Programmable Thermostat

Model 8263 Installation and Operation Manual

5/2 Day Programmable Thermostat

Failure to follow and read all instructions carefully before installing or operating this control could cause personal injury and/or property damage. If you have any questions, please call Research Products Corporation at (800) 334-6011.

PREPARATIONS

Assemble tools required as shown below.

Wire cutter/stripper

Flat blade screwdriver

THERMOSTAT DETAILS

FIGURE 1 – Thermostat Base

Mounting hole

Electric or cordless drill with 3/16 inch drill bit, if needed.

Mounting hole

Level

Electric/Gas Switch

2

THERMOSTAT APPLICATIONS

Description

Standard Heat Only Gas or Oil Fired Systems (24 volt)*

Electronic Ignition Heat Only Two Wire Systems (24 volt)*

Yes

Yes

Electronic Ignition Heat Only Gas or Oil Fired Systems (24 volt)* Yes

Standard Heat/Cool Systems (24 volt)* Yes

Heat/Cool Systems Electric Heat (24 volt)*

Heat Only Electric Heat Systems (24 volt)*

Cool Only Systems (24 volt)*

Heat Pump Systems (No Aux or Emergency Heat)*

Yes

Yes

Yes

Yes

MOUNTING AND WIRING

WARNING

120 volts may cause serious injury from electrical shock. Disconnect electrical power to the furnace & air conditioner before starting installation. This thermostat is not a 120 volt (line voltage) device.

Improper installation may cause serious injury from electrical shock. This product must be installed by a qualifi ed heating & air conditioning contractor in accordance with

NEC Standards and applicable local and state codes.

Do not use on circuits exceeding specifi ed voltage.

Higher voltage will damage control and could cause shock or fi re hazard.

Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring will damage thermostat and could cause personal injury and/or property damage.

Thermostat installation and all components of the system shall conform to Class II circuits per NEC code.

ELECTRIC HEAT OR SINGLE-STAGE HEAT PUMP SYSTEMS

This thermostat is confi gured from the factory to operate a heat/cool, fossil fuel (gas, oil, etc.), forced air system. It is confi gured correctly for any system that DOES NOT require the thermostat to energize the fan on a call for heat. If your system is an electric or heat-pump system that REQUIRES the thermostat to turn on the fan on a call for heat, locate the ELECTRIC/GAS switch (see Figure 1) and switch it to the ELECTRIC position. This will allow the thermostat to energize the fan immediately on a call for heat. If you are unsure if the heating/cooling system requires the thermostat to control the fan, contact a qualifi ed heating and air conditioning service person.

HYDRONIC (HOT WATER OR STEAM) HEATING SYSTEMS

This thermostat is set to operate properly with a forced-air heating system. If you have a hydronic heating system (a system that heats with hot water or steam), you must set the thermostat to operate properly with your system by changing the fi rst option in the confi guration menu to SL (see Confi guration Menu, page 5).

Description

Hot Water Zone Heat Only Systems

Hot Water Zone Heat Only (Three Wire) Systems

Line Voltage Heating or Baseboard 110/240 Volt Systems

Millivolt Systems Floor or Wall Furnaces

12 VDC Mobile Home Application

Multi-stage Systems

Systems Exceeding 30VAC, 1.5 Amp

*Requires common wire for 24VAC at the thermostat

CAUTION

Take care when securing and routing wires so they do not short to adjacent terminals or rear of thermostat.

Personal injury and/or property damage may occur.

Terminal Cross Reference Chart

New Thermostat

Terminal Designation

Other Manufacturers’

Terminal Designation

RH

RC

G

W

Y

C

4

R

G

W

Y

C

RH

R

G

W

Y

C

M

V

F

H

C

X

G

W

Y

C

*

R

–

*Factory installed jumper wire between the RH and RC terminals must remain in place.

CHOOSE A LOCATION TO MOUNT THE THERMOSTAT

MOUNT THE THERMOSTAT…

• Approximately 5 feet above the fl oor. Refer to local codes for compliance with the Americans with Disabilities Act (ADA).

• On an interior wall in a frequently occupied space where the temperature is most representative of the zone being controlled by the thermostat.

• At least 18 inches away from an outside wall.

