User Manual
49-5000355 Rev. 2  25
TROUBLESHOOTING TIPS
Troubleshooting Tips... Before you call for service
Save time and money! Review the charts on the following pages first and you may not need to call for service.
Problem Possible Cause What To Do
Zoneline does not start. The unit is unplugged. 0DNHVXUHWKH=RQHOLQHSOXJLVSXVKHGFRPSOHWHO\LQWR
the outlet.
The power cord is not firmly 
attached.
Remove the room cover and make sure that the 
black connector on the end of the ower cord is firmly 
engaged.
The fuse is blown/circuit breaker 
is tripped.
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the fuse or reset the breaker.
The unit is waiting for the 
compressor overload protector to 
reset.
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resets.
Power Failure. ,ISRZHUIDLOXUHRFFXUVVHWWKHPRGHFRQWUROWROFF. 
When power is restored, set the mode control to the 
desired setting.
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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 interrupter 
devise is tripped.
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technician.
Zoneline does not cool or 
heat as it should.
Indoor airflow is restricted. Make sure there are not curtains, blinds or furniture 
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Outdoor airflow is restricted or 
recirculated.
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cause the unit to cycle off due to the compressor 
overload protector.
Outdoor grille must have a minimum of 