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Appendix
32
homexpert
tm
by Honeywell THR870CUK Programmable Thermostat
33
In case of difficulty
Thermostat screen
is blank
• MakesuretwofreshAAalkalinebatteriesareproperlyinstalled(see
page 25).
Heating or cooling
system does not
respond
• Checkthermostatbatteries(seeabove).
• Makesureheatingandcoolingsystemshavepower.Checkfusesand
circuit breakers and replace or reset as needed.
• Checkwiring(pages22-24)andsystemconguration(pages27-31).
• Runsystemtest(seepage26).
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).
Limited Warranty
Honeywell warrants this product for 1 year from date of purchase. We undertake to replace or repair at
our discretion, products should they become defective within 1 year solely as a result of faulty materials
and or workmanship.
Understandably if the product has not been installed or maintained in accordance with Honeywell’s
instructions, has not been used appropriately or if any attempt has been made to rectify, dismantle or
alter the product in any way the warranty will be invalidated.
This product warranty states Honeywell’s entire liability. It does not extend to cover consequential loss or
damage or installation costs arising from a defective product.
If the product is defective, please return it together with a proof of purchase or receipt to the place of
purchase.
This does not affect your statutory rights.
If you require further information about this product, call the homexpert
tm
by Honeywell technical helpline
on 0845 604 2893.
For a full list of terms and conditions please visit www.homexpertbyhonyewell.com.
Please retain these instructions for future reference.
© 2010 Honeywell International Inc.
17


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