Uni-Line PERFECTSENSE PS3110 Series User manual

Programmable Thermostat
Owners Manual
Model: PS3110 Series
Congratulaons!
Your new thermostat will provide years of reliable service.
By saving energy, your thermostat will pay for itself during
its rst season of use. Thank you for buying our product!
Please read this manual for complete instrucons on
installing and operang your thermostat. If you require
further assistance, please feel free to contact us.
IMPORTANT INFORMATION
1. This thermostat is designed to work on the following
systems:
• Gas – Standing Pilot • Oil – Fired Furnace
• Gas – Electronic Ignion • Single Stage Heat Pumps –
with no auxiliary heat
• Gas – Fired Boilers • Electric Air Condioning
• Gas – Millivolt Systems • Electric Furnace
• Oil – Fired Boilers
This thermostat will NOT control mul-stage heat pumps
or 110/220V baseboard electric heang systems.
2. Temperature Range
This thermostat can be programmed between 45°F and 95°F
(7°C and 35°C). However, it will display room temperatures
from 30°F to 99°F (0°C and 37°C). HI will be displayed if
the temperature is higher than 99°F (37°C), and LO will be
displayed if the temperature is lower than 30°F (0°C).
This thermostat will automacally shut down in Heat
mode if the temperature rises above 95°F (35°C), and will
automacally shut down in Cool mode if the temperature
drops below 45°F (7°C).
3. Compressor Protecon
Aer shung o the cooling system, this thermostat has
a 4 minute delay before it can be restarted. This feature
will prevent damage to your compressor caused by rapid
cycling. It does not prevent a rapid compressor restart due
to short power outages.
4. Baery Warning
Two fresh AA alkaline baeries should provide over one
year of service. When the baeries need to be replaced.
The low baery indicator will ash on the display. When
you see this message, install new alkaline baeries. You
have approximately 1 minute to change the baeries and
keep the thermostat’s clock and program sengs. Once
the baeries have become too low to ensure proper
operaon, your system will be turned o, and the display
will be cleared except for ashing Low Baery Indicator on
the LCD display.
CAUTION: When only the Low Baery icon
ashes on the display, the thermostat is shut
down, and your system will no longer operate.
In this condion, there is no temperature control.
NOTE: The backlight will not funcon when the thermostat
is in low baery condion.
NOTE: If you plan to be away from the premises over 30
days, we recommend that you replace the old baeries
with new alkaline baeries prior to leaving.
FEATURES
Structure of thermostat and explanaon of the keypads
Up and Down Key. Used for
changing the Temperature
setting. Also used for increasing
and decreasing selections in the
Time, Program, and Span
functions.
LCD Display Shows
Time, Day, Temperature,
and other feature
information as required.
Battery Compartment
Front access allows
easy insertion of two
AA 1.5v batteries.
Front Door Battery cover Open with one nger from side lips.
Fan Switch used for Automatic
or Continuous fan operation.
Front Door. To open or close
the door by pressing it softly.
Hold/Return Key. Used for setting a
permanent (vacation)hold, and for returning
to the normal display from Day & Time setting,
Programming or Span setting modes.
Filter Key. Resets
lter change
counter to zero
Program Key. Used for
entering and modifying
Programs. Use with the Up
and Down keys to set
times and temperatures.
Press when in Clock setting
mode toselect between 12
and 24 hour clock modes.
System Switch
Selector switch for
Heat, Cool and O..
Day/Time Key
Used for entering
the Clock setting
mode. Use with the
Up and Down keys
to set the time and day.
Backlight Key
by Uni-Line®
OPERATION
Seng Day and Time
• The LCD will show this informaon
when baeries are rst installed.
The temperature will update aer a
few seconds.
• During me and day seng mode, the
temperature and program displays will go blank.
Refer to the Steps below.
STEP 1:
• Press to enter me and day seng
mode. The current hour and the AM/
PM indicator will be ashing.
• Press up or down to change the hour
to the current hour.
