Do not use a cord that shows cracks or abrasion damage along its length or at either the plug or connector end.
? Unplug or disconnect the Zoneline at the fuse box or circuit breaker before making any repairs.
Troubleshooting Tips
NOTE: We strongly recommend that any servicing be performed by a qualified individual.
Consumer Support
READ AND FOLLOW THIS SAFETY INFORMATION CAREFULLY.
SAVE THESE INSTRUCTIONS
Operating Instructions
SLEEP OPERATION
TEMP CONTROL FAN, MODE & SLEEP OPERATION
Fan, Mode & Operation Control
The temp control is used to maintain the room temperature. The compressor will cycle on and off to keep the room at the same level of comfort.
Press the + pad to raise the temperature.
Press the pad to lower the temperature.
FANsets the fan operation for HIGH,
LOW or AUTO speed. When set at AUTO, it automatically switches between LOW and HIGH as room temperature changes.
3900 Series only
When the outdoor temperature is lower than 25F, heat is provided by the electric heater in the air conditioner instead of by the heat pump.
To cancel the sleep mode, press the MODE pad or the SLEEP pad a second time.
OPERATIONON/STOPTurns the unit on or off. Power remains connected to the
Zoneline. The Freeze Sentinel feature still
functions if switch 6 is enabled (UP). See the Freeze Sentinel section.
NOTE: The temperature display will flash to indicate a possible unit malfunction. Set operation control to STOP and then restart the unit. If the flashing light reappears within
30 minutes, call for service.
Troubleshooting Tips
Press to set the air conditioner to run for
8 hours before it automatically returns to the previous setting.
When in the cooling mode and the sleep timer is set, the set temperature will automatically increase 2F after the second hour then 1F each hour over the next two hours. Also, the fan speed will change to low. When in the heating mode, the set temperature will decrease in the same
MODECOOLFor cooling
FANFor fan-only operation
HEATFor heating
Quick Heat Recovery
Activates each time the thermostat is switched from STOP or a COOL mode to a HEAT mode.
Electric heaters are energized until the thermostat set point is reached. On heat pump models, the heat pump operation will resume at
