INTEGRATED COMFORT SOLUTIONS 110-662 WA RRANTY Quick Start Installation and Programming User’s Manual 7 Day Programmable 3 Heat / 2 Cool HEAT PUMP H ™ 9720 ® DELUXE PROGRAMMABLE THERMOSTAT FIVE YEAR LIMITED WARRANTY Maple Chase Company warrants to the original contractor installer or to the original consumer user, each new Robertshaw thermostat to be free from defects in materials and workmanship under normal use and service for a period of five (5) years from the date of purchase.
PRODUCT FEATURES Attractive, Styleline™ design 7-day programming; 4 setpoints per day 4 pre-programmed setpoints EnergyStar® compliant QuickSet™ programming mode Autochangeover mode automatically switches system from heat to cool SET • Programmable fan control AN PROG/M • Detachable sub-base allows you to remove mounted thermostat T QUICKSE for easy, convenient programming CK LO • Energy Efficient Recovery (EER™) mode for maximum savings FILTER • Filter monitor notifies when to change or clean furnace f
8 Symptom Remedy Room temperature reading is inaccurate. If you have attached remote sensors, the thermostat will display the average temperature of the activated sensors. See "INSTALLATION INSTRUCTIONS" and "CHANGING DIP SWITCH SETTINGS". If there are no remote sensors attached, make sure that the remote sensor dip switch settings on the rear of the thermostat body are turned off and the MAIN thermostat dip switch is turned on. See "CHANGING DIP SWITCH SETTINGS.
The Robertshaw Item 9720 is directly compatible with 24V AC multi-stage heat pump systems with up to 3 stage heat/2 stage cool. It will operate with multi-stage heat pump systems that are automatic or manual changeover and have auxiliary or emergency heating. There are no optional items required for standard system installations. This thermostat will automatically control the heat and/or air conditioning system.
36 Symptom Remedy Thermostat will not turn on heat pump in heat mode. Uses auxiliary stages of heating to control setpoint. Compressor power outage safeguards may be in effect. (See "COMPRESSOR PROTECTION.") Heat turns on instead of cool and vice versa. Check wiring and system specifications. Thermostat turns on and off too much. Increase temperature differential setting. (See “PROGRAMMING.”) Display is indicating “LO BATT.” Replace back-up batteries soon. Be sure battery installation is correct.
IMPORTANT SAFETY INFORMATION (CONT.) ■ Do not switch system to cool if the temperature is below 50°F (10°C). This can damage the cooling system and may cause personal injury. ■ This thermostat is 24V AC powered and requires connection to both sides of transformer for proper operation. It also requires four charged “AA” ENERGIZER® brand batteries or equivalent alkaline batteries as a back-up power source.
34 CLEANING AND REPAIR ! DANGER: ELECTRIC SHOCK HAZARD. Turn off power at the main service panel before cleaning, servicing, or removing thermostat. Use a dry cloth to remove any dust from the thermostat cover. Do not use water or submerge the thermostat in water to clean. This can damage the thermostat. If the thermostat does not operate properly, do not try to repair the thermostat yourself. This will void your warranty.
NITEVIEW™ LCD DISPLAY BACKLIGHT This thermostat incorporates a revolutionary new display backlight to make nighttime temperature or program adjustments quick and easy. The NiteView™ display backlight uses modern lighting technology to provide an even-flowing light behind the display. There are two ways to activate the backlight: 1. Every time you press a keypad button or the ∨ or ∧ buttons to make an adjustment, the backlight will automatically turn on illuminating the display.
OPERATION 32 Changing dip switch settings: TCH 1 1. Use a small screwdriver or pencil to move the switch to the desired setting. - 2. Press RESET button. See Figure 5. Pressing RESET will erase any previously entered programming information. ++- + + NOTE: When changing the settings on “Switch 1”, the RESET button does not have to be pressed for the new configuration to register or operate.
To replace thermostat onto wiring subbase (cont.): 3. Press SYSTEM button to put the thermostat into HEAT, COOL, EMER, or AUTO mode. The thermostat will return to normal operating mode. SYSTEM You may reset the thermostat at any time. Reset is located on the back side of thermostat in the lower, right corner. See diagram. Pressing reset will erase ALL programmed information as well as time clock and day of week.