Note the AM/PM indicator, as the display will change at
12AM and 12PM.
STEP 2:
• Press again to change from hour
seng to minute seng. The current
minute will be ashing.
• Press up or down to change the
minute to the current minute.
STEP 3:
• Press again to change from minute
seng to day seng. The current day
will be ashing.
• Press up or down to change the day
to the current day.
STEP 4:
• Press again to change back to the
normal display.
NOTE: You may press at any me during day
and me seng to return to the normal display.
12Hr. / 24 Hr. Time Format
Your thermostat is set from the factory in normal 12
(AM/PM) me format. To change to 24 hour (military) me,
press during me and day seng mode to toggle
between the 12 hour and 24 hour formats. The AM / PM
indicator will not be displayed in 24 hour mode. Both the
current me and all programs will automacally change to
the selected format.
PROGRAMMING
The following me and temperature sengs are
pre-programmed into the thermostat:
Temperature in F° (C°)
Program Number Time Heat Cool
1 6:00 am 68°F(20°C) 78°F(26°C)
2 8:00 am 60°F(16°C) 85°F(29°C)
3 4:00 pm 68°F(20°C) 78°F(26°C)
410:00 pm 60°F(16°C) 82°F(28°C)
• All 7 days of the week have the same default programs.
Personal Program Schedule
• You can revise the factory programs to match your
own schedule. Use this Personal Program Schedule to
determine which mes and temperature sengs match
your comfort and energy saving requirements. Use a
pencil so you can revise your records each me you
change your program sengs.
Heang
Day Program 1 Program 2 Program 3 Program 4
Monday –
Friday
Time
Temp
Time
Temp
Time
Temp
Time
Temp
Saturday –
Sunday
Time
Temp
Time
Temp
Time
Temp
Time
Temp
Cooling
Day Program 1 Program 2 Program 3 Program 4
Monday –
Friday
Time
Temp
Time
Temp
Time
Temp
Time
Temp
Saturday –
Sunday
Time
Temp
Time
Temp
Time
Temp
Time
Temp
Revising Programs
• Familiarize yourself with manually changing programs,
so that you can easily modify the programs as your
comfort needs change. Follow the steps below to
change the program mes and temperature.
NOTE:
1) The program me can be set in 10-minute increments.
2) The program temperature can be set in increments of
1°F (1°C).
3) Aer 15 seconds without a key press, the thermostat
will return to normal display mode.
4) When seng the program me, note the AM / PM
indicator.
STEP 1:
• Slide the System Switch to the HEAT
or COOL posion to program the
corresponding system.
NOTE: If the System Switch is in the OFF posion, the last
posion used will be programmed.
STEP 2:
• Press to enter program mode. HEAT
or COOL will be displayed on the LCD.
STEP 3:
• The program hour and AM or PM indicator will
ash. Press to change the hour.
STEP 4:
• Press again to change to the minute
posion. The current minute will ash.
• Press to change the minute.
STEP 5:
• Press again to change to the program
temperature. The current program
will ash.
• Press to change the temperature.
STEP 6:
• Press again to move to the next program number.
• Repeat Step 3 through 5 to change the remaining
weekday and weekend programs. (There are a
total of 8 programs.)
• Aer cycling through all 8 programs, press
again to return the display to normal.
• Press at any me to exit the program mode.
Reviewing Programs
To review your program sengs, press repeatedly to
cycle through the programs. You also can make changes at
any me.
System Selector Switch
The System Selector switch on the front of the thermostat
determines the operang mode of the thermostat. You may
select COOL, OFF, or HEAT.
NOTE: Anyme you install or remove the thermostat from
the wallplate, slide the System Selector to the OFF posion
to prevent rapid system On-O.
Fan Switch
The fan switch should normally be set in the AUTO
posion. The fan will be turned on during normal
operaon of your system. In a normal gas or oil
furnace, the fan will be turned on by your furnace aer its
warm-up delay. For electric heat, air condioning, and heat
pump operaon, the fan will turn on with the system.