DO NOT MOUNT THE THERMOSTAT…

• Behind doors, in corners or other dead air spaces.

• In direct sunlight, near lamps or other sources of heat.

• On an outside wall or any wall exposed to an unconditioned space

(a garage for example).

• In the airfl ow path of a supply register, in stairways or near outside doors.

• On a wall where concealed pipes or ductwork will affect the thermostat temperature accuracy.

• Near sources of electrical interference, such as arcing switch contacts.

No

No

No

No

No

No

No

ATTACH THERMOSTAT BASE TO WALL

1. Remove the packing material from the thermostat. Gently pull the cover straight off the base. Forcing or prying on the thermostat will cause damage to the unit. Loss of internal programs may result from static discharge to thermostat circuit board. Please touch a grounded metal object before handling the thermostat. If necessary, move the

ELECTRIC/GAS switch (see ELECTRIC HEAT on page 2).

2. Connect wires beneath terminal screws on base using appropriate wiring schematic (see Figures 2 through 7).

3. Place base over wire access hole in wall, level for appearance, and mark mounting hole locations on wall using base as a template.

4. Move base out of the way. Drill mounting holes with 3/16 inch drill bit.

5. Fasten base loosely to wall using two mounting screws as shown in Figure 1. Place a level against bottom of base, adjust until level, and then tighten screws. (Leveling is for appearance only and will not affect thermostat operation.) If you are using existing mounting holes, or if holes drilled are too large and do not allow you to tighten base snugly, use plastic screw anchors to secure sub-base.

6. Wire the thermostat. IMPORTANT! ENSURE THE POWER AT

THE HVAC EQUIPMENT IS OFF.

a. Make sure the fan switch is set to Auto and the Mode switch is set to Off.

b. Strip 3” of cable insulation.

c. Strip 3/8” of insulation from each wire. Do not cut into the wire when stripping insulation, as this can lead to eventual control failure.

d. Secure the wires to the thermostat terminal strip according to the wiring diagram for the model being installed (see Figures

2 through 7). Use a fl at screw driver with a 1/8” tip (terminal screw driver). Use color coding where possible (i.e. red wire to

R terminal, white wire to W terminal, etc.).

e. Slide excess cable back into the wire entry wall opening and fi ll the hole with insulation. Failure to seal the hole can cause drafts to enter the thermostat and affect temperature sensing accuracy.

FIGURE 2 – Typical wiring diagram for heat only, 4-wire, single transformer systems

JUMPER

WIRE

THERMOSTAT

SYSTEM

NOTE

For Heat only, attach to RH and W

Fan

Relay

Heating

System

24 VAC

Hot

120 VAC

Neutral

TRANSFORMER

FIGURE 3 – Typical wiring diagram for cool only, 4-wire, single transformer systems

JUMPER

WIRE

THERMOSTAT

SYSTEM

Cooling

System

Fan

Relay

24 VAC

Hot

120 VAC

Neutral

TRANSFORMER

FIGURE 4 – Typical wiring diagram for heat/cool, 5-wire, single transformer systems

NOTE

RED jumper wire (provided with thermostat) must be connected between thermostat RH and RC terminals for proper thermostat operation with this system.

JUMPER

WIRE

THERMOSTAT

SYSTEM

Cooling

System

Fan

Relay

Heating

System

Hot

24 VAC 120 VAC

Neutral

TRANSFORMER

FIGURE 5 – Typical wiring diagram for heat/cool, 6-wire, two transformer systems

Cooling

System

Fan

Relay

Heating

System

THERMOSTAT

SYSTEM

24 VAC

Hot

120 VAC

Neutral

HEATING

TRANSFORMER

24 VAC

Hot

120 VAC

Neutral

COOLING TRANSFORMER

FIGURE 6 – Typical wiring diagram for heat pump with reversing valve energized in COOL

JUMPER

WIRE

JUMPER

WIRE

THERMOSTAT

SYSTEM

Reversing

Valve*

Compressor

Contactor

Fan

Relay

*Reversing valve is energized when the

system switch is in the COOL position

24 VAC

Hot

120 VAC

Neutral

TRANSFORMER

FIGURE 7 – Typical wiring diagram for heat pump with reversing valve energized in HEAT

JUMPER

WIRE

JUMPER

WIRE

THERMOSTAT

SYSTEM

Reversing

Valve*

Compressor

Contactor

Fan

Relay

*Reversing valve is energized when the

system switch is in the HEAT position

24 VAC

Hot

120 VAC

Neutral

TRANSFORMER

3

CHECK THERMOSTAT OPERATION

NOTE: To prevent static discharge problems, touch side of thermostat to release static build-up before touching any keys.

