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




5 comments:

Marcus said...

Hi,

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

Any info would be great,

Cheers,

Marcus

--- ab said...

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

Kims Gulf adventure said...

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

--- ab1 said...

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

--- ab1 said...

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