To run the fan connuously, slide the Fan switch to the ON
posion.
Temporary Manual Override
To temporarily change the current set
temperature without aecng your program:
• Press and hold for about 1 second to
enter Manual Override mode. When
display ashes, you can release the key.
• Press again to change to your desired set
temperature. Hold the key for 2 seconds to
fast-advance set temperature.
• Press to return to normal mode, or wait 5 seconds for it
to return automacally.
• The current program number will ash to signify the
temporary override.
• At the next program change me, the temporary
override is canceled, and the next program temperature
becomes the setpoint temperature.
• Press, then press again. This will
return the set temperature to the
current program set temperature.
Permanent Override or a Designated Day Override
To hold your manual override for
vacaon or unl a designated day.
• Press to make the current program
temperature the HOLD temperature. HOLD
will be displayed on the LCD, and the program
number will disappear.
• Follow the Temporary Manual
Override instrucons above to
change the Permanent Manual
Override temperature.
• You can conrm the held set temperature by pressing for
less than 1 second.

• Press again. Hold day will be displayed on the LCD
and the clock will disappear
• Press day key to add override days. Press Program
key to reduce override days.
• Follow the Temporary / Designated Day Override
instrucons above to change the Permanent
Manual Override temperature.
To End Override:
• Under Permanent Override press hold/return key
twice. Under a Designated Day Override press
the hold once. The thermostat will return to the
current program, and the HOLD display will be
canceled.
Filter Change Indicator
Your thermostat also keeps a record of the number
of hours your lter has been in use. To maximize your
system’s performance and energy eciency, change or
clean your lter regularly.
• When the total system runme for
heat and cool reaches 400 hours, FILT
will alternate with the current me on
the LCD display to remind you to clean
or change your system’s lter. FILT will
connue to ash unl the counter is
set back to zero.
• Press to review total lter usage.
The display will blink FILT, then show
the lter monitor counter. Aer 15
seconds, the display will return to normal mode.
In this example, the counter is at 410 Hours,
26 Minutes.
• Aer changing or cleaning the system lter, press
and release the Filter Buon. The usage hours
will display on the screen. Reset the display by
pressing and holding the Filter Buon again unl
the hours displayed are zero (0).
DIFF Seng
Your thermostat is set at the factory to cycle at 2°F (1°C)
above and below the set temperature (DIFF = 2). This
seng has been designed to provide a comfortable room
temperature under most condions. However, if you nd
your system cycling too oen, the DIFF can be adjusted to
modify the cycle me.
• Press and hold BOTH up and down keys for three
seconds. The display will ash, and DIFF will be
displayed on the LCD.
• Press the up key to raise the DIFF to 3. This seng
INCREASES to cycle me by allowing your system
to run LONGER.
• Press the down key to lower the DIFF to 1. This
seng DECREASES the cycle me by causing your
system to run SHORTER.
The DIFF sengs remain the same for both HEAT and
COOL. The DIFF can be changed at any me and is
independent of program mes or temperatures. When
baeries are installed in the thermostat, the DIFF is reset
back to Seng 2.
Backlighng
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 aer 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 Baery warning
condion, the backlight will not operate. Replace with 2
new AA alkaline baeries to restore the backlight funcon.
Low Baery Warning
Your thermostat has a two-stage low baery
warning system. When the baeries are rst
detected to be weak, the rst stage low baery
warning is indicated by a baery symbol
ashing on the LCD display. At your earliest
convenience, you need to replace the baeries
with 2 new AA alkaline baeries.
When the baeries become too weak for
normal operaon, the thermostat enters the second stage
low baery warning which shuts down the thermostat.
In this condion, BATT ashes alone on the display, and
the thermostat will turn your system o. Your system will
remain shut o unl the baeries are replaced.
Note: The thermostat will sll keep the current set
temperature and lter run me in memory unl new
baeries are installed. Aer conrming that new baeries
have been inserted, the thermostat will return to normal
operaon.