If at any time during testing your system does not operate properly, contact a qualifi ed service person.

FAN OPERATION

If your system does not have a G terminal connection, skip to

Heating System.

1. Turn on power to the system.

2. Move fan switch to ON position. The blower should begin to operate.

3. Move fan switch to AUTO position. The blower should stop immediately.

COOLING SYSTEM

CAUTION

To prevent compressor and/or property damage, if the outdoor temperature is below 50°F, DO NOT operate the cooling system.

This thermostat has a time delay between cooling cycles to allow the head pressure in the compressor to stabilize. If the temperature is adjusted to call for cool within 5 minutes of the last cycle the

Snowfl ake icon ( ) will blink indicating the thermostat is locked out. After 3 to 5 minutes, the compressor will start and the Snowfl ake

icon ( ) will stop fl ashing. This helps prevent the compressor from cycling too quickly and is normal operation for the thermostat.

1. Move SYSTEM switch to COOL position.

2. Press to adjust thermostat setting below room temperature.

The blower should come on immediately on high speed, followed by cold air circulation.

3. Press to adjust temperature setting above room temperature.

The cooling system should stop operating.

HEATING SYSTEM

1. Move SYSTEM switch to HEAT position. If the heating system has a standing pilot, be sure to light it.

2. Press to adjust thermostat setting above room temperature.

The heating system should begin to operate.

3. Press to adjust temperature setting below room temperature. The heating system should stop operating.

CAUTION

Do not set to OFF mode during periods when freezing temperatures could occur.

Before you begin programming your thermostat, you should be familiar with its features and with the display and the location and operation of the thermostat buttons (see Figure 8). Your thermostat consists of two parts: the thermostat cover and the base. To remove the cover, gently pull it straight out from the base. To replace the cover, line up the cover with the base and press gently until the cover snaps onto the base.

4

THE THERMOSTAT BUTTONS AND SWITCHES

1 (Up arrow) Raises temperature setting.

2 (Down arrow)

Lowers temperature setting.

3 TIME button.

4 PRGM (program) button.

5 RUN (program) button.

6 HOLD button.

7 FAN switch

(ON, AUTO).

8 SYSTEM switch

(COOL, OFF, HEAT).

11

FIGURE 8 – Thermostat buttons, display and switches

13

3 4 5 6

9

7

10

8

12

1

2

THE DISPLAY

9 Indicates day of the week.

10 Flame icon ( ) is displayed when the SYSTEM switch is in the

HEAT position. Snowfl ake icon ( ) is displayed (non-fl ashing) when the SYSTEM switch is in the COOL position. Snowfl ake

icon ( ) will be displayed (fl ashing) when the compressor is in lockout mode.

11 Alternately displays current time and temperature.

12 Displays currently programmed set temperature (this is blank when SYSTEM switch is in the OFF position).

13 The word HOLD is displayed when the thermostat is in the

HOLD mode.

OPERATING FEATURES

Now that you are familiar with the thermostat buttons and display, read the following information to learn about the many features of the thermostat.

• SIMULTANEOUS HEATING/COOLING PROGRAM STORAGE –

When programming, you can enter both your heating and cooling programs at the same time. There is no need to reprogram the thermostat at the beginning of each season.

• TEMPERATURE OVERRIDE – Press or until the display shows the temperature you want. The thermostat will override current programming and keep the room temperature at the selected temperature until the next program period begins.

Then the thermostat will automatically revert to the program.

• HOLD TEMPERATURE – The thermostat can hold any temperature within its range for an indefi nite period, without reverting to the programmed temperature. Press HOLD button.

HOLD will be displayed. Then choose the desired hold temperature by pressing or . The thermostat will hold the room temperature at the selected setting until you press RUN button to start program operation again.