OPERATION 30 24V AC Circuit Power Monitor If you experience a loss of power, this thermostat will indicate “-AC” in the time field of the LCD display. This means that your system’s 24 V AC circuit is not receiving power or is not functioning correctly. The back-up batteries provided in this thermostat will maintain the programming during the loss of power, however, the thermostat requires 24V AC power and a functioning system for proper control.
PROGRAMMING 5. Press SET button. The first stage temperature differential (1˚F) will appear on the display as 10˚. 12 SET 6. Press either ∨ or ∧ button to change the first stage temperature differential. The differential may be adjusted from .5˚F (05˚), 1˚F (10˚), 1.5˚F (15˚), or 2˚F (20˚). (If your system cycles too often, increase the temperature differential setting.) 7. Press SET button. The second stage temperature differential (1.5˚F) will appear on the display as 15˚. SET 8.
28 OPERATION Selecting Auto Changeover 75˚ Lowest cool setting You may wish to set your thermostat so it will automatically choose between the HEAT or COOL programs for proper temperature control. This program feature is referred to as the AUTO (Auto Changeover) mode of system operation. 74˚ 73˚ While in AUTO mode, the thermostat will constantly monitor the room temperature to determine whether to run the HEAT or COOL program to maintain comfort.
PROGRAMMING NOTE: New dip switch settings for dip switch #2 will not register or operate options until the RESET button is pressed. Pressing RESET will erase any previously entered programming information. NOTE: If "AUTO CHANGEOVER" was enabled during installation, refer to "SELECTING AUTO CHANGEOVER" for restrictions on setting heating or cooling setpoint temperatures for proper operation. AUTO (changeover) will not function unless the thermostat is set to PROGRAM mode.
OPERATION 26 You may press the ∨ or ∧ buttons to temporarily change the programmed temperature while in COOL or HEAT mode. The ∨ or ∧ buttons will not change the setting while the system is in AUTO. You may also press the PROG/MAN button to change to manual mode and manually change the temperature settings. Resetting the Thermostat If you ever experience a problem with the thermostat and find it is not working correctly, or want to erase the ENTIRE program, simply press and release the reset button.
PROGRAMMING 16 4. Press SET button. The display will show the setpoint temperature SET MON TUE WED THU FRI SAT SUN NOTE: Pressing QUICKSET button instead of the SET button will also save your program settings. F MORN 5. Press either ∨ or ∧ button to adjust the setpoint temperature for the programmed MORN time. (NOTE: Holding down either ∨ or ∧ button scrolls the temperature in 1˚ increments.) 6. Press SET button. The display will show AUTO with FAN. MON TUE WED THU FRI SAT SUN SET MORN 7.
24 PROGRAMMING 5. Press SET button to save second digit. The third digit will flash. SET 6. Press ∨ or ∧ button to enter the third (right) digit. 7. Press SET button to save third digit. "Lock” appears on the screen and your combination is now saved. SET MON LOCK F HEAT AM PM MANUAL AUTO FAN Unlocking keypad: 1. Press LOCK button. The display will show “000.” LOCK 2. Follow steps 2-7 as listed above in “Setting your combination and lock keypad.
PROGRAMMING 2. Press SET button. The display will show the current day of the week or the last programmed day. Press ∨ or ∧ to advance to the day of the week you will program. 3. Press SET button. The display will show the time setting: 18 SET MON SET MON 4. Press either ∨ or ∧ button to adjust the time setting for MORN. (Note: Either ∨ or ∧ button scrolls the time in 30 minute increments.) 5. Press SET button.
PROGRAMMING 22 Programming Filter Monitor The filter monitor keeps track of the total time the system fan has been in operation during the heating or cooling modes. The "Check Filter" message appears when the hours of fan operation equals your programmed filter monitor hours setting. 1. Press SET and FILTER buttons at the same time. Release both buttons.The display will show: SET FILTER CHECK FILTER 2. Press ∨ or ∧ button to change filter hour setting (between 0 to 960 in 60 hour increments).
PROGRAMMING 20 Review or Modify Program 1. Press SYSTEM button until the word "HEAT" or "COOL" appears on the right side of the display.This will choose the program you wish to review or modify. 2. Press SET button. SYSTEM MON F PM MANUAL SET AUTO FAN MON F PM MANUAL 3. To advance through each day's programmed setpoint times, temperatures, and fan settings continue to press the SET button. Each time you press the SET button, the LCD display will advance to the next setting in the program.
