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Model

Programming Choices

1F97-1277

7 Day

5+1+1 Day

Non-Programmable

white-rodgers.com

emersonclimate.com

Blue Universal Touchscreen Thermostat with 

Automatic Heat/Cool Changeover Option

PART NO. 37- 7388B

Replaces 37-7388A

1529

Single Stage, Heat Pump

Installation and Operating Instructions

 

 APPLICATIONS

 

 SPECIFICATIONS

1F97-1277 Touchscreen Thermostat

Save these instructions for future use!

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS 
CAREFULLY BEFORE INSTALLING OR OPERATING THIS 
CONTROL COULD CAUSE PERSONAL INJURY AND/OR 
PROPERTY DAMAGE.

THERMOSTAT APPLICATION GUIDE

Thermostat 

Configuration Options

Thermostat 

Applications

Maximum 

Stages

Heat/Cool

Single Stage 1

No Heat Pump (SS1)

Gas, Oil, Electric, Heat Only, 

Cool Only or Heat/Cool 

Systems, 2 or 3 wire Hydronic 

Zone (Hot Water or Steam) 

Systems, 24 Volt or Millivolt

1+1

1+1

Heat Pump 1

Single Stage Compressor 

Heat Pump (HP1)

Single Stage Compressor Heat 

Pump Systems with

 Stages Aux./Emergency Heat

1+1

1+1

ATTENTION: MERCURY NOTICE

This product does not contain mercury. However, this 
product may replace a product that contains mercury.

Mercury and products containing mercury must not be 
discarded in household trash. Do not touch any spilled 
mercury. Wearing non-absorbent gloves, clean up any 
spilled mercury and place in a sealed container. For proper 
disposal of a product containing mercury or a sealed 
container of spilled mercury, place it in a suitable shipping 
container. Refer to 

www.thermostat-recycle.org

 for 

location to send the product containing mercury.

Index

Page

Installation

2

Wiring Diagrams

3

Thermostat Quick Reference

4

Installer Configuration Menu

5

Operating Your Thermostat

9

Programming

10

Troubleshooting

13

Electrical Rating:
 

Battery Power . . . . . . . . . . . . . . . . . . . . . . . . . .   mV to 30 VAC, NEC Class II, 50/60 Hz or DC

 Input-Hardwire  . . . . . . . . . . . . . . . . . . . . . . . . .   20 to 30 VAC
Terminal Load  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1.5A per terminal, 2.5A maximum all terminals combined
Setpoint Range  . . . . . . . . . . . . . . . . . . . . . . . . . . . .   45 to 99°F (7 to 37°C)
Rated Differentials:                                                              Fast.          Slow
 

Heat (Single Stage/Multi-Stage) . . . . . . . . . . . .         0.6°F         1.5°F

 

Cool (Single Stage/Multi-Stage) . . . . . . . . . . . .         1.2°F         1.7°F

 

Heat Pump  . . . . . . . . . . . . . . . . . . . . . . . . . . . .         1.2°F         1.7°F

 

Emer Heat  . . . . . . . . . . . . . . . . . . . . . . . . . . . .         0.6°F         1.7°F

Operating Ambient. . . . . . . . . . . . . . . . . . . . . . . . . .   32°F to +105°F (0 to +41°C)
Operating Humidity  . . . . . . . . . . . . . . . . . . . . . . . . .   90% non-condensing max.
Shipping Temperature Range  . . . . . . . . . . . . . . . . .   -40 to +150°F (-40 to +65°C)
Dimensions Thermostat. . . . . . . . . . . . . . . . . . . . . .   4-9/16"H x 5-13/16"W x 1-3/16"D

To prevent electrical shock and/or equipment damage, 
disconnect electric power to system at main fuse or 
circuit breaker box until installation is complete.

CAUTION

!

Summary of Contents for 1F97-1277

Page 1: ...products containing mercury must not be discarded in household trash Do not touch any spilled mercury Wearing non absorbent gloves clean up any spilled mercury and place in a sealed container For proper disposal of a product containing mercury or a sealed container of spilled mercury place it in a suitable shipping container Refer to www thermostat recycle org for location to send the product cont...

Page 2: ...hes The Power Stealing Switches Fig 1 should be left in the On position for most systems The information in the following table details the thermostat power method and switch options WARNING Thermostat installation and all components of the control system shall conform to Class II circuits per the NEC code INSTALLATION Figure 1 Thermostat Base Multi Stage 1F97 1277 2 AA Batteries Power Stealing Sw...

