How to mend Boiler Thermostat Honeywell

1

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 al... [Read more]

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 bu... [Read more]

rdh10rf?

The thermostat does not appear to be firing the boiler up i have followed some suggestions on this site but no... [Read more]

1

do i need a new dt20rf programmer?

the digital display has gone blank and does not control the heating. the boiler still works and can be control... [Read more]

1

isar he30?

help , i have a isar he30 combi boiler the problem i am having is heating is turned off via honeywell cm927 th... [Read more]

1

Replacing LP112 Programmer?

I'd like to replace my LP112 Programmer & TS 142 mechanical roomstat with something more accurate and with opt... [Read more]

2

Potterton Netaheat Boiler stopped working?

Hello, I have a Potterton Netaheat Boiler with Potterton EP2002 Controls and Honeywell Thermostat. Last night... [Read more]

my combi boiler is oil fired and it is running to often and is also short c?

Please help! Our boiler runs to frequently and short cycles, etc.we have a burhnam boiler (r6-110) with a beck... [Read more]

I have a Honeywell CF wall mounted programmable thermostat thats gone rouge?

My programmer seems to have a mind of its own. It is switching the heating on much earlier than the programmed... [Read more]

1

high pressure on halsetad ace he 24?

do any of you men out there know how i can fix this? with the cold weather i have had heating on lots and have... [Read more]

1

Programming Honeywell CM921?

Hi: The heating engineer installed this unit during installation of a new boiler. This is a 1 day wireless pro... [Read more]

Connecting Honeywell thermostat?

On a Potterton Profile 60 gas boiler. Where do I connect the electrics to the relay of a Honeywell wireless t... [Read more]

1

c h boiler heats HW supply only,no central heating?

My system is a fully pumped central heating installation, with room & cylinder thermostat. Could the motorise... [Read more]

1

hot water but no heating?

hello. i have a worcester danesmoor oil boiler, its a sealed system, honeywell st699b programer honeywell V... [Read more]

What is the operational relationship between boiler and thermostat?

I have a Worcester 28CDi combi boiler with a Honeywell T40 thermostat. I wanted to change the thermostat to a ... [Read more]

we have lost the signal between the Digistat RF2 wireless System?

we have lost the instrutions on how to get the signal between the RF2 unit and the boiler back. the flame on t... [Read more]

4

My Potterton 80e often doesn't start up anyone know why?

My Potterton 80e gas central heating and hot water boiler often won't fire up on its own . We tend to have ... [Read more]

1

what is wrong with my isar boiler/honeywell thermostat?

my wireless thermostat is turned off but my boiler stays on.

1

DIGISTAT RF3 APPEARS TO NOT BE TALKING TO BOILER?

The thermostat registers the temperature but if it is too cold and we try to raise the temperature, the flame ... [Read more]

2

My Potterton Prima F80 is not shutting down?

After many years of service my boiler has just developed a strange fault. Even though the time controller (Hon... [Read more]