PROGRAMMING 20 Review or Modify Program 1. Press SYSTEM button until the word "HEAT" or "COOL" appears on the right side of the display.This will choose the program you wish to review or modify. 2. Press SET button. SYSTEM MON F PM MANUAL SET AUTO FAN MON F PM MANUAL 3. To advance through each day's programmed setpoint times, temperatures, and fan settings continue to press the SET button. Each time you press the SET button, the LCD display will advance to the next setting in the program.
PROGRAMMING 22 Programming Filter Monitor The filter monitor keeps track of the total time the system fan has been in operation during the heating or cooling modes. The "Check Filter" message appears when the hours of fan operation equals your programmed filter monitor hours setting. 1. Press SET and FILTER buttons at the same time. Release both buttons.The display will show: SET FILTER CHECK FILTER 2. Press ∨ or ∧ button to change filter hour setting (between 0 to 960 in 60 hour increments).
PROGRAMMING 2. Press SET button. The display will show the current day of the week or the last programmed day. Press ∨ or ∧ to advance to the day of the week you will program. 3. Press SET button. The display will show the time setting: 18 SET MON SET MON 4. Press either ∨ or ∧ button to adjust the time setting for MORN. (Note: Either ∨ or ∧ button scrolls the time in 30 minute increments.) 5. Press SET button.
PROGRAMMING 5. Press SET button to save second digit. The third digit will flash. SET 6. Press ∨ or ∧ button to enter the third (right) digit. 7. Press SET button to save third digit. "Lock” appears on the screen and your combination is now saved. SET MON LOCK F HEAT AM PM MANUAL AUTO FAN Unlocking keypad: 1. Press LOCK button. The display will show “000.” LOCK 2. Follow steps 2-7 as listed above in “Setting your combination and lock keypad.
PROGRAMMING 16 4. Press SET button. The display will show the setpoint temperature SET MON TUE WED THU FRI SAT SUN NOTE: Pressing QUICKSET button instead of the SET button will also save your program settings. F MORN 5. Press either ∨ or ∧ button to adjust the setpoint temperature for the programmed MORN time. (NOTE: Holding down either ∨ or ∧ button scrolls the temperature in 1˚ increments.) 6. Press SET button. The display will show AUTO with FAN. MON TUE WED THU FRI SAT SUN SET MORN 7.
OPERATION 26 You may press the ∨ or ∧ buttons to temporarily change the programmed temperature while in COOL or HEAT mode. The ∨ or ∧ buttons will not change the setting while the system is in AUTO. You may also press the PROG/MAN button to change to manual mode and manually change the temperature settings. Resetting the Thermostat If you ever experience a problem with the thermostat and find it is not working correctly, or want to erase the ENTIRE program, simply press and release the reset button.
14 PROGRAMMING NOTE: New dip switch settings for dip switch #2 will not register or operate options until the RESET button is pressed. Pressing RESET will erase any previously entered programming information. NOTE: If "AUTO CHANGEOVER" was enabled during installation, refer to "SELECTING AUTO CHANGEOVER" for restrictions on setting heating or cooling setpoint temperatures for proper operation. AUTO (changeover) will not function unless the thermostat is set to PROGRAM mode.
OPERATION Selecting Auto Changeover 75˚ Lowest cool setting You may wish to set your thermostat so it will automatically choose between the HEAT or COOL programs for proper temperature control. This program feature is referred to as the AUTO (Auto Changeover) mode of system operation. 74˚ 73˚ While in AUTO mode, the thermostat will constantly monitor the room temperature to determine whether to run the HEAT or COOL program to maintain comfort.
PROGRAMMING 5. Press SET button. The first stage temperature differential (1˚F) will appear on the display as 10˚. 12 SET 6. Press either ∨ or ∧ button to change the first stage temperature differential. The differential may be adjusted from .5˚F (05˚), 1˚F (10˚), 1.5˚F (15˚), or 2˚F (20˚). (If your system cycles too often, increase the temperature differential setting.) 7. Press SET button. The second stage temperature differential (1.5˚F) will appear on the display as 15˚. SET 8.
