

Ferroli Romeo W RF OpenTherm thermostat "NoCN" or "NoCM" error?

So you got a Ferroli Optimax bolier with the built-in programmer/clock and you are replacing it with this ROMEO W RF wireless OpenTherm thermostat:












You've connected the RF bridge, powered up the room unit and got RF comms going, but you get a fat "F" or "E" fault codes displayed on the room unit and the built-in programmer/clock displays "NoCN" or "NoCM":
















The Ferroli manual doesn't tell you to disconnect the programmer/clock after installing the RF bridge. To fix the problem, disconnect the programmer/clock by pulling out the wiring loom going to the back of the clock out and leaving it disconnected.

 Note: if you also want to control your boiler from your phone/Internet, read the following

 Remote boiler control with Ferroli ROMEO W/RF OpenTherm thermostat and Marmitek UM7206 X10 module

 http://blog.belodedenko.me/2015/01/x10-remote-boiler-control.html


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5 comments:

  1. Marcus27 April 2011 at 13:20

    Hi,

    Just wondering where you bought this thermostat from? I can't seem to find it anywhere!

    Any info would be great,

    Cheers,

    Marcus

    ReplyDelete
  2. belodetek5 May 2011 at 13:00

    I got mine from Russia, since it is not available in the UK for some strange reason...

    ReplyDelete
  3. Kims Gulf adventure20 June 2011 at 18:05

    ab - was it mail order from Russia or did u 'pick it up' I have the wired version but would like the RF version
    Kim

    ReplyDelete
  4. belodetek21 June 2011 at 19:26

    I got it forwarded by a relative over there. There are Polish stores selling it also, possibly mail-order. Have a look using the P/N below:

    Wireless thermostat ROMEO W RF
    P/N: 013101XA

    External temperature probe:
    1KWMA62U

    --ab1

    ReplyDelete
  5. belodetek21 June 2011 at 19:26

    I got it forwarded by a relative over there. There are Polish stores selling it also, possibly mail-order. Have a look using the P/N below:

    Wireless thermostat ROMEO W RF
    P/N: 013101XA

    External temperature probe:
    1KWMA62U

    --ab1

    ReplyDelete

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