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

Product Information

T echnologies Sarl, Ecublens, Route du Bois 37, Switzerland by its Authorised Representative Honeywell Inc. 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. Just one niggle, when the display is lit by a clear blue sky during the day the display shows dark patches. Bought it last year in 0ct 2019 and was working fine but from last 2 months its screen starts playing up and now its 70% gone.

Think about how you use your domestic hot water – if you have a storage system, it is not necessary to have this switched on all the time, even when you are in the house. This feature enables homeowners to effectively manage their energy consumption, reducing wastage and optimizing efficiency. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. 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. The Honeywell ST6400A Programmer can be used for combi boilers, heating zones or any application where small electric loads need switching.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). 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. With its advanced features and durable construction, it offers homeowners precise control over their energy usage, enhancing comfort and convenience while minimizing wastage. 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.

The better your problem and question is described, the easier it is for other Honeywell owners to provide you with a good answer. ST9400A is a two channel 1 day programmer with independent timing for control of heating and hot water zones.This programmer did not need any rewiring as a replacement for my old Danfoss FP 715 programmer as it uses the same wiring base.