Table Of Contents - Honeywell Home ST9420C User Manual

Contents
CONTROL OF YOUR SYSTEM
General Description of Controls in Your System ............................................... 4
The way to use a Programmer .......................................................................... 4
The way to use a Room Thermostat / Optimisation .......................................... 5
GETTING STARTED WITH YOUR ST9420C
Step 1: Setting the Date & Time........................................................................ 6
Step 2: Running a Built-in Programme ............................................................. 7
PROGRAMMING YOUR ST9420C
The Built-in Programmes / Your Personal Programme ..................................... 8
Reviewing the Programme Times ..................................................................... 9
Modifying the Hot Water Programme ................................................................ 9
Modifying the Heating Programme ................................................................. 11
Disabling / Enabling Time Periods (for Heating and/or Hot Water) ................ 11
OPERATING YOUR ST9420C
Choosing the Operating Mode (for Heating and/or Hot Water) ...................... 12
Overriding the Operation Without Changing the Programmes ....................... 12
The Extra Hour Function (for Heating and/or Hot Water) ............................... 13
The Holiday Function ...................................................................................... 13
Enquiry Mode .................................................................................................. 14
FINE TUNING YOUR ST9420C
Changing from AM/PM Time Display to the 24 Hour Clock............................ 15
Changing the Installer Parameters ................................................................. 15
Optimisation..................................................................................................... 17
BOILER SERVICE REMINDER
Countdown to Service / When Service is Due ................................................ 18
Shut-down ....................................................................................................... 19
OPERATING YOUR DT92E
Inquiring about the Set Temperature / Adjusting the Set Temperature .......... 19
Switching Off / Display Updates / Heating Indicator / Frost Protection .......... 20
DT92E OPERATING INDICATORS
Low Battery Indicator / Battery Replacement ................................................. 21
RF Communications Indicator / Lockout ......................................................... 21
DT92E ENERGY SAVING ECO FEATURE
Entering ECO Mode and Setting the Energy Saving Time Period ................. 22
What Happens in ECO Mode? ........................................................................ 22
How to Exit ECO Mode ................................................................................... 23
FINE TUNING YOUR DT92E
Changing the DT92E Installer Parameters ..................................................... 23
FAQ AND TROUBLESHOOTING
Frequently Asked Questions ........................................................................... 25
Troubleshooting Guide .................................................................................... 27
CONFIGURATION & SERVICE DATA
Configuration Data (to be completed by Installer) .......................................... 30
Boiler & System Service Log ........................................................................... 31
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