White Rodgers 1F89EZ-0251 Manual De Usuario

6

If a voltage spike or static discharge blanks out the display or 
causes  erratic  thermostat  operation,  you  may  need  to  reset 
the thermostat. To reset, the System Switch must be in 

HEAT, or EMER. Simultaneously hold the 

 and 

 buttons 

for  approximately  10  seconds  until  the  display  goes  blank.  If 
the thermostat has power, has been reset and still does not 
function correctly contact your heating/cooling service person 
or place of purchase. 

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.

Replace fuse or reset breaker.
Turn switch to ON.
Replace door panel in proper position to engage safety 
interlock or door switch. 

1. System Switch not set to Heat.

2. Loose connection to thermostat or 
    system
3. Heating System requires service or 
    thermostat requires replacement.

Set System Switch to Heat and raise setpoint above room 
temperature.
Verify thermostat and system wires are securely attached.

Diagnostic: Set System Switch to Heat and raise 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, con-
tact the furnace manufacturer or a service person to verify 
the heating system is operating correctly.

1. System Switch not set to Cool.

2. Loose connection to thermostat or 
    system.
3. Cooling System requires service or 
    thermostat requires replacement

Set System Switch to Cool and lower setpoint below room 
temperature.
Verify thermostat and system wires are securely attached.
Same procedure 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 if the 
compressor lock-out option is selected in the configuration 
menu.

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 screws. Try resetting the thermostat as 
described below. 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.

1. The location of the thermostat and/or 
   the size of the Heating System may be  
   influencing the cycle rate.

The cycle rate adjustment can be found in the configuration 
menu. If an acceptable cycle rate is not achieved using the 
FA (Fast) or SL (Slow) adjustment contact a local service 
person for additional suggestions.

1. The location of the thermostat and/or 
    the size of the Cooling System may 
    be influencing the cycle rate.

The cycle rate for cooling is fixed and can not be adjusted. 
Contact a local service person for suggestions.

1. Thermostat thermometer setting 
    requires adjustment.

The thermometer can be adjusted +/- 4 degrees as listed 
in the Configuration Menu. No other adjustment is possible.

1. Voltage Spike or Static Discharge.

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