White Rodgers 875 Manual De Usuario

 

 

No Cool 

1.  SYSTEM Switch not set to COOL 

Set SYSTEM Switch to COOL and lower setpoint    

 

   

below room temperature.

 

2.  Loose connection to thermostat or system. 

Verify thermostat and system wires are securely  

 

  

 

attached.

 

3.  Cooling System requires service or thermostat 

Same procedure as diagnostic for No Heat  

 

  requires replacement. 

condition except set the thermostat to COOL and  

 

   

lower the setpoint below the room temperature.  

 

   

There may be up to a fi ve minute delay before  

 

 

   

the thermostat clicks in Cooling if the compressor   

 

   

lock-out option is selected in the confi guration  

 

 

   

menu (Item 6).

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 Confi guration Menu is the adjustment    

(narrow or wide temperature swing) 

  of the Heating System may be infl uencing 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 fi xed and can not be

(narrow or wide temperature swing) 

  of the Cooling System may be infl uencing 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 Confi guration 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 Confi guration 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.

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