CONFIGURATION MENU

The confi guration menu allows you to set certain thermostat operating characteristics to your system or personal requirements.

Press RUN to make sure the thermostat is in the run program mode, then press PRGM and RUN at the same time to enter the confi guration menu. The display will show the fi rst item in the confi guration menu.

The confi guration menu table summarizes the confi guration options.

An explanation of each option follows.

Press HOLD to change to the next menu item or press TIME to go backwards to the previous item in the menu. To exit the menu and return to the program operation, press RUN. If no keys are pressed within fi fteen minutes, the thermostat will revert to normal operation.

1. Select FA or SL (Fast or Slow) Heating Cycle Rate – The

FA setting is frequently used for gas, oil or electric heat. The SL setting produces a longer heating cycle which is normally for hot water or steam (hydronic) systems. Both settings produce very accurate temperature control and can be set to your personal preference. FA cycles the system just under 1°F and the SL setting cycles at approximately 1.5°F.

2. Select Backlit Display – The display backlight improves display contrast in low lighting conditions. Selecting Backlight ON will keep the light on continuously. Selecting Backlight OFF will keep the light off.

3. Select Progressive Recovery OFF or ON – Progressive

Recovery causes the thermostat to start heating or cooling early to make the room temperature reach the program setpoint at the time you specify. Heating will start 5 minutes early for every 1° of temperature required to reach setpoint.

Example: You select Progressive Recovery and have your heating programmed to 65° at night and 70° at 7 AM. If the room temperature is 65° the difference between 65° and 70° is

5°. Allowing 5 minutes per degree the thermostat setpoint will change to 70° at 6:35 AM. Cooling allows more time per degree because it takes longer to reach temperature.

4. Select Compressor Lockout LOC OFF or ON – Selecting LOC

ON will cause the thermostat to wait 5 minutes before turning on the compressor if the heating and cooling system loses power. It will also wait 5 minutes minimum between cooling cycles. This is intended to help protect the compressor from short cycling.

Some newer compressors already have a time delay built in and do not require this feature. Your compressor manufacturer can tell you if the feature is already present in their system. When the compressor time delay occurs it will fl ash the Snowfl ake icon

( ) for about fi ve minutes then turn on the compressor.

5. Select Temperature Display Adjustment 4 LO to 4 HI –

Allows you to adjust the room temperature display 4° higher or lower. Your thermostat was accurately calibrated at the factory but you have the option to change the display temperature to match other temperature measuring devices.

6. Select °F or °C Readout – Changes the display readout to

Celsius or Fahrenheit as desired.

Step

1

2

3

4

Press Button(s)

PRGM and RUN

HOLD*

HOLD*

HOLD*

Displayed

(Factory Default)

(FA) d-L (ON)

E (ON)

LOC (OFF)

CONFIGURATION MENU

Press to select:

SL

OFF

OFF

ON

or

5

6

HOLD*

HOLD*

0 HI (0)

(F)

7 RUN

*Press HOLD to advance to next item or TIME to move backwards to previous item.

4 LO to 4 HI

C

Comments

Select FA or SL (Fast or Slow) heating cycle rate

Select backlight ON or OFF

Select Progressive Recovery ON or OFF

Select compressor lockout OFF or ON

Select temperature display adjustment higher or lower

Select temperature display to F or C

Returns to normal operation

PROGRAMMING YOUR THERMOSTAT

This section will help you plan your thermostat’s program to meet your needs. For maximum comfort and effi ciency, keep the following guidelines in mind when planning your program.

• When heating (cooling) your house, program the temperatures to be cooler (warmer) when the house is vacant or while occupants are sleeping.

• During early morning hours, the need for cooling is usually minimal.

Look at the factory preprogrammed times and temperatures shown on page 6. If this program will suit your needs, simply press the RUN button to begin running the factory preset program.

If you want to change the preprogrammed times and temperatures, follow these steps.

Determine the time periods and temperatures for your weekday and weekend programs. You must program four periods for both the weekday and weekend program. However, you may use the same heating and cooling temperatures for consecutive time periods.

