White Rodgers UP310 Install Manual page 34

Symptom
"Call for Service" icon appears on
displayed
Heat pump system runs heat in cool
mode/cool in heat mode
34
Possible Cause
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 flashing, com-
pressor self diagnostic is detecting an
issue with the outdoor unit
Changeover "O/B" set incorrectly
Corrective Action
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
Use configuration to switch "O" to "B"
or "B" to "O"