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I've no particular love of the computherm stat. It is just the fact that the CM927 is not doing great and I wanted to try something else. I've looked at reviews of Salus, Drayton and others and can't seem to find any that has'nt got negative reviews so this is just a stab at trying to get my...

Thanks for the replies guys. My system hasn't altered in any way but I have never really been satisfied with the Honeywell CM927 since it was fitted and it has been getting less satisfactory in the last few months. I was not really not looking for solutions to the CM927. I wanted to try another...

Thanks DH I've tried standard durocell and also industrial durocell (in at the moment) but am willing to try any recommended

Thanks flameport but I still have a query. Is it OK to have mains voltage on the reciever unit relay? That manual says that the receiver unit has a potential free alternating relay

It is not responding to temperature changes .IE temp is 2 deg above setpoint but it is still switching the heat on. Same the other way round - below the SP but not switching on. Renewed the batteries but no difference.This has been a gradual deterioration over the last 6 months so I am looking...

Is a Computherm Q7 RF wireless thermostat suitable to connect to a Worcester Ri 24 boiler? I want to replace a Honeywell CM927 wireless thermostat which is playing up. The Q7 RF manual states that it is suitable for connecting to any boiler that has a double wire connector for a room thermostat...

I am not an idiot. I just thought it better to get advice from the pros who do this stuff rather that trust a leaflet that is probably incorrected translated from a foreign language

Where is the best place to install the Magnaclean filter ? IE Boiler outlet or boiler return

Yes, I have a multimeter and can use it

Thanks again DH, I have re-checked my wiring and it is per the diagram (including the pump overrun). My aim was for the room stat to switch the boiler ON and OFF independantly of the HW and my system doesn't do that. If I switch the HW OFF at the timer, the boiler switches OFF and the room...

Is the Horstmann wired as follows (H=Horstmann, WC = wiring centre)? H - WC L - 1 N - 2 1 - 7 2 - NOT connected 3 - 6 4 - NOT connected Has the system always been Y plan, or has it been recently converted from gravity HW to fully pumped? Sorry DH, I forgot to confirm that thr...

HORSTMANN C27 Thanks. Is the Horstmann wired as follows (H=Horstmann, WC = wiring centre)? H - WC L - 1 N - 2 1 - 7 2 - NOT connected 3 - 6 4 - NOT connected Has the system always been Y plan, or has it been recently converted from gravity HW to fully pumped? The system has...

HORSTMANN C27

The batteries that were supplied with the unit IE AA GP ALKALINE I have since changed them to ENERGISER in the last few hours to see if there is any difference

Can anyone tell me how responsive the CM927 is supposed to be.? My one seems to be incredible sluggish in showing a change. It seems to take an age to change even when I can feel it getting colder. As an experiment, I placed it outside on a cold day and it took a long time to show any change...

Thanks DH That's how I wired it, but my query was "Can I have CH without the HW being on" and the above configuration doesn't do it. Perhaps it can't be done.

Thanks TWGAS. I have 5 wires if the pump live is included. It was the switched live that confused me.

My basic question is - Is a CM927 wireless room thermostat suitable for a Y-plan central heating system. I have modified my central heating system to a Y-Plan. The idea was to be able to controll the HW and CH independantly. The components used are Honeywell. V4073 3-way valve, L641 cylinder...

Cracks have appeared on my minerelle worktop and am trying to source a repair kit without success. The worktop colour is HARRICANA and ref no 2022. Does anyone know of any suppliers?