Honeywell ST9400A1002 1 Day, 2-Channel, 10 W, 24 V

Product Information

The ST9400A has a large backlit LoT display which provides text feedback with help and programming hints as well as automatic summer/winter 1 hour change and a choice of 3 different built in programmes. All ST9400 models incorporate the Line of Text (LoT™) display that gives clear plain English instructions whenever any button or slider is used. The unit has independent controls to Override the time switch setting (turn On when Off or Off when On) and also Boost to just give 1 - 3 hours extra On time. Equipped with advanced technology, the Honeywell ST9400A utilizes a two-channel control system, facilitating independent control of heating and hot water. Energy Effi ciency and the Environment Home energy use is responsible for more than ¼ of the total UK carbon emissions which contribute to climate change.

We have got no heating or hot water tried everything in manual, but I don't really understand it I need someone to explain in simple terms. This document is to be left with the user and forms part of a Home Information Pack WHAT IS A PROGRAMMER? ST9400A is a two channel 1 day programmer with independent timing for control of heating and hot water zones. So when it started to play up (The pump would come on but the boiler wouldn't trigger) I decided the controller had gone wrong (despite a plumber telling me it was just air in the heating system).Choosing the right Honeywell Home Electronic Programmer 24 Hour ST9400A1002, is an important decision, and it's one we're sure to help you get right. The ST9400A does not directly control the temperature but works together with other temperature controls, such as room thermostats and cylinder thermostats, to control your heating and hot water system in your home.

Features Easy to use slider and buttons combined with ‘LoT’™ Technology and an ‘OK’ button , allows you to confi rm changes and stay in control. Just one niggle, when the display is lit by a clear blue sky during the day the display shows dark patches. The programmer is a 1 day programmer with two on/off switching times per day and can be used for, combi boilers, heating zones or any application where small electric loads need switching.Tightening the 2 x screws underneath was very awkward too, although that was also true of the old unit. All Honeywell ST9400 models incorporate the Line of Text (LoT™) display that gives clear plain English instructions whenever any button or slider is used. I have a Combi boiler, and the Hot Water control is wired into the boiler 'Pre Heat' (Tip: with Pre Heat On opening a hot tap for a couple of seconds signals hot water required - give time for the boiler to heat up the Hot Water heat exchange before running off hot water - saves lots of water and gets you hot water quicker, also if the boiler valve is in the Central Heating position it needs time to change over). They help us to identify popular products and understand your browsing habits so we can display relevant adverts to you.

The Honeywell ST6400A Programmer can be used for combi boilers, heating zones or any application where small electric loads need switching. Finance is provided by PayPal Credit (a trading name of PayPal UK Ltd, Whittaker House, Whittaker Avenue, Richmond-Upon-Thames, Surrey, United Kingdom, TW9 1EH). The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products.If you are concerned about possible frost damage to any exposed pipe work, it is advisable to fi t a frost protection system – your installer can advise you about this. The Honeywell ST9400A offers a user-friendly interface, allowing homeowners to easily program and adjust the temperature settings according to their preferences. Read more about the seller notes “Very good physical condition comes with wall fixing bracket the timer has been bench tested and functions checked see pictures. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Most purchases from business sellers are protected by the Consumer Contract Regulations 2013 which give you the right to cancel the purchase within 14 days after the day you receive the item.

In the Winter the Central Heating is set to Once a day (the Heating being controlled by the room state) - early morning to late at night, the Hot Water remains on its Auto setting. I set my Hot Water and Central Heating to come on for a couple of hours in the morning, and again in the late afternoon, the Hot Water goes off early evening, and the Central Heating turned off late in the evening.I have seen on some reviews that people complained that the clock as comes was 5 minutes slow, and they could not reset it. Extra Large LCD (Liquid Crystal Display) with Backlight provides added user friendliness and clearer viewing – even in the dark. We're sorry but this product has now been discontinued by Honeywell Heating Supplies and can no longer be purchased. It can be used for combi boilers heating zones or any application where small electric loads need switching.