White Rodgers UNP310 - Error Icons and Mode Conflicts

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Symptom Possible Cause Corrective Action
“CallforService”iconappearson
displayed
1.Heatingsystemisnotabletoheat
thespacetowithin10degreesofthe
setpoint within 2 hours
2. Cooling system is not able to cool
thespacetowithin10degreesofthe
setpoint within 2 hours
3.If“--”isdisplayedfortheRoomTem-
perature, a replacement thermostat
is needed
4.Noneofthebuttonsoperateonthe
thermostat
5.If“CallforService”isashing,com-
pressor self diagnostic is detecting an
issue with the outdoor unit
1.Seecorrectiveactionfor“NoHeat”
2.Seecorrectiveactionfor“NoCool”
3.Replacethermostat
4.Makesurekeypadlockoutisnot
turned on ( ),Ifit’sOFF,tryreset
shown below.
5.Contactaservicepersontoverify
the outdoor equipment is operating
correctly
Heatpumpsystemrunsheatincool
mode/cool in heat mode
Changeover“O/B”setincorrectly Usecongurationtoswitch“O”to“B”
or“B”to“O”