White Rodgers 1F80-261 Installation Instruction

Symptom

Possible Cause

Corrective Action

Heat, Cool or Fan Runs Constantly.

1. FAN Switch set to Fan ON.

Check each wire connection to verify they are

2. Possible short in wiring.

not shorted or touching together. No bare wire

3. Possible short in thermostat.

should stick out from under terminal screws.

4. Possible short in Heat/Cool/Fan system.

Try resetting the thermostat. 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.

Furnace Cycles Too Fast or Too Slow

1. The location of the thermostat and/or the size

Item 2 in the Configuration Menu is the adjustment

(narrow or wide temperature swing)

of the Heating System may be influencing the

that controls the cycle rate. If an acceptable cycle

cycle rate.

rate is not achieved using the FA (Fast) or SL
(Slow) adjustment contact a local service person for
additional suggestions.

Cooling Cycles Too Fast or Too Slow

1. The location of the thermostat and/or the size

The cycle rate for cooling is fixed and can not be

(narrow or wide temperature swing)

of the Cooling System may be influencing the

adjusted. Contact a local service person for

cycle rate.

suggestions.

Thermostat Setting and Thermometer

1. Thermostat thermometer setting requires

The thermometer can be adjusted +/- 4 degrees as

Disagree

adjustment.

listed in item 7 of the Configuration Menu. No other
adjustment is possible.

Clock Loses or Gains Time

1. Loss of power to thermostat and low batteries.

The thermostat will maintain its program in memory
even with no power/no batteries but the clock time
will be incorrect when power is restored. See No
Heat/No Cool/No Fan (common problems) above
for items to check in the system.

Heat or Cool Starts Early

1. EMR activated

See Configuration Menu (Item 4).

Thermostat Does Not Follow Program

1. AM or PM set incorrectly in program.

Check current clock and program settings including

2. AM or PM set incorrectly on the clock.

the AM or PM designations for each time period.

3. Voltage spike or static discharge.

If a voltage spike or static discharge occurs use the
Reset Operation listed above.

Blank Display and/or Keypad Not

1. Loss of power and dead batteries.

Replace batteries and check heat/cool system for

Responding

2. Voltage Spike or Static Discharge.

proper operation. If a voltage spike or static discharge
occurs use the Reset Operation listed above.

TROUBLESHOOTING