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Honeywell ST9400C Programmer

Product Code: 88608

Separate timing. 2-wire installation. Override facility. Holiday mode. Automatic BST/GMT time change. Boost function. Building Regulations compliant, WEEE, RoHS.

  • 7 Day Programmable
  • 1
  • 2
  • or 3 On/Off Periods per Day
  • Digital Display
  • Suitable for Gravity-Fed & Fully Pumped Systems
  • 3 Pre-Set Programmes
  • 2 Wire Installation
  • Backlit Display
  • Battery Back-Up
  • View more information

Switching/contact rating: SPDT 3(3)A. H x W x D: 99 x 145 x 35mm. Backplate fit: Industry Standard. Suitable for underfloor heating.

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Honeywell ST9400C Programmer Instruction Manual



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Rated 5 out of 5 by Honeywell Best make for controlsdont use anything else easy to use and very easy to fit 8 Nov 2015
Rated 5 out of 5 by Excellent Product My existing 9400C inexplicably failed after 8 years of service, I unhesitatingly replaced it with identical model. This programmer will do absolutely everything any sensible person could possibly wish for, plus some other little niceties if you enter the "Installer Mode" routine 4 Nov 2015
Rated 2 out of 5 by Nice functions, but unreliable Had this one for just over two years before it failed. Internal power supply is poorly designed, and after a period of time there isn't enough oomph to drive both hot water and heating control relays inside the unit. This leads to only one part of the system working. Sale Of Goods Act looks down on items that should last a good while, so there should be the option to repair or replace. Note the manufacturer's code is 4 digits, which the first two are the year, and the second two the week, so 1344 would be week 44 in 2013. Honeywell customer service is not what it used to be, and they effectively stonewall any reasonable attempt to seek redress. If you DO buy one, keep the receipt in a safe place. 5 Oct 2015
Rated 1 out of 5 by Rubbish Yes great features while it was working but failed after 3 years. I definitely do not recommend anyone buys this expensive unreliable junk. 22 Aug 2015
  • 2015-11-26 T10:14:10.031-06:00
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Download more info (pdf)

Brand Honeywell
Colour White
Display Type Digital Display
Installation Type 2-Wire Installation
Manufacturer Guarantee 1 years
Manufacturing Standards Building Regulations Compliant, CE, WEEE, RoHS
Model No ST9400C
Pack Size 1
Product Depth 35 mm
Product Height 99 mm
Product Length 145 mm
Product Type Programmer
Product Width 145 mm
Programme Facility 7 Day Programmable
Suitable System Suitable for Gravity-Fed & Pumped Systems
Switch Type SPDT
Total Product Weight 0.27 kg