You can choose start times, heating temperatures, and cooling temperatures independently for both weekday and weekend programs

(for example, you may select 5:00 AM and 70° as the weekday

1st period heating start time and temperature, and also choose

7:00 AM and 76° as the weekday 1st period cooling start time and temperature). Use the table on page 6 to plan your program time periods and the temperatures you want during each period. You may also want to look at the sample program table to get an idea of how the thermostat can be programmed.

5

PROGRAMMING YOUR THERMOSTAT

(CONTINUED)

ENTERING YOUR PROGRAM

Follow these steps to enter the heating and cooling programs you have selected.

Set Current Time and Day

1. Press TIME button once. The display will show the hour only.

EXAMPLE:

2. Press and hold either or until you reach the correct hour and AM/PM designation (AM begins at midnight; PM begins at noon).

3. Press TIME once. The display window will show the minutes only.

EXAMPLE:

4. Press and hold either or until you reach the correct minutes.

5. Press TIME once. The display will show the day of the week.

6. Press or until you reach the current day of the week.

7. Press RUN once. The display will show the correct time and room temperature alternately.

ENTER HEATING PROGRAM

1. Move the SYSTEM switch to HEAT.

2. Press PRGM once. “MO TU WE TH FR” (indicating weekday program) will appear in the display. Also displayed are the currently programmed start time for the 1st heating period and the currently programmed temperature (fl ashing).

EXAMPLE:

This display window shows that for the 1st weekday period, the start time is 6:00 AM, and 70° is the programmed temperature

(this example refl ects factory preprogramming).

3. Press or to change the displayed temperature to your selected temperature for the 1st heating program period.

4. Press TIME once (the programmed time will fl ash). Press or until your selected time appears. The time will change in

15 minute increments. When your selected time is displayed, press

TIME again to return to the change temperature mode.

5. Press PRGM once. The currently programmed start time and setpoint temperature for the 2nd heating program period will appear.

6. Repeat steps 4 and 5 to select the start time and heating temperature for the 2nd heating program period.

7. Repeat steps 4 through 6 for the 3rd and 4th heating program periods. Weekday heating programs are now complete.

8. Press PRGM once. “SA SU” (indicating weekend program) will appear in the display, along with the start time for the 1st heating period and the currently programmed temperature.

9. Repeat steps 4 through 8 to complete weekend heating programming.

10. When you have completed entering your heating program, press RUN.

6

ENTER COOLING PROGRAM

If the outside temperature is below 50°F, disconnect power to the cooling system before programming. Energizing the air conditioner compressor during cold weather may cause personal injury or property damage.

1. Move SYSTEM switch to COOL position.

2. Follow the procedure for entering your heating program, using your selected cooling times and temperatures.

CHECK YOUR PROGRAMMING

Follow these steps to check your thermostat programming one fi nal time before beginning thermostat operation.

1. Move SYSTEM switch to HEAT position.

2. Press PRGM to view the 1st weekday heating period time and temperature. Each time you press PRGM, the next heating period time and temperature will be displayed in sequence for weekday, then weekend program periods (you may change any time or temperature during this procedure).

3. Press RUN.

4. Move SYSTEM switch to COOL position.

5. Repeat step 2 to check cooling temperatures.

6. Press RUN to begin program operation.

YOUR THERMOSTAT IS NOW FULLY PROGRAMMED AND

READY TO AUTOMATICALLY PROVIDE MAXIMUM COMFORT

AND EFFICIENCY!

Heating/Cooling Schedule Plan (Factory Program)

Weekday (5 Day) Weekend (2 Day)

Period

1ST

2ND

3RD

4TH

1ST

2ND

3RD

4TH

Start Time Temperature Start Time Temperature

6:00 AM

8:00 AM

5:00 PM

10:00 PM

6:00 AM

8:00 AM

5:00 PM

10:00 PM

70°F

62°F

70°F

62°F

78°F

85°F

78°F

82°F

6:00 AM

8:00 AM

5:00 PM

10:00 PM

6:00 AM

8:00 AM

5:00 PM

10:00 PM

70°F

62°F

70°F

62°F

78°F

85°F

78°F

82°F

Period

1ST

2ND

3RD

4TH

1ST

2ND

3RD

4TH

My Heating/Cooling Schedule Plan

Weekday (5 Day) Weekend (2 Day)

Start Time Temperature Start Time Temperature

CLEANING THE THERMOSTAT

If the surface of the thermostat becomes dirty it can be cleaned with plain water or a non-abrasive household cleaner including glass cleaner. When using any cleaner, be careful not to get any into the interior of the thermostat. Do not spray any liquid directly onto

the thermostat. Spray the cleaner onto a soft cloth and wipe the surface of the thermostat.

