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White-Rodgers is a business 
of Emerson Electric Co.

The Emerson logo is a  
trademark and service mark 
of Emerson Electric Co.

HOMEOWNER HELP LINE:  1-800-284-2925

white-rodgers.com

emersonclimate.com

Symptom

Possible Cause

Corrective Action

No Heat/No Cool/No Fan 

(common problems)

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. 

4. Loose connection to thermostat or system.

Replace fuse or reset breaker. 

Turn switch to ON. 

Replace door panel in proper position to engage safety 

interlock or door switch. 

Tighten connections.

No Heat

1. Pilot light not lit. 

2. Furnace Lock-Out Condition. Heat 

  may also be intermittent. 

 

 

3. Heating system requires service or 

  thermostat requires replacement. 

Re-light pilot. 

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 HVAC service 

person for assistance. 

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 HVAC service 

person to verify the heating is operating correctly.

No Cool                                         

1. Cooling system requires service or 

  thermostat requires replacement.

Same 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 five minute delay 

before the thermostat clicks in Cooling.

Heat, Cool or Fan 

Runs Constantly

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

.

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, replace the thermostat.

Thermostat Setting & 

Thermostat Thermometer 

Disagree

1. Thermostat thermometer setting 

  requires adjustment.

The thermometer can be ad/- 4 degrees. See 

Temperature Display Adjustment in the Configuration 

Menu section.

Furnace (Air Conditioner) 

Cycles Too Fast or Too Slow 

(narrow or wide  

temperature swing)

 

1. The location of the thermostat and/or 

  the size of the Heating System may 

  be influencing the cycle rate.

Digital thermostats provide precise control and cycle 

faster than older mechanical models. The system turns 

on and off more frequently but runs for a shorter time 

so there is no increase in energy use. If you would like 

an increased cycle time, choose 

SL

 for slow cycle in the 

Configuration menu, step 7 (heat) or 8 (cool). If an ac-

ceptable cycle rate is not achieved, contact a local HVAC 

service person for additional suggestions. 

Forgot Keypad 

Lockout Code

Press the menu 

key

 (

key

 will disappear) and hold in for 

20 seconds. This unlocks the thermostat.

Blank display any or keypad 

not responding

1. Voltage Spike or static discharge

Use the Reset Operation shown above.

Thermostat does not have 

Menu Screen Numbers

1. Earlier version of thermostat

To access the earlier version instruction sheet (37-6914E) 

go to www.white-rodgers.com, enter 1F95-1291 in Model 

Number Search 

 

Reset Operation
Note:

 If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation, you can reset the 

thermostat by removing the thermostat from the wall plate and removing batteries for 2 minutes. After two minutes, replace 
the batteries and replace thermostat on wall plate. If the thermostat has been reset and still does not function correctly contact 
your heating/cooling service person or place of purchase. 

TROUBLESHOOTING 

Содержание 1F95-1277

Страница 1: ...tain 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 sh...

Страница 2: ... 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 1F95 1277 2 AA Batteries Power Stealing Switc...

Страница 3: ... 1 compressor when auxiliary heat is energized Heat mode 3rd stage Emergency Mode 1st stage Note Dual Fuel option de energizes Heat mode stages 1 and 2 both compressors when auxiliary heat is energized Heat mode 4th stage Emergency Mode 2nd stage Note Dual Fuel option de energizes Heat mode stages 1 and 2 both compressors when auxiliary heat is energized Heat mode 3rd stage Emergency Mode 2nd stag...

Страница 4: ...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 Savings display indicates the feature is active 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...

Страница 5: ...Management Recovery Not available if 4 is 0 8 FA Heat Cr SL Selects Adjustable Anticipation cycle 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 O...

Страница 6: ...s fast cycle FA Cr in all modes Heat Cool Em To change to slow cycling SL Cr press touch keys or toggle between FA SL The cycle rates are below Mode Med Slow Heat 0 6 F 1 5 F Cool 1 2 F 1 7 F Heat Pump 1 2 F 1 7 F Emer Heat 0 6 F 1 7 F 11 Stage Cycle Completion SC Selecting SC ON will cause the thermostat to complete heating and or cooling cycles on the highest stage engaged during the cycle Therm...

Страница 7: ...sh on the thermostat Refer to Com fort Alert Codes in Troubleshooting section If a Comfort Alert module is not connected or to disable active protec tion turn this feature OFF If a Comfort Alert module is connected and this feature is turned OFF the thermostat will still receive and flash the fault codes from the Comfort Alert module but the active protection will not be enabled to protect the com...

Страница 8: ...heat and shut down the compressor When the outdoor temperature falls below the selected tem perature the gas heat will begin Default is 35 but can be set in the range of 5 to 50 A lower setting will delay the start of gas heat allowing cooler temperature in the home INSTALLER CONFIGURATION MENU 35 Select Dual Fuel Setting With DF selected On and no outdoor sensor select the dF setting from 01 09 F...

Страница 9: ...he SYSTEM key to select Cool Thermostat controls only the cooling system Off Heating and Cooling systems are off Heat Thermostat controls only the heating system Em Setting is available only when the thermostat is configured in HP1 or HP2 mode Auto Auto Changeover is used in areas where both heating and cooling may be required on the same day AUTO allows the thermostat to automatically select heat...

Страница 10: ... 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 Program 1 Press the Menu key and then press Set Schedule Press SYSTEM key to select Heat in the system switch area indicating the act...

Страница 11: ...equired 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 F Programmable Fan Option In the Set Schedule mode the Fan key is used to select the fan operation during a program period The default state of the Fan key is FAN Auto fan runs during a...

Страница 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 29 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...

Страница 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 la...

Страница 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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