Honeywell RLV4300 User manual

Owner’s Manual
Read and save these
instructions.
For help please visit
yourhome.honeywell.com
R LV4 3 0 0
5-2 Programmable
Thermostat
Application
This thermostat is designed to control an electric heating system such as a baseboard
heater, a radiant ceiling, a convector or a fan-forced heater.
The thermostat CANNOT be used with:
• a resistive load under 1.25 A
• a resistive load over 12.5 A
• a system driven by a contactor or a relay (inductive load)
• a central heating system.
WARNING Electrical Shock Hazard.
This thermostat is a line voltage control (120–240 Volts). Do not install it if you are
not completely familiar with house wiring. If handled improperly, there is risk of
electric shock hazard, which may cause serious injury or death.
Do you need assistance? We are here to help.
Call 1-800-468-1502 for wiring assistance before returning the
thermostat to the store.

2
ATTENTION: MERCURY RECYCLING NOTICE
This product does not contain mercury. However,
this product may replace a product that contains
mercury. Mercury and products containing
mercury should not be discarded in household
trash.
For more information on how and where to
properly recycle a thermostat containing
mercury in the United States, please refer to the
Thermostat Recycling Corporation at
www.thermostat-recycle.org.
For mercury thermostat recycling in Canada,
please refer to Switch the Stat at
www.switchthestat.ca
NO MERCURY
Hg
SUPPLIED PARTS
• One (1) thermostat
• Two (2) 6-32 mounting screws
• Two (2) solderless connectors
Installation
TURN OFF POWER TO THE HEATING SYSTEM AT THE MAIN
POWER PANEL TO AVOID ELECTRICAL SHOCK.
• All cables and connections must comply with local electrical codes.
• This thermostat has tinned copper wires for line and load connections.
• Special CO/ALR solderless connectors must be used if these wires will be
connected to aluminium conductors.
• Install the thermostat onto an electrical box.
• Install the thermostat about 5 ft. (1.5 m) high, on an inside wall facing the
heater.
• Avoid locations where there are air drafts (such as the top of a staircase or
an air outlet), dead air spots (such as behind a door), or direct sunlight.
• Do not install the thermostat on a wall that conceals chimney or stove pipes.
• The thermostat wires are not polarized; either wire can be connected to the
load or to the power supply.

3
Wiring
Connect the thermostat wires to the heating system (load) and to the power
supply using solderless connectors for copper wires.
4-wire Installation2-wire Installation
Mounting the thermostat
Loosen the screw underneath the thermostat and separate the
faceplate from the wallplate.
NOTE: The screw remains captive and cannot be completely
removed.
Mount the wallplate to the electrical box using the provided
screws. Insert the screws through the two left or the two right
mounting holes of the wallplate. Reinstall the faceplate onto the
WARNING
Keep the thermostat’s air vents clean and free
from obstructions.
wallplate and tighten the screw underneath the thermostat.
NOTE: If there is a protective film or sticker on the
thermostat’s screen, peel it off.
Apply power to the heating system. Verify the installation by
checking that the heating system can be turned On by raising
the setpoint using the Up button or turned Off by lowering the
setpoint using the Down button.

4
Controls
Day button
Hour button
Minute button
Program button
Return button
Mode button
Pull cover down
Screen
Up/Down buttons
Advanced setup
Display
Time and day
Appears when the
setpoint is displayed
Temperature
Economy mode
Manual mode
Automatic mode
Heating intensity indicator
Appears when power to
the thermostat is cut off
Appears when the
clock has been reset
Appears when the
thermostat is configured
for a fan-forced heater

5
Automatic mode
To place the thermostat in Automatic mode, press the Mode button
until Auto appears on the screen. The current period number also
appears.
In this mode, the thermostat follows the programmed schedule.
You can program up to 4 periods in a day. You can set 2 different
programs: one for the weekdays (Monday to Friday) and another one
for the weekend (Saturday and Sunday).
By default, the thermostat is programmed with the following schedule:
Monday to Friday Saturday & Sunday
Period Start Time Temperature Start Time Temperature
1 Wake 6:00 21.0°C (70°F) 6:00 21.0°C (70°F)
2 Leave 8:00 16.5°C (62°F) --:-- - -
3 Return 18:00 21.0°C (70°F) --:-- - -
4 Sleep 22:00 16.5°C (62°F) 22:00 16.5°C (62°F)
Temporary Override
You can temporarily override the current temperature using the Up or Down
button. The new setpoint will be used until the end of the current period. During
the override, Auto flashes on the screen.
Clock and day setting
The clock must be set when Time appears on the screen.
1. Pull the cover down.
2. Press the Day button to set the day.
3. Use the Hour and Min buttons to set the clock.
4. Press the Ret button to exit.
Temperature display and setting
The thermostat normally displays the room (measured) temperature.
• To display the set temperature (setpoint), press the Up or Down button once.
The setpoint temperature will remain on the screen for 5 seconds.
• To change the setpoint temperature, press the Up or Down button repeatedly
until the desired temperature is displayed.
• The screen is backlit for 12 seconds when any button is pressed.