SPECIFICATIONS

ELECTRICAL DATA

Electrical Rating:

20 to 30 VAC 50/60 Hz.

0.05 to 1.2 Amps (Load per terminal)

1.5 Amps Maximum Total Load (All terminals combined)

THERMAL DATA

Setpoint Temperature Range:

45°F to 90°F (7°C to 32°C)

Operating Ambient Temperature Range:

32°F to 105°F

Operating Humidity Range:

0 to 90% RH (non-condensing)

Shipping Temperature Range:

-40°F to 150°F

TROUBLESHOOTING

RESET OPERATION

If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation you can reset the thermostat by pressing , and TIME at the same time. This also resets the factory defaults. If the thermostat has power, has been reset and still does not function correctly, contact your heating/cooling service person or place of purchase.

Symptom

No Heat/No Cool/No Fan

(common problems)

No Heat

No Cool

Possible Cause

1. Blown fuse or tripped circuit breaker.

2. Furnace power switch to OFF.

3. Furnace blower compartment door or panel loose or not properly installed.

Corrective Action

1. Replace fuse or reset breaker.

2. Turn switch to ON.

3. Replace door panel in proper position to engage safety interlock or door switch.

1. Pilot light not lit.

2. System Switch not set to HEAT.

3. Loose connection to thermostat or system.

4. Furnace Lock-Out Condition. Heat may also be intermittent.

5. Heating system requires service or thermostat requires replacement.

1. System Switch not set to COOL.

2. Loose connection to thermostat or system.

3. Cooling system requires service or thermostat requires replacement.

1. Re-light pilot.

2. Set System Switch to HEAT and raise setpoint above room temperature.

3. Verify thermostat and system wires are securely attached.

4. Many furnaces have safety devices that shut down when a lock-out condition occurs. If the heat works intermittently, contact the furnace manufacturer or local service person for assistance.

5. Diagnostic: Set System Switch to HEAT and raise the setpoint above room temperature. Within a few seconds, the thermostat should make a soft click sound. This sound usually indicates the thermostat is operating properly. If the thermostat does not click, try the reset operation listed above. If the thermostat does not click after being reset contact your heating and cooling service person or place of purchase for a replacement. If the thermostat clicks, contact the furnace manufacturer or a service person to verify the heating is operating correctly.

1. Set System Switch to COOL and lower setpoint below room temperature.

2. Verify thermostat and system wires are securely attached.

3. Same procedure as diagnostic for No Heat condition except set the thermostat to COOL and lower the setpoint below the room temperature. There may be up to a fi ve minute delay before the thermostat clicks in Cooling.

7

TROUBLESHOOTING

(CONTINUED)

Symptom

Heat, Cool or Fan Runs

Constantly

Possible Cause

1. Possible short in wiring.

2. Possible short in thermostat.

3. Possible short in heat/cool/fan system.

4. Fan Switch set to Fan On.

Furnace Cycles Too Fast or

Too Slow

(narrow or wide temperature swing)

The location of the thermostat and/or the size of the Heating System may be infl uencing the cycle rate.

Corrective Action

1. – 4. Check each wire connection to verify they are not shorted or touching together. No bare wire should stick out from under terminal screws. Try resetting the thermostat as described on page 7. If the condition persists, the manufacturer of your system or service person can instruct you on how to test the Heat/Cool system for correct operation. If the system operates correctly, replace the thermostat.

Digital thermostats normally provide precise temperature control and may cycle faster than some older mechanical models. A faster cycle rate means the unit turns on and off more frequently but runs for a shorter time so there is no increase in energy use. If you would like to increase the cycle time, change the cycle rate to “SL” in the confi guration menu. It is not possible to shorten the cycle time. If an acceptable cycle rate is not achieved as received or by changing the cycle rate, contact a local service person for additional suggestions.