Auto Recovery
Auto Recovery calculates how early to turn
your system back on, so the room temperature
is comfortable by the start of the comfort
temperature program period. Auto Recovery
works in both heat and cool modes.
• When the thermostat is in Auto Recovery mode, the
display will alternate RECO with the me, and the
program indicator will ash.
• 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 operaon.
• Auto Recovery can be canceled manually if HOLD/
RETURN is pressed during the recovery process.
• Auto Recovery will be canceled and the thermostat will
change to next period.
Error Mode
If the thermostat is unable to control your
system due to a baery problem, the
thermostat will enter Error Mode. In this
condion, the thermostat ashes E1 or E2 on
the LCD display, and shuts o your system. To
correct this problem, replace the baeries with
2 new AA alkaline baeries, even if you have
recently replaced them. Remove the baery, hold any key,
then replace the baery again. You will need to reprogram
your thermostat and conrm normal operaon.
If Error Mode returns, please contact us for further
informaon.
LCD Display Informaon LCD Display Informaon
E1 Sensor error E2 System switch error
Auto Cut O
Your thermostat will automacally shut down in Heat
mode if the room temperature rises above 95°F (35°C).
It will shut down in Cool mode if the room temperature
drops below 45°F (7°C).
Note: If your system has malfunconed and no longer
responds to thermostat controls, the Auto Cut-O will have
no eect.
Mechanical Heat Backup
This thermostat includes a bimetal switch that will
automacally turn on the heat when the temperature
reaches about 41°F (5°C).
WARNING: This switch only acvates the heang terminal
(W). The system itself must be capable of automacally
turning the fan on. Without normal fan operaon, severe
damage to the heang system could result.
Selector Switches
In order for this thermostat to control your system, the
system type must be specied by the selector switches
on the printed circuit board inside the thermostat. There
is also a selector switch for your choice of Fahrenheit or
Celsius temperature display.
• F° / C° selector (Fahrenheit / Celsius)
Your thermostat is set for F° from the factory. In order to
change to C°, slide the switch to C°, remove the baeries,
wait for about 1 minute, then replace the baeries.
NOTE: You must press and hold any key about 2 seconds
when the baeries is out, then replace the baery or the
thermostat will not change temperature mode and all
programs and sengs will be lost.
• Heang System Selector (HG – HE switch)
The factory posion for this switch is in the HG posion.
Leave it in this posion if you have a gas furnace or an oil
burner. If you have an electric furnace, test to see whether
the heat and fan come on as expected aer installaon.
If the fan operaon is normal, leave it in the HG posion.
If the fan does not come on within a minute of the
thermostat calling for heat, change the switch posion to
HE. The system selector has no eect in the cooling mode.
NOTE: HG posion is for gas and most other systems. HE
posion is for certain electric systems having a fan relay.
• System Selector (STANDARD – HEAT PUMP switch)
The factory posion for this switch is in the STD posion.
Leave it in this posion if you have ANY system that uses
gas, oil, electric, or hot water heang. If you have a single
stage heat pump (no auxiliary or emergency heat source),
then slide the switch to the HP posion. Be sure the
reversing valve wire is connected to the correct terminal
for your heat pump (Y/O) or (W/B).
• Auto Recovery Selector (DISABLE/ENABLE)
Your thermostat is set from the factory with the Auto
Recovery Feature enabled, which complies with the
EPA ENERGY STAR Program. If you prefer to use normal
recovery, slide the switch to the DISABLE posion.
INSTALLATION
What You Need
This thermostat includes two #8 sloed screws and two
wall anchors for mounng. To install your thermostat, you
should have the following tools and materials.
• Sloed screwdriver(s)
• Small Philips screwdriver
• Hammer
• Electric drill and 3/16” bit
• Two 1.5V (AA) size alkaline baeries (included)
Remove Old Thermostat
CAUTION: Do not remove any wiring from exisng
thermostat before reading the instrucons carefully.