6
Manual mode (permanent override of schedule)
To place the thermostat in Manual mode, press the Mode button until
Man appears on the screen. In this mode, any modification to the
temperature must be done manually. Press the Up or Down button to
set the temperature. The default setting is 21°C (70°F).
Economy mode
To place the thermostat in Economy mode, press the Mode button
until Econo appears on the screen. This mode is ideal for weekend
residences (cottages) as it can be used to keep the temperature at an
economy level during most of your absence and raise the temperature
to a comfortable level by your usual arrival time. If you do not show up
at your cottage, the temperature will return to the economy level until
the following weekend.
Automatic mode (continued)
To modify the schedule:
1. Press the Mode button until Auto appears on the screen.
2. Press the Pgm button. Period 1 of the weekday (Monday to Friday) program
is displayed.
3. To display another period, press the Pgm button.
4. To toggle between the weekday (Mon to Fri) program and the weekend (Sat
& Sun) program, press the Day button.
5. Press the Hour and Min buttons to set the start time of the displayed period.
NOTE: To cancel the period, press the Mode button. The thermostat will display --:--.
During operation, the thermostat will skip over that period.
6. Press the Up or Down button to set the temperature of the displayed period.
7. Repeat steps 3 through 6 to set another period.
8. Press the Ret button to end programming.

7
Economy mode (continued)
The Economy mode has two periods which you can set as follows:
Period Temperature Start Time
1Set to a comfortable level
(e.g., 22°C).
Set the day and time that you want the temperature to
start rising so that the comfortable level is reached by
the time you arrive (e.g., Friday at 3:00 pm).
2Set to a comfortable level
(e.g., 22°C).
Set the day and time that you want the temperature to
start dropping to the economy level if you do not show
up (e.g., Friday at 8:00 pm).
The Economy mode can be used as follows:
• Place the thermostat in Economy mode during your absence.
• When you arrive, place the thermostat in Automatic mode or in Manual mode
before the temperature drops to the economy level.
• When you leave, switch the thermostat back to Economy mode.
To program the two periods of the Economy mode:
1. Press the Mode button until Econo appears on the screen.
2. Press the Pgm button. Period 1 is displayed.
3. Press the Day button to set the start day of the displayed period.
4. Press the Hour and Min buttons to set the start time of the displayed period.
5. Press the Up or Down button to set the temperature.
6. Press the Pgm button to select Period 2.
7. Repeat steps 3 through 5 to set Period 2.
8. Press the Ret button to end programming.
Temporary Override
You can temporarily override the current temperature using the Up or Down
button. The new setpoint will be used until the end of the current period. Econo
flashes during the override.
Power outage
During a power outage, the thermostat display remains lit for the first 2 minutes.
During this time, the LP (low power) indicator appears and all buttons are
disabled. Then the screen turns blank. The settings are stored in memory.
When power returns, the thermostat returns to the mode of operation preceding
the power outage. If the power failure has exceeded 5 hours, the clock and
date must be re-adjusted.

8
Advanced settings
1. Pull the cover down.
2. Briefly insert a pointed object (e.g., paperclip) through the advanced setting
opening. The first parameter will appear.
3. To display the next parameter, press the Mode button.
4. To modify a parameter, press the Up or Down button.
5. To exit the menu, press the Ret button or do not press any button for
1 minute.
Parameter and options
Display and
Default Setting
Parameter and
options
Display and
Default Setting
Temperature display format
• °C / °F
Time display format
• 24 h / 12 h
Early Start *
• OF (Off) / On
Automatic Daylight
Saving Time **
• OF (Off) / On
Year ***
• 00 - 99
Month ***
• 1 - 12
Day ***
• 1 - 31
Cycle length ****
• Std / Fan
* Early Start is used in Automatic mode only. When Early Start is enabled (On),
the thermostat determines when to start heating so the desired temperature be
reached at the beginning of periods 1 and 3. When Early Start is disabled (Off),
heating does not start in advance, and therefore the desired temperature will not
yet be reached at the beginning of these periods.
** When Automatic Daylight Saving Time is enabled (On), the thermostat auto-
matically switches to daylight saving time on the second Sunday of March and
to normal time on the rst Sunday of November.
*** Available only if Daylight Saving Time is enabled (On).
**** Generally set to 15-second cycle (Std) as it provides better temperature
control. However, set to 5-minute cycle (Fan) if you have a fan-forced heater to
prevent premature fan motor burnout. Fan appears on the thermostat’s screen
when 5-minute cycle is selected.

9
Troubleshooting
Problem Solution(s)
Thermostat’s
housing is hot.
This condition is normal. Ensure that the heater capacity does not exceed the
thermostat’s maximum load.
Wrong temperature
is displayed.
Correct it if any of the following situations exists:
• The thermostat is exposed to an air draft.
• The sticker on the thermostat’s screen has not been removed.
• The thermostat is located near or above a heat source such as a light dimmer
Wrong time is
displayed.
The time is not yet set or the thermostat was without power for more than 5
hours.
Temperature
does not change
according to the
programmed
schedule.
• Ensure the thermostat is in Automatic mode.
• Check the clock and the schedule. If the thermostat is congured for
12-hour format, ensure that PM appears on the screen when afternoon times
are displayed.
LP appears on the
screen or the screen
is blank despite
there is no power
outage.
The thermal circuit breaker in the heater is opened. This can happen if the
heater is obstructed by furniture or curtain and has overheated, or if the
thermal circuit breaker is defective or too sensitive.
Specifications
Supply: 120/240 VAC, 60 Hz
Minimum load: 1.25 A (resistive only)
150 W @ 120 V AC
300 W @ 240 V AC
Maximum load: 12.5 A (resistive only)
1500 W @ 140 V AC
3000 W @ 240 V AC
Display range: 0 °C to 50.0 °C (32 °F to 99 °F)
Setpoint range: 5.0 °C to 27.0 °C (41 °F to 81 °F)
Resolution: 0.5 °C (1 °F)
Storage temperature: -20.0 °C to 50.0 °C (-4 °F to 120 °F)

Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
yourhome.honeywell.com
® U.S. Registered Trademark.
© 2015 Honeywell International Inc.
33-00150EF—01 M.S. 09-15
Printed in U.S.A.
33-00150EF-01
1-year limited warranty
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, 1985 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.