The cycle rate for cooling is fi xed and cannot be adjusted. Contact a local service person for suggestions.

Cooling Cycles Too Fast or Too Slow

(narrow or wide temperature swing)

Thermostat Setting and

Thermostat Thermometer

Disagree

Thermostat Does Not

Follow Program

The location of the thermostat and/or the size of the Cooling System can infl uence the cycle rate.

Thermostat thermometer setting requires adjustment.

1. AM or PM set incorrectly in program.

2. AM or PM set incorrectly on the clock.

3. Voltage spike or static discharge.

4. Thermostat may be performing

Progressive Recovery actions.

Blank Display and/or

Keypad Not Responding

Voltage spike or static discharge.

Clock Loses or Gains Time Loss of power to thermostat.

Heat or Cool Starts Early Progressive Recovery activated.

The thermometer can be adjusted +/- 4 degrees. See Select Temperature

Display Adjustment (#5 in the Confi guration Menu section).

1. – 3. Check current clock and program settings including the AM or PM designations for each time period. If a voltage spike or a static discharge occurs use the Reset Operation listed on page 7 in this Troubleshooting section.

4. Disable Progressive Recovery from the Confi guration Menu if this feature is not desired.

If a voltage spike occurs, use the Reset Operation listed on page 7 in this

Troubleshooting section.

The thermostat will maintain its program in memory even with no power but the clock time will be incorrect when power is restored.

See No Heat/No Cool/No Fan (common problems) in the Troubleshooting chart on page 7 for items to check in the system.

See Confi guration Menu item #4.

LIMITED WARRANTY

Your Research Products Corporation Aprilaire ® Thermostat unit is expressly warranted for two (2) years from date of installation to be free from defects in materials and workmanship.

Research Products Corporation’s exclusive obligation under this warranty shall be to supply, without charge, a replacement for any thermostat which is found to be defective within a two (2) year period and which is returned, together with the date of installation, no later than thirty (30) days after said two (2) year period by you to either your original supplier or to Research Products Corporation, Madison, Wisconsin 53701.

THIS WARRANTY SHALL NOT OBLIGATE RESEARCH PRODUCTS CORPORATION FOR ANY LABOR COSTS AND SHALL NOT APPLY TO DEFECTS IN WORKMANSHIP OR MATERIALS FURNISHED BY

YOUR INSTALLER AS CONTRASTED TO DEFECTS IN THE THERMOSTAT ITSELF.

IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE SHALL BE LIMITED IN DURATION TO THE AFORESAID TWO YEAR PERIOD. RESEARCH PRODUCTS CORPORATION’S

LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, OTHER THAN DAMAGES FOR PERSONAL INJURIES, RESULTING FROM ANY BREACH OF THE AFORESAID IMPLIED WARRANTIES OR THE

ABOVE LIMITED WARRANTY IS EXPRESSLY EXCLUDED. THIS LIMITED WARRANTY IS VOID IF DEFECT(S) RESULT FROM FAILURE TO HAVE THIS THERMOSTAT INSTALLED BY A QUALIFIED HEATING AND AIR

CONDITIONING CONTRACTOR. IF THE LIMITED WARRANTY IS VOID DUE TO FAILURE TO USE A QUALIFIED CONTRACTOR, ALL DISCLAIMERS OF IMPLIED WARRANTIES SHALL BE EFFECTIVE UPON INSTALLATION.

Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages, so the above exclusion or limitations may not apply to you.

This warranty gives you specifi c legal rights and you my also have other rights which vary from state to state.

WARRANTY REGISTRATION

Please… Take a few minutes to visit us online at www.aprilaire.com to register your Aprilaire product. If you do not have online access, please mail a postcard with your name, address, phone number, product or model purchased, date of purchase and dealer name to:

Research Products Corporation, P.O. BOX 1828, Madison, WI 53701

YOUR WARRANTY REGISTRATION INFORMATION WILL NOT BE SOLD OR SHARED OUTSIDE OF THIS COMPANY.

61000474 5.06

B2204149A

8

RESEARCH PRODUCTS CORPORATION

P.O. BOX 1467 • Madison, WI 53701-1467 • Phone: 800/334-6011 • Fax: 608/257-4357 • www.aprilairecontractor.com Printed in China