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• Auto Recovery can be disabled by sliding the Recovery
switch on the circuit board to disable.
• Auto Recovery will not operate if Permanent Hold or
Temporary Hold is in operation.
• Auto Recovery can be canceled manually if HOLD is
pressed during the recovery process. If a recovery
process is canceled manually then the recovery process
will not start again until the next program period starts
(an exception is that if time or program is changed then
the thermostat will check Auto Recovery conditions
immediately).
• Auto Recovery will be canceled and change to next
period.
• Auto Recovery will be canceled and change to Home
Today mode if HOME TODAY is pressed during the
recovery process.
Keyboard lock
The keyboard can be locked to prevent
unauthorized changes to the thermostat.
To lock or unlock the keyboard, press and hold
hold/run key for 3 seconds. The keyboard is locked
when LOCK appears on the display.
• When all keys are locked, LOCK will appear on the
display for 1 second any time a key is pressed.
Backlighting
Your thermostat has an electroluminescent lamp that
backlights the display for easy viewing in the dark. When
any key is pressed the display is illuminated.
The display will remain illuminated for 8 seconds after the
last key is pressed. This allows the light to stay on if you
need to operate several keys.
NOTE: If the thermostat is in Low Battery warning
condition, the backlight will not operate. Replace with 2
new AA alkaline batteries to restore the Backlight function.
Low Battery Warning
Your thermostat has a two-stage lower battery
warning system. When the batteries are first
detected to be weak, the first stage low battery
warning is indicated by BATT flashing on the
LCD display. Replace the batteries with 2 new
AA alkaline batteries.
When the batteries become too weak for normal operation,
the thermostat enters the second stage low battery warning
which shuts down the thermostat. In this condition, BATT
flashes alone on the display, and the thermostat will turn
your system off. Your system will remain off until the
batteries are replaced.
NOTE: The thermostat will still keep the current Set
Temperature and Filter run time in memory until new
batteries are installed. After confirming that new batteries
have been inserted, the thermostat will return to normal
operation.
Error Mode
If the thermostat is unable to control your
system due to an unexpected battery problem,
the thermostat will enter Error Mode. In this
condition, the thermostat flashes E1, E2, E3
or E4 on the LCD display, and shuts off your
system. To correct this problem, replace the
batteries with 2 new AA alkaline batteries, even
if you have recently replaced them. Press the reset
button once with a small pin and hold for two seconds
then reprogram.
If Error Mode returns, please contact us for further
information.
Warning Mode
If the Malfunction Input (L) from the heat pump
is active, the thermostat flashes E5on the LCD
display.
Auto Cut Off
Your thermostat will automatically shut down in Heat mode
if the room temperature rises above 95ºF (35ºC). It will shut
down in Cool mode if the room temperature drops below
40ºF (4ºC).
Note that if your system has malfunctioned and no longer
responds to thermostat controls, the Auto Cut-Off will have
no effect.
TROUBLESHOOTING
Problem
Solution
SCRAMBLED OR
1. Remove clear mylar sticker.
DOUBLE DISPLAY
(numbers over numbers)
NO DISPLAY
1. Check battery connections and batteries.
2. Press the reset button once with a small pin
and hold for two seconds then reprogram.
ENTIRE DISPLAY DIMS
1. Replace batteries.
PROGRAM DOES NOT
1. Check that the time is set properly to AM or
CHANGE AT YOUR
PM.
DESIRED SETTINGS
2. Check that the thermostat is not in HOLD
or Home Today mode.
3. Check for the correct day settings.
AUTO/FAN DOES NOT
1. Move Elec/Gas selector to opposite position.
TURN ON
2. The thermostat may be in Auto mode. Look
for AUTO on the LCD display. If the heat or
cool program temperatures are close, the
thermostat requires a larger temperature
change before switching systems.
3. There may be as much as 4 minute delay
before the heat or cool system turns on. Wait
and check. (Compressor protection delay)
4. Check your circuit breakers and switches to
ensure there is power to the system.
5. Replace batteries.
6. Make sure your furnace blower door is closed
properly.
7. Check the position of the Furnace or Heat
Pump selector switches: Normal/O/B.
1. Press the reset button once with a small pin
ERRATIC DISPLAY
and hold for two seconds then reprogram.
1. Replace unit.
UNIT CONTINUES TO
OPERATE IN THE OFF
POSITION
1. Replace unit.
THERMOSTAT
PERMANENTLY READS E1,
E2, E3, E4
If you experience any other problems, contact Technical Support at:
www.invensyscontrols.com or (800) 445-8299
Two Year Limited Warranty
Invensys Controls warrants to the original contractor installer
or to the original consumer user that each new Robertshaw
Product shall be free from defects in materials and workman-
ship under normal use and service for a period of two (2)
years from the date of manufacture ("Warranty Period").
If any Product fails within the applicable Warranty Period,
Invensys Controls shall, at its sole option, repair or replace
the Product, provided that the Product is returned to
Invensys Controls' facility or designated agent within the
Warranty Period, with transportation charges prepaid, and
that the Product, upon examination by Invensys Controls, is
found to conform to this warranty. The above warranty does
not apply to: i) batteries; ii) improper installation; iii) Products
that have been damaged, misused, neglected, mishandled,
or altered in any manner whatsoever, and/or; iv) defects or
damage that result from use of the Product in other than its
normal and customary manner or in any manner not in
accordance with Invensys Controls' recommendations
and/or instructions. Any and all costs of labor, thermostat
removal, or reinstallation are not covered under this warranty
and shall be the sole responsibility of the consumer or
installer, as applicable.
THE FOREGOING WARRANTY IS IN LIEU OF AND
EXCLUDES ALL OTHER WARRANTIES, WHETHER VERBAL
OR WRITTEN, EXPRESS OR IMPLIED INCLUDING, EXCEPT
TO THE EXTENT PROHIBITED BY APPLICABLE LAW, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
SHALL INVENSYS CONTROLS BE LIABLE TO CONSUMER,
CONTRACTOR OR ANY THIRD PARTY FOR ANY
CONSEQUENTIAL, INCIDENTIAL, SPECIAL OR PUNITIVE
DAMAGES ARISING FROM OR RELATING TO USE OF THE
PRODUCT INCLUDING, BUT NOT LIMITED TO, LOSS OF
GOODWILL, LOSS OF PROFIT OR REVENUE, AND
PROPERTY DAMAGE, REGARDLESS WHETHER SUCH
LOSS OR DAMAGE IS BASED IN CONTRACT, WARRANTY,
TORT, NEGLIGENCE, STRICT LIABILITY, INDEMNITY,
PRODUCT LIABILITY, OR OTHERWISE AND EVEN IF
INVENSYS CONTROLS HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
191 E. North Avenue
Carol Stream, Illinois 60188
www.invensyscontrols.com
©2008 Invensys Controls
352-00021-004 Rev B 5/08
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