Perfect Sence PS2110 Series User manual

Digital Thermostat
Owners Manual
Model: PS2110 Series
Your new thermostat will provide years of reliable service
and will create uniform comfort in your home through the
seasons. Thank you for buying the 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 Furnace
• Gas – Millivolt Systems • Electric Air Condioning
• 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 set 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
This thermostat provides a 4 minute delay aer shung
o the compressor 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 well over
one year of service. However, when the baeries become
weak the Low Baery Indicator will ash on the display.
When this message occurs, install new alkaline baeries.
You have approximately 1 minute to change the baeries
and keep the thermostat’s sengs. Once the baeries
have become too weak to ensure proper operaon, your
system will be turned o, and the display will be cleared
except for a ashing Low Baery Indicator on the LCD
display.
CAUTION: When only the 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.
by Uni-Line®
FEATURES
Structure of thermostat and explanaon of the keypads
OPERATION
Start-up
The LCD will show the factory default
display of 70°F (21°C) when baeries
are rst installed. The temperature will
update aer a few seconds.
System Switch
The System 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 switch to the OFF posion
to prevent the possibility of a rapid system On – OFF.
Fan Switch
The Fan switch should normally be set in
the AUTO posion. The Fan will turn on
during normal operaon of your system.
In a normal gas or oil furnace, the Fan
will turn aer the furnace warms up. 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.
Review Current Set Temperature
• Press either the up or down key once to see the Set
Temperature.
The factory default is 68°F (20°C) when started with the
System switch on O or Heat, and 78°F (26°C) when
started with the System switch on Cool.
Seng New Temperature
• Press either up or down once to
display the set temperature.
• Press either up or down again
to change to your desired Set
Temperature. Hold the key down for over 2 seconds to
fast advance the Set Temperature.
The display will return to the normal room temperature
aer the keys have been released for 5 seconds.
Filter Monitor
The thermostat counts the number
of hours your system’s 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, the Filter Change Indicator will ash as a
reminder to check your system’s lter.
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).
Note: Pressing the Filter key at any me for less than 3
seconds will cause the Filter Change Indicator to appear
on the LCD. This is only to conrm key operaon. The
counter is not aected unless the key is held for 3 seconds
or longer.
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 fast or too slow, then the DIFF can
be adjusted to modify the cycle me.
• Press and hold BOTH up and down keys for three
seconds. DIFF will be displayed on the LCD.
• Press up to raise the DIFF to 3. This seng
INCREASES the me between cycles by
allowing your system to run LONGER.
• Press down to lower the DIFF to 1. This
seng DECREASES the me between cycles
by causing your system to run SHORTER.
The DIFF sengs remain the same for both HEAT and
COOL, and can be changed in any System Switch posion.
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 7 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 the 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. 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, the baery symbol ashes
alone on the display and the thermostat will turn your
system o. Your system will remain 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.
Error Mode
If the thermostat is unable to control
your system due to an unexpected
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. Next, 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 call 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 that 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.

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. Some
thermostats will have screws or other locking devices 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 wallplate. 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.
• Note 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 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 PROVIDED SELF-ADHESIVE LABELS TO THE
WIRE AS SHOWN IN TABLE A. (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 wallplate. To make sure wires do not
fall back into wall opening, you may want to tape them
to the wall.
• If the hole in the 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 could cause a false thermostat reading.
Table A
If the code Then mark the wire And connect to
leer on your exist- with label shown thermostat terminal
ing thermostat is: shown
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 it. This wire provides electricity to non-baery
powered thermostats.
Mount wallplate and Thermostat
• Remove the wallplate 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 wallplate.
• 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 Figures
4 and 5. Ignore any wires which may be present, but
which were not connected to the old thermostat.
Figure4 Figure 5
• 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 posion. If
you have a normal furnace or electric system, leave
the switch in the Standard posion. Refer to the Wiring
Diagrams and System Selector secon below 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 wire 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.
• Insert the tabs on top of the thermostat body into the
slots at the top of the wallplate. Snap the boom of the
thermostat body into the boom of the wallplate. Refer
to Figure 2. (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.
Wiring Diagrams
X-No Connecon

Selector Switches
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. See Figure 6.
• Heang System Selector (HG – HE switch)
The factory posion for this switch is 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 is for gas and
most other systems. HE 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 (Rc/O) or (Rh/B).
• F° / C° selector (Fahrenheit - Celsius switch)
Your thermostat is set for F° mode from the factory.
To change to C° mode, slide the switch to C° and hold
any key for 2 seconds with the baery removed, then
replace the baery.
Figure 6
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, 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
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 –352-00237-001