Wires must be labeled prior to removal.
IMPORTANT! Turn o the power to the furnace at the
main power panel or at the furnace.
Remove exisng thermostat cover and thermostat. See
Figure 1. Some thermostats will have screws that must rst
be removed. Once the wall mounng plate is exposed, look
for wires. If wires are not visible, they may be connected to
the back of the wall plate. Again, look for screws, tabs, etc.
Some models have doors that open to expose wires and
mounng screws. See Figure 1.
Typical Home Thermostats
Figure 1.
Wiring Labeling
• Each wire coming from the wall to the exisng
thermostat is connected to a terminal point on that
thermostat. Each of these terminal points is usually
marked with a code leer as shown in Table A below.
• Note that this thermostat has mulple funcon terminals
that allow single stage heat pump capability. Standard
systems use: Rh, Rc, G, Y, W. Single stage heat pumps
use: R, Y, G, and O or B. Table A below shows the mulple
funcons of the terminals. Use the terminals that match
your system.
• The number of wires in your system can be as few as two
(for heat only systems), as many as eight, or any number
in between. If you follow the labeling procedures
correctly, you do not have to be concerned about how
many wires there are.
• There is oen no terminal marking
on the exisng thermostat of
two wire, heat only systems. Just
connect either of the wires to the
RH terminal, then connect the
other wire to the W terminal to
complete the circuit.
• IMPORTANT! BEFORE DISCONNECTING ANY WIRES,
APPLY THE SELF-ADHESIVE LABELS PROVIDED TO THE
WIRE AS SHOWN IN TABLE A BELOW. For example,
aach the label marked W to the wire that goes to the W
or H terminal on your exisng thermostat. IGNORE THE
COLOR OF THE WIRES since these do not always comply
with the standard.
• Aer labeling wires, disconnect them from the exisng
thermostat.
• Remove exisng wall plate. To make sure wires do not fall
back into wall opening, you may want to tape them to
the wall.
• If hole in wall is larger than necessary for wires, seal this
hole with insulang material so that no hot or cold air
can enter the back of the thermostat from the wall. This
air could cause a false thermostat reading.

Table A
If the code leer
on your exisng
Thermostat is:
Then mark the
wire with
label shown
And connect
to thermostat
terminal shown
Y, C or M
Air Conditioning Compressor
- or -
O
Reversing Valve operating in Cool mode.
(Single Stage Heat Pumps ONLY)
W or H
Heating
- or -
B
Reversing Valve operating in Heat mode.
(Single Stage Heat Pumps ONLY)
Y1
Heat Pump Compressor
(Single Stage Heat Pumps ONLY)
G or F
Fan
RC, VC
24 Volt Cool
RH, R, VR or 4
24 Volt
NOTE: Do not connect a Common wire (somemes labeled
C) to any terminal on this thermostat. Tape up the wire and
do not use. This wire provides electricity to non-baery
powered thermostats.
Mount Wallplate and Thermostat
• Remove the wall plate from your thermostat by pressing
the release tab on the boom of the thermostat. See
Figure 2.
Figure 2.
• Posion wallplate on wall and pull exisng wires through
large opening. Then level for appearance. Mark holes for
plasc anchors provided if your exisng holes do not line
up with those on the wall plate.
• Drill holes with 3/16” bit and gently tap anchors into the
holes unl ush with wall.
• Reposion wallplate to wall, pulling wires through large
opening. Insert mounng screws provided into wall
anchor and ghten. See Figure 3.
Figure 3.
NOTE: 5-Wire Systems
If your thermostat has one wire marked R or Rh (2, 3,
or 4-wire system), then leave the jumper wire between
the Rh and Rc terminals on the wallplate. Otherwise, if
you have separate Rh and Rc wires (5-wire system), then
remove the jumper wire between the Rh and Rc terminals.
Connect Wires and Mount Thermostat to Wallplate
• Match and connect the labeled wires to the appropriate
coded terminal screws on the wallplate. (See Figure
4 and 5.) Ignore any wires which may be present, but
which were not connected to the old thermostat.
