TROUBLESHOOTING

Symptom

Possible Cause

Corrective Action

Heat,CoolorFanRunsConstantly.

1.

FANSwitchsettoFanON.

Checkeachwireconnectiontoverifytheyare

 

2.

Possibleshortinwiring.

notshortedortouchingtogether.Nobarewire

 

3.

Possibleshortinthermostat.

shouldstickoutfromunderterminalscrews.

 

4.

PossibleshortinHeat/Cool/Fansystem.

Tryresettingthethermostat.Ifthecondition

 

 

 

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.

FurnaceCyclesTooFastorTooSllow

1. Thelocationofthethermostatand/orthesize

Item2intheConfigurationMenuistheadjustment

(narroworwidetemperatureswing)

 

oftheHeatingSystemmaybeinfluencingthe

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.

CoolingCyclesTooFastorTooSlow

1. Thelocationofthethermostatand/orthesize

The cycle rate for cooling is fixed and cannot be

(narroworwidetemperatureswiing)

 

oftheCoolingSystemmaybeinfluencingthe

adjusted.Contactalocalservicepersonfor

 

 

cyclerate.

suggestions.

ThermostatSettingandThermometer

1.

Thermostatthermometersettingrequires

Thethermometercanbeadjusted+/-4degreesas

Disagree

 

adjustment.

listedinitem7oftheConfigurationMenu.Noother

 

 

 

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.

HeatorCoolStartsEarly

1.

EMRactivated

SeeConfigurationMenu(Item4).

ThermostatDoesNotFollowProgram

1. AMorPMsetincorrectlyinprogram.

Checkcurrentclockandprogramsettingsincluding

 

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.

BlankDisplayand/orKeypadNot

1.

Lossofpoweranddeadbatteries.

Replacebatteriesandcheckheat/coolsystemfor

Responding

2.

VoltageSpikeorStaticDischarge.

properoperation.Ifavoltagespikeorstaticdischarge

 

 

 

occurs use the Reset Operation listed above.