OPERATION 30 24V AC Circuit Power Monitor If you experience a loss of power, this thermostat will indicate “-AC” in the time field of the LCD display. This means that your system’s 24 V AC circuit is not receiving power or is not functioning correctly. The back-up batteries provided in this thermostat will maintain the programming during the loss of power, however, the thermostat requires 24V AC power and a functioning system for proper control.
10 To replace thermostat onto wiring subbase (cont.): 3. Press SYSTEM button to put the thermostat into HEAT, COOL, EMER, or AUTO mode. The thermostat will return to normal operating mode. SYSTEM You may reset the thermostat at any time. Reset is located on the back side of thermostat in the lower, right corner. See diagram. Pressing reset will erase ALL programmed information as well as time clock and day of week.
OPERATION 32 Changing dip switch settings: TCH 1 1. Use a small screwdriver or pencil to move the switch to the desired setting. - 2. Press RESET button. See Figure 5. Pressing RESET will erase any previously entered programming information. ++- + + NOTE: When changing the settings on “Switch 1”, the RESET button does not have to be pressed for the new configuration to register or operate.
8 NITEVIEW™ LCD DISPLAY BACKLIGHT This thermostat incorporates a revolutionary new display backlight to make nighttime temperature or program adjustments quick and easy. The NiteView™ display backlight uses modern lighting technology to provide an even-flowing light behind the display. There are two ways to activate the backlight: 1. Every time you press a keypad button or the ∨ or ∧ buttons to make an adjustment, the backlight will automatically turn on illuminating the display.
CLEANING AND REPAIR ! DANGER: ELECTRIC SHOCK HAZARD. Turn off power at the main service panel before cleaning, servicing, or removing thermostat. Use a dry cloth to remove any dust from the thermostat cover. Do not use water or submerge the thermostat in water to clean. This can damage the thermostat. If the thermostat does not operate properly, do not try to repair the thermostat yourself. This will void your warranty.
6 IMPORTANT SAFETY INFORMATION (CONT.) ■ Do not switch system to cool if the temperature is below 50°F (10°C). This can damage the cooling system and may cause personal injury. ■ This thermostat is 24V AC powered and requires connection to both sides of transformer for proper operation. It also requires four charged “AA” ENERGIZER® brand batteries or equivalent alkaline batteries as a back-up power source.
Symptom Remedy Thermostat will not turn on heat pump in heat mode. Uses auxiliary stages of heating to control setpoint. Compressor power outage safeguards may be in effect. (See "COMPRESSOR PROTECTION.") Heat turns on instead of cool and vice versa. Check wiring and system specifications. Thermostat turns on and off too much. Increase temperature differential setting. (See “PROGRAMMING.”) Display is indicating “LO BATT.” Replace back-up batteries soon. Be sure battery installation is correct.
4 The Robertshaw Item 9720 is directly compatible with 24V AC multi-stage heat pump systems with up to 3 stage heat/2 stage cool. It will operate with multi-stage heat pump systems that are automatic or manual changeover and have auxiliary or emergency heating. There are no optional items required for standard system installations. This thermostat will automatically control the heat and/or air conditioning system.
Symptom Remedy Room temperature reading is inaccurate. If you have attached remote sensors, the thermostat will display the average temperature of the activated sensors. See "INSTALLATION INSTRUCTIONS" and "CHANGING DIP SWITCH SETTINGS". If there are no remote sensors attached, make sure that the remote sensor dip switch settings on the rear of the thermostat body are turned off and the MAIN thermostat dip switch is turned on. See "CHANGING DIP SWITCH SETTINGS.
2 PRODUCT FEATURES Attractive, Styleline™ design 7-day programming; 4 setpoints per day 4 pre-programmed setpoints EnergyStar® compliant QuickSet™ programming mode Autochangeover mode automatically switches system from heat to cool SET • Programmable fan control AN PROG/M • Detachable sub-base allows you to remove mounted thermostat T QUICKSE for easy, convenient programming CK LO • Energy Efficient Recovery (EER™) mode for maximum savings FILTER • Filter monitor notifies when to change or clean furnace f
FIVE YEAR LIMITED WARRANTY Maple Chase Company warrants to the original contractor installer or to the original consumer user, each new Robertshaw thermostat to be free from defects in materials and workmanship under normal use and service for a period of five (5) years from the date of purchase. This warranty does not cover batteries, damage caused by batteries, damage resulting from improper installation, alteration, misuse or abuse of the thermostat occurring after the date of purchase.