585447
13
Zoom out
Zoom in
Previous page
1/15
Next page
Installation and Setup
24
homexpert
tm
by Honeywell THR840DUK Digital Thermostat
25
Description of functions
Ot Minimum boiler off time: Check proper setting
for your system (see page 23).
Cr Cycles per hour: Check proper setting for your
system (see page 23).
Ot Proportional band width: If your heating system
is oversized for your home, you can compensate
by increasing the width of the control proportional
band up to 3°C.
tO Temperature offset: In some cases, the
thermostat must be installed in a location that
does not accurately control temperature for
optimum comfort in other rooms. You can set the
thermostat to compensate for this by adjusting
the offset.
uL Maximum temperature: When the p button
is pressed, the thermostat will not allow a target
temperature above the maximum you set.
LL Minimum temperature: When the q button is
pressed, the thermostat will not allow a target
temperature lower than the minimum you set.
ES ECO default temperature: This is the default
target temperature when the thermostat is in ECO
mode (see page 11).
HC Heating/cooling options: When set to 1, the
thermostat can control both heating and cooling
systems (see page 9).
OS Frost protection temperature: Minimum
temperature allowed when the thermostat is off
(see page 8).
EH Electric heat: Check proper setting for your
system (see page 23).
In case of difficulty
Thermostat screen
is blank
• MakesuretwofreshAAalkalinebatteriesareproperlyinstalled(see
page 18).
Heating or cooling
system does not
respond
• Checkthermostatbatteries(seeabove).
• Makesureheatingorcoolingsystemhaspower.Checkfusesand
circuit breakers and replace or reset as needed.
• Checkwiring(pages14-17)andsystemconguration(pages20-24).
Desired temperature
cannot be maintained
• Ifaboveremediescannotresolvetheproblem,thethermostatmay
have to be moved. Make sure it is not installed near sources of hot or
cold air (radiators, windows, heating or cooling ducts).
• Ifthissymbolashesonthescreenduringnormaloperation,afaulthas
occurred. Contact Honeywell Customer Care for assistance (see back
cover for contact information).
13


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Honeywell THR840DUK at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Honeywell THR840DUK in the language / languages: English as an attachment in your email.

The manual is 2,6 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info