Page 3: ...tem You can configure the thermostat for use with the following fossil fuel systems Heat Pump 1 HP1 System RC RH C Y W E G O B 6 L CLASS II TRANSFORMER HOT 24VAC NEUTRAL 120VAC Heat mode 2nd stage Emergency Mode 1st stage Note Dual Fuel option de energizes Heat mode stage 1 compressor when auxiliary heat is energized 24 volt power for cooling 24 volt power for heating 24 volt common optional for s...

Page 4: ...Items 7 15 6 5 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 19 20 2 1 11 10 15 16 9 8 17 13 12 4 18 15 Remote indicates that the indoor remote temperature sensor is being accessed Outdoor Remote indi cates the outdoor remote temperature sensor is being accessed 16 Display time remote temperature 17 Heat ...

Page 5: ...ycle rate Heat 9 FA Cool Cr SL Selects Adjustable Anticipation cycle rate Cool 10 FA Cr AU Em SL Selects Adjustable Anticipation cycle rate auxiliary This item is only to appear if HP1 or HP2 is selected above 11 OFF SC On Select stage cycle completion On or Off 12 OFF CL On Selects Compressor Lockout 13 OFF dL On Selects Continuous Display backlight 14 0 Temperature 5 LO to 5 HI Selects Adjustabl...

Page 6: ...plete heating and or cooling cycles on the highest stage engaged during the cycle Thermostat will not reduce heating or cooling stages be fore the heating or cooling cycle is satisfied and all stages are turned off 12 Select Compressor Lockout CL Selecting CL On will cause the thermostat to wait 5 minutes between cool ing cycles This is intended to help protect the compressor from short cycling So...

Page 7: ...en using this feature The temperature limit icon will flash if an attempt is made to adjust the temperature beyond the range selected 25 Cool Temperature Limit Range This feature adjusts the lowest setpoint temperature for cool The default setting is 45 F It can be changed to a setting between 46 F and 82 F The temperature limit icon will be dis played to the left of your setpoint temperature when...

Page 8: ... is delayed for the time selected in seconds This delay is factory set to 60 but can be set in the range of 0 to 99 35 Select Auxiliary Off AO Applicable with HP1 or HP2 selected with outdoor sensor Select the temperature that will inhibit the auxiliary heating stage As long as the outdoor temperature is above the selected temperature the auxiliary heat will not turn on The default setting is 80 d...

Page 9: ... that the Emergency system is operating 3 Press to adjust the thermostat below room temperature The heating system should stop operating 20 minutes if the thermostat has not called for heat or cool during the past 60 minutes This assures moderate air ci rculation even when the heating and cooling equipment is not cycling Choose the System Setting Cool Off Heat Em Auto Press the SYSTEM key to selec...

Page 10: ...step or press Advance Day until the day you wish to copy to is flashing 5 Press Copy Copy will disappear the day you copied from will disappear and the day s you copied to will be on 6 If you wish to copy this same program into other days press Copy and repeat steps 3 4 and 5 7 Press Run Schedule to return to normal operation Fill in the blank schedule on the next page then Enter the Heating Progr...

Page 11: ... You can eliminate these two program periods in the configuration menu reference 5 if the building is occupied all day Day period will change to 6 00 AM and 70 and can be programmed as required Wake Up Morning Leave For Work Day Return Home Evening Go To Bed Night Heating Program 6 00 AM 70 F 8 00 AM 62 F 5 00 PM 70 F 10 00 PM 62 F Cooling Program 6 00 AM 75 F 8 00 AM 83 F 5 00 PM 75 F 10 00 PM 78...

Page 12: ... on the terminal block allow connection of the remote sensor The thermostat must have 24 VAC Common connection to terminal C for the remote sensor to operate The remote sensor can be enabled or disabled in the Installer Configuration menu item 28 When remote sensor Remote is selected Off factory default no remote sensor is enabled When remote sensor is selected On the next step is to select the re...

Page 13: ...the dual fuel temperature setpoint menu item 33 can be set to a temperature of 5 through 50 When outdoor remote sensor is not installed a software logic based dual fuel number menu item 34 from 01 to 09 can be selected A higher temperature or dual fuel setting will provide a smaller stage separation between the heat pump and Aux to give more comfort A lower temperature or number will provide a lar...

Page 14: ... FAN Switch set to Fan ON Check each wire connection to verify they are not shorted or touching together No bare wire should stick out from under terminal block Try resetting the thermostat as de scribed above 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 replac...

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