Honeywell mk7 keypad hum?

Hi all this keypad constantly hums otherwise all is fine.The keypad appears to work as it should do and I've tested the wiring for shorts,data tampers etc. Any ideas?

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icos he15 wont ignite?

icos he15 boiler wont ignite. honeywell wireless room stat. turn to 22degrees C. light flicks on and off nothing happens at boiler.

wiring horstmann centaurstat 7?

swapping honeywell stat to horstman, two wires i presume live and swithed,the centaurstat 7 has 1234 could you please advise is 1 live and 3 swich

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Why has my Honeywell CM921 thermostat lost patches of its display?

My Honeywell CM921 thermostat has lost much of its display and can no longer be programmed. I have changed the batteries (new but bought some time ago) which didn't work. I intend buying fresh batteri ... more

honeywell accenta external alarm?

just fitted new alarm, all wiring checks out OK,external alarm/strobe operates OK in test mode but will not operate when alarm is triggered ie opening a door. Any suggestion to cure

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Potterton PRT2/ EP2002 C/H always on (unless at temp)?

I have developed a fault on my Potterton EP2002 Programmer following short circuiting and blowing a fuse. The programmer is sending a constant live to the thermostat – meaning the Central Heating by ... more

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Potterton Programmer not controlling stat?

I developed a fault on my Potterton system as a direct result of trying to change the in room stat (Potterton PRT2) with a new Honeywell DT90e. I wired the new stat incorrectly which blew the 3amp fus ... more

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Boiler or controller failed. Can I direct wire?

Ideal Isar HE24 not working,no fault code showing. Think it it is Honeywell controller. Power is reaching controller but not reaching Boiler. Can I direct wire to Boiler to test this?

f5 has appeared on my thermostat?

hi i have an ideal classic boiler and honeywell thermostat the thermo is showing f5 and pic of spanner how do i fix this thanks

gas valve?

In a vulcan continental boiler can a honeywell gas valve v4600 1029 be used to replace the existing valve v4600 1023

omega5+ panel?

Can a honeywell AG6 bellbox be connected to a omega5 panel somehow, even if it means doing away with tamper circuit on bellbox, as all wiring and bellboxes are way out of reach to anyone. If so a wiri ... more

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Honeywell ST7100 programmer goes blank when RUN selected?

10 minutes after I came home yesterday(28/12/2012) the power cut . Since then the central heating/hot water have not been working. I think the batteries are okay, because you can still get the display ... more

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How can i set night mode on my alarm?

I have recently moved into a new home. There is a Honeywell 8EP416 Accenta Optima Led Alarm already here. We have the installers manual but not the user manual. We have worked out how to set the alar ... more

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Idiots guide required for wiring Accenta G4 to a Pyronix Delta Bell?

I have managed to wire the complete alarm system, 3 x PIRs, 1 x Door Contact, Control Box and LCD Key pad, all looks to be working fine, I am trying to wire a Pyronix Delta Bell but the instructions f ... more

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Potterton Netaheat - no heating without hot water?

Boiler will only fire up when "hot water" selected on controller (EP2002). When hot water is on, radiators also heat up (whether or not the heating is set to "on" on the controller) but cool down whe ... more

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Honeywell vista 20P LCD keypads?

Hello all bit of a problem with above keypads x4. All keypads are sort of unreadable,segmented letters missing that sort of thing but are all backlit, keypad one responds almost to keypresses but 2 ... more

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dmestic hot water near boiling point, howto adjust temperature?

honeywell l641a1005 attached to hot water cylinder with spring band, i have tried turning switch down but has no effect any answers appreciated?

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How can i fix my ferroli Domicompact f 24 b?

hi went on holiday for 2 weeks came back and the honeywell dt200 thermostat battries were dead.changed them but the boiler won't start when the flame shows on the stat? can anyone help

Honeywell accenta g3?

Our alarm keeps going off when we turn our bedroom light on, the alarm's ok if we don't use the light.Don't know what's wrong or where to start, i'am thinking of switching the alarm off altogether, ca ... more

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Converting to Y Plan system?

I am converting my heating system to a Y Plan using mainly Honeywell parts for the wireless room thermostat (HCN60NG), cylinder stat. (L641A), mid position valve (V4073A) and junction box - 10 way(420 ... more

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