• Refer to the Wiring Diagrams below to be sure your
system is wired correctly.
• If your system is a single stage heat pump and uses an
O or B wire, you must move the System Selector switch
inside the thermostat to the heat pump (HP) posion.
If you have a normal furnace or electric system, leave
the switch in the Standard (STD) posion. Refer to the
System Selector secon for more informaon on this
switch.
• Be sure to ghten the terminal screws securely,
otherwise a loose wire could cause operaonal problems
with your system or thermostat.
• Push excess wires back into the hole to prevent
interference when installing the thermostat to the
wallplate.
• Make sure the System switch is set to OFF, and the Fan
switch is set to AUTO.
Two Year Limited Warranty
Robertshaw warrants to the original contractor installer or
to the original consumer user that each new PerfectSense
Product shall be free from defects in materials and
workmanship 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, Robertshaw shall, at its sole opon, repair or
replace the Product, provided that the Product is returned
to Robertshaw facility or designated agent within the
Warranty Period, with transportaon charges prepaid, and
that the Product, upon examinaon by Robertshaw, is found
to conform to this warranty. The above warranty does not
apply to: i) baeries; ii) improper installaon; 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 Robertshaw recommendaons and/or
instrucons. Any and all costs of labor, thermostat removal,
or reinstallaon 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 ROBERTSHAW BE LIABLE TO CONSUMER,
CONTRACTOR OR ANY THIRD PARTY FOR ANY
CONSEQUENTIAL, INCIDENTAL, 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
ROBERTSHAW HAS BEEN ADVISED OF THE POSSIBILITY
OF SUCH DAMAGES.
TROUBLESHOOTING
Problem Soluon
No display 1. Check baery connecons and
baeries.
2. Remove the baery and wait for
about 1 minute, then replace
baeries.
Enre display dims 1. Replace baeries.
Auto fan does not
turn on properly
1. Move HG/HE selector to correct
posion.
Heang or cooling does
not go on or o
1. Check that the System switch is
in the correct posion (HEAT or
COOL).
2. There may be as much as a
4-minute delay before the
system turns on – wait and check
(Compressor protecon delay).
3. Check your circuit breakers
and switches to ensure there is
power to the system.
4. Replace baeries.
5. Make sure your furnace blower
door is closed properly.
6. If your non-heat pump system
only uses 4 wires, be sure the
jumper wire is installed between
the Rh/B and Rc/O terminals.
7. Check the posion of the System
selector switch: Standard or Heat
Pump.
8. If you have single stage heat
pump, be sure the jumper wire
is installed between the Y and W
terminals.
Errac display 1. Remove the baery, hold any
key then replace the baery.
Reprogram.
Unit connues to operate
in the OFF posion
1. Replace unit.
Thermostat permanently
reads HI, LO, or Er
1. Replace unit.
If you experience any other problems, contact Technical Support
service at: [email protected] or [phone].
Customer Service Telephone [phone]
Customer Service Facsimile 1.800.426.0804
[email protected]
Robertshaw®, Uni-Line® and PerfectSenseTM are trademarks of Robertshaw,
its subsidiaries and/or affiliated companies. All other brands mentioned
may be the trademarks of their respective owners.
For Technical Service
Telephone [phone]
[email protected]
www.uni-line.com
www.robertshaw.com
©2015 Robertshaw
10/15 – 352-00239-001
• Insert the boom tabs on the thermostat body into the
slots at the boom of the wallplate. Press the top of the
thermostat body to snap it into the wallplate. Refer to
Figure 6.
NOTE: Do not force the thermostat onto the wallplate,
as the terminal pins may be damaged. If it does not snap
properly, the thermostat may not work.
• Insert the two AA size alkaline baeries, observing the
polarity marked inside the baery compartment.
• Switch on the main power at the panel or furnace.
Figure 4. Figure 5.
Figure 6.
Wiring Diagrams