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BDR91T
Honeywell BDR91T User Manual
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32
F
A
Q
AND TROUBLESHOO
TING
Symptom
P
ossible Cause
Remed
y
ST9420C shows the
message ‘SENSOR F
AUL
T’
and a flashing tap symbol
CS92A sensor error
indication (Press CS92A
button and red light blinks
0.5s on, 0.5s off. Note – light
will switch off after appr
ox
1 minute to save battery
power).
CS92A sensor
cable may be
disconnected from
the wiring terminals.
Re-connect the sensor wired to
the CS92A terminals.
Fault with CS92A
Call Installer
31
33
Table of Contents
Default Chapter
3
Table of Contents
3
Control of Your System
4
General Description of Controls in Your System
4
The Way to Use a Programmer
4
The Way to Use a Room Thermostat / Control of Your Boiler / Optimisation
5
Getting Started with Your St9420C
6
Step 1: Setting the Date & Time
6
Step 2: Running a Built-In Programme
7
Programming Your St9420C
8
The Built-In Programmes / Your Personal Programme
8
Reviewing the Programme Times / Modifying the Hot Water Programme
9
Modifying the Heating Programme / Disabling or Enabling Time Periods
11
Operating Your St9420C
12
Choosing the Operating Mode
12
Overriding the Operation Without Changing the Programmes
12
The Extra Hour Function / the Holiday Function
13
Enquiry Mode
14
Fine Tuning Your St9420C
15
Changing from AM/PM Time Display to the 24 Hour Clock
15
Changing the Installer Parameters
15
Optimisation
17
How to Set Your Hot Water Set Temperature
18
Boiler Service Reminder
18
Countdown to Service / When Service Is Due
18
Shut-Down
19
Operating Your Dt92E
19
Inquiring about the Set Temperature / Adjusting the Set Temperature
19
Switching off / Display Updates / Heating Indicator / Frost Protection
20
Dt92E Operating Indicators
21
Low Battery Indicator / Battery Replacement / RF Communications Indicator / Lockout
21
Dt92E Energy Saving Eco Feature
22
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
23
Changing the DT92E Installer Parameters
23
Operating Your Cs92A Hot Water Thermostat
25
Basic Operation / Battery Replacement / Error Indications
25
Battery Replacement
25
Operating Your Bdr91T Relay Box (if Installed)
26
BDR91T Controls Layout / Automatic Operation
26
Temporary Manual Override / Loss of Wireless Communications
26
Faq and Troubleshooting
27
Frequently Asked Questions
27
Troubleshooting Guide
29
Configuration & Service Data
34
Configuration Data (to be Completed by Installer)
34
4
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Honeywell BDR91T Specifications
General
Brand
Honeywell
Model
BDR91T
Category
Thermostat
Language
English
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