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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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Honeywell ST9400C Programmer 3.1 5 31 31
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
avoid Troublesome programmer and poor service from Honeywell...check internet for issues with this programmer 15 Jun 2015
easy programmer This product was very easy to install, with a very simple programming set up. 3 May 2015
Very unreliable programmer The Honeywell ST9400C has perfect looks, a lovely light blue large backlit display, a massive array of features such as up to 3 hour boost function and holiday hold off. But....it's very unreliable. Without warning it WILL fail. I've now replaced two units in just under three years. Neither unit made it to eighteen months old. The fault on both occasions appears to be the internal relays fail in a weird manor. Only one circuit will switch on, either H/W or C/H but not both. The display will show them both on if both have been selected but only one circuit will be powered. Avoid. 4 Mar 2015
  • 2015-08-29T14:51:47.778-05:00
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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