Troubleshooting

Reset Operation

If a voltage spike or static discharge blanks out the display

for approximately 10 seconds until the display goes blank. If

or causes erratic thermostat operation, you may need to

the thermostat has power, has been reset and still does not

reset the thermostat. To reset, the System Switch must be

function correctly contact your heating/cooling service person

in Cool or Heat. Simultaneously press

and

buttons

or place of purchase.

Symptom

 

Possible Cause

 

 

Corrective Action

 

 

 

 

 

 

 

No Heat/No Cool/No Fan

 

1. Blown fuse or tripped circuit breaker.

1. Replace fuse or reset breaker.

common problems)

 

2. Furnace power switch to OFF.

 

2. Turn switch to ON.

 

 

3. Furnace blower compartment door or

3. Replace door panel in proper position to engage safety

 

 

panel loose or not properly installed.

interlock or door switch.

 

 

 

 

 

No Heat

 

1. System Switch not set to Heat.

 

1. Set System Switch to Heat and raise setpoint above

 

 

 

 

 

 

room temperature.

 

 

2. Loose connection to thermostat or

 

2. Verify thermostat and system wires are securely

 

 

system

 

 

 

attached.

 

 

3. Heating System requires service or

 

3. Diagnostic: Set System Switch to Heat and raise

 

 

thermostat requires replacement.

 

the setpoint above room temperature. Within a five

 

 

 

 

 

 

minutes 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 system is operating correctly.

 

 

 

 

 

No Cool

 

1. System Switch not set to Cool.

 

1. Set System Switch to Cool and lower setpoint below

 

 

 

 

 

 

room temperature.

 

 

2. Loose connection to thermostat or

 

2. Verify thermostat and system wires are securely

 

 

system.

 

 

 

attached.

 

 

3. Cooling System requires service or

 

3. Same procedures as diagnostic for No Heat condition

 

 

thermostat requires replacement

 

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 if the compressor lock-out option is selected in

 

 

 

 

 

 

the configuration menu (Item 6).

 

 

 

 

 

Heat, Cool or Fan Runs

 

1. Possible short in wiring.

 

Check each wire connection to verify they are not

Constantly

 

2. Possible short in thermostat.

 

shorted or touching together. No bare wire should

 

 

3. Possible short in Heat/Cool/Fan

 

stick out from under terminal screws. Try resetting the

 

 

system.

 

 

 

thermostat as described above. If the condition persists,

 

 

4. Fan Switch set to Fan On.

 

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.

 

 

 

 

Furnace Cycles Too Fast

 

1. The location of the thermostat and/or

Item 4 (CR Heat) or 5 (CR Cool) in the Configuration

or Too Slow / Cooling

 

the size of the Heating or Cooling

 

Menu is the adjustment that controls the cycle rate. If an

Cycles Too Fast or Too

 

System may be influencing the cycle

acceptable cycle rate is not achieved using the FA (Fast)

Slow (narrow or wide

 

rate.

 

 

 

or SL (Slow) adjustment contact a local service person

temperature swing)

 

 

 

 

 

for additional suggestions.

 

 

 

 

 

Thermostat Setting and

 

1. Thermostat thermometer setting

 

The thermometer can be adjusted +/- degrees as listed in

Thermometer Disagree

 

requires adjustment.

 

 

item 8 of the Configuration Menu (see page 5). No other

 

 

 

 

 

 

adjustment is possible.

 

 

 

 

 

Blank Display and/or

 

1. Voltage Spike or Static Discharge.

 

If a voltage spike or static discharge occurs use the Reset

Keypad Not Responding

 

 

 

 

 

Operation listed above.

 

 

 

 

 

 

 

6

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White Rodgers 1F86EZ-0251 installation instructions Troubleshooting, Reset Operation
Page 5 Page 7

1F86EZ-0251 specifications

The White Rodgers 1F86EZ-0251 is a sophisticated digital thermostat that caters to the modern homeowner's need for precision control and energy efficiency. Designed to maximize comfort while minimizing energy consumption, this device stands out in the competitive thermostat market due to its array of features and user-friendly technologies.

One of the primary characteristics of the White Rodgers 1F86EZ-0251 is its intuitive interface, featuring a large easy-to-read display that allows users to effortlessly navigate through settings and options. The clarity of the screen contributes to a straightforward user experience, which is vital when adjusting temperature settings, scheduling, or accessing system information.

The 1F86EZ-0251 employs advanced temperature control technologies, including adaptive recovery, which optimizes the comfort level by learning how long it takes to reach the desired temperature at different times of the day. This feature not only enhances user comfort but also reduces energy usage, as the system can precondition the environment efficiently without unnecessary heating or cooling.

Another notable technology within this thermostat is its 7-day programmable scheduling capability. Users can customize their heating and cooling schedules for each day of the week, ensuring that the temperature is maintained at optimal levels when home and adjusted when away. This kind of schedule flexibility aids in significant energy savings throughout the year.

The White Rodgers 1F86EZ-0251 is also equipped with a filter change indicator, ensuring that users are reminded to maintain their HVAC system regularly. This feature helps prolong the life of the equipment and improves indoor air quality by ensuring the air filter is clean.

Moreover, compatibility is a strong point for the 1F86EZ-0251, as it works with various heating and cooling systems, including gas, oil, and electric systems. This versatility makes it an ideal choice for a wide range of households and HVAC setups.

In terms of installation, the unit is designed for easy mounting and comes with a built-in level to ensure proper alignment. This simplifies the installation process for DIY homeowners.

Overall, the White Rodgers 1F86EZ-0251 stands as a reliable option for those seeking a balance of comfort, control, and efficiency in their home heating and cooling management.
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