User Manual
Before you call for service
Troubleshooting Tips  
Save time and money! Review the charts on the following 
pages first and you may not need to call for service.
Problem  Possible Causes  What To Do
Zoneline does  The unit is  • Make sure the Zoneline plug is pushed completely  
not start unplugged.   into the outlet.
  The power cord is not  • Remove the room cover and make sure that the  
 firmly attached.   black connector on the end of the power cord is  
   firmly engaged.
  The fuse is blown/circuit  • Check the house fuse/circuit breaker box and replace 
  breaker is tripped.    the fuse or reset the breaker.
  The unit is waiting for • This is normal. The Zoneline will start again after 
  the compressor overload    it resets. 
  protector to reset.
 Power failure. • If power failure occurs, set the mode control to OFF. 
      When power is restored, set the mode control to the 
   desired setting.
  • There is a protective time delay (up to 3 minutes) to 
      prevent tripping of the compressor overload. For this 
      reason, the unit may not start normal heating or cooling 
      for 3 minutes after it is turned back on.
  The power cord current   • Press the RESET button located on the power cord plug  
  interrupter device is tripped. or the box near the plug.
  • If the RESET button will not stay engaged, discontinue use  
   of the Zoneline and contact a qualified service technician.
Zoneline does not cool Indoor airflow   • Make sure there are no curtains, blinds or furniture 
or heat as it should is restricted.   blocking the front of the Zoneline.
  Outdoor airflow is  • Make sure the rear grille is not restricted. This can  
  restricted or recirculated.    cause the unit to cycle off due to the compressor 
   overload protector.
  • Outdoor grille must have a minimum of 65% free area. 
      Non-GE grilles may be too restrictive for proper 
      performance. Consult your salesperson for assistance.
  The temp control may  • Turn the control to a lower or higher setting. 
  not be set properly.    NOTE: The temperature limiter may be limiting the 
   temperature range.
  The air filter is dirty.  • Clean the filter at least every 30 days. 
   See the Operating Instructions section.
  The room may have  • When the Zoneline is first turned on you need to 
  been hot or cold.    allow time for the room to cool down or warm up.
  Outdoor air is  • Set the vent control to the closed position. 
  entering the room.    NOTE: Units equipped with make-up ventilation will continuously 
      allow some outdoor air into the room.
Burning odor at the start  Dust is on the surface   • This can cause a “burning” odor at the beginning of 
of heating operation  of the heating element.    the heating operation. This odor should quickly fade.
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