RTH221 69-2062EFS 5/6/07 2/6
2.3 Modifying the schedule
n Press the Set button twice until the message
Set Schedule appears. The start time of the
first period (Wake) will flash.
o Press the or button to set the time.
p Press the Set button. The temperature setting
for that period will flash.
q To program the temperature settings for the
cooling mode, place the System switch in
Cool. To program the temperature settings for
the heating mode, place the switch in Heat.
r Press the or button to set the temperature.
s Press the Set button. The start time of the next period will flash.
NOTE: To skip a period, press the Hold button for four seconds
while that period is displayed. When a period is skipped, dashes
appear instead of the time and temperature display for the
period. Only the Wake period cannot be skipped.
t Repeat steps 2 through 6 for each of the remaining periods.
u Once all adjustments are made, press the Run button to save
them and exit. (The changes are also saved if you do not press
any button for 60 seconds.)
2.4 Temporary override of schedule
To temporarily ignore the programmed schedule, press or until
the desired temperature is displayed. The word Temporary will
appear on the screen and the period display will flash to indicate that
the current period has been overridden. The new temperature will be
used until the next period begins.
NOTE: Pressing or once will display the setpoint temperature.
To change the setpoint temperature, press either button more than
once.
Press the Run button if you wish to cancel the temporary setting
before the beginning of the next period.
2.5 Permanent override of schedule
To permanently ignore the programmed schedule, press or until
the desired temperature is displayed. Then, press the Hold button to
maintain the new temperature indefinitely. The word Hold will appear
on the screen.
Press the Run button if you wish to cancel the override and resume
the programmed schedule. The word Hold will disappear and the
thermostat will be set to the temperature programmed for the current
period.
Set the System switch to Off before removing the
batteries. Otherwise, the heating/cooling system could
remain activated even when batteries are removed.
Install two fresh AAA batteries when the low-battery icon flashes on
the screen. The icon appears for 60 days before the batteries are
depleted. Replace batteries once a year, or when you will be away for
more than a month.
Most settings are stored in non-volatile (permanent) memory. Only
the clock must be set if the thermostat was without batteries.
Power Supply
• 2 AAA batteries
Maximum Load
• 1 A @ 24 VAC per output
Temperature Ranges
• Heat: 40 °F to 90 °F (4.5 °C to 32 °C)
• Cool: 50 °F to 99 °F (10 °C to 37 °C)
Operating Ambient Temperature
• 32 °F to 122 °F (0 °C to 50 °C)
Shipping Temperature
• -40 °F to 130 °F (-40 °C to 55 °C)
Operating Relative Humidity
• 5% to 90% (non-condensing)
Physical Dimensions (H x W x D)
• 4.7” x 2.9” x 1.1” (120 mm x 74 mm x 28 mm)
Honeywell warrants this product, excluding battery, to be free from defects in the
workmanship or materials, under normal use and service, for a period of one (1) year
from the date of purchase by the consumer. If at any time during the warranty period the
product is determined to be defective or malfunctions, Honeywell shall repair or replace it
(at Honeywell's option).
If the product is defective,
(i) return it, with a bill of sale or other dated proof of purchase, to the place from which
you purchased it, or
(ii) call Honeywell Customer Care at 1-800-468-1502. Customer Care will make the
determination whether the product should be returned to the following address:
Honeywell Return Goods, Dock 4 MN10-3860, 1885 Douglas Dr N, Golden Valley,
MN 55422, or whether a replacement product can be sent to you.
This warranty does not cover removal or reinstallation costs. This warranty shall not
apply if it is shown by Honeywell that the defect or malfunction was caused by damage
which occurred while the product was in the possession of a consumer.
Honeywell's sole responsibility shall be to repair or replace the product within the terms
stated above. HONEYWELL SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF
ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES
RESULTING, DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY,
EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states
do not allow the exclusion or limitation of incidental or consequential damages, so this
limitation may not apply to you.
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON
THIS PRODUCT. THE DURATION OF ANY IMPLIED WARRANTIES, INCLUDING THE
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, IS HEREBY LIMITED TO THE ONE-YEAR DURATION OF THIS
WARRANTY. Some states do not allow limitations on how long an implied warranty lasts,
so the above limitation may not apply to you.
This warranty gives you specific legal rights, and you may have other rights which vary
from state to state.
If you have any questions concerning this warranty, please write Honeywell Customer
Relations, 1985 Douglas Dr, Golden Valley, MN 55422 or call 1-800-468-1502. In
Canada, write Retail Products ON15-02H, Honeywell Limited/Honeywell Limitée, 35
Dynamic Drive, Scarborough, Ontario M1V4Z9.
If you have any questions regarding your thermostat, please go to
http://yourhome.honeywell.com, or call Honeywell Customer Care toll-free
at 1-800-468-1502.
p
Battery replacement
3.
q
In case of difficulty
4.
Screen is blank. • Ensure two fresh AAA alkaline batteries are correctly installed.
Temperature
settings cannot be
changed.
• The System switch is off.
• You are setting the temperatures outside their allowable ranges:
• Heat: 40 °F to 90 °F (4.5 °C to 32 °C).
• Cool: 50 °F to 99 °F (10 °C to 37 °C).
Cool On is
flashing.
• The compressor protection delay has been activated. Cooling will
not be activated until the delay ends (maximum of five minutes).
HI appears on the
screen.
• The ambient (measured) temperature is above 122 °F (50 °C).
LO appears on the
screen.
• The ambient (measured) temperature is below 32 °F (0 °C).
E1 appears on the
screen.
• The temperature sensor circuit is opened. Replace the thermostat.
E2 appears on the
screen.
• The temperature sensor circuit is shorted. Replace the thermostat.
r
Technical Data
5.
;
Warranty
6.
Customer Assistance
7.
400-631-002-A (RTH221 User 69-2062EFS).book Page 2 Tuesday, June 5, 2007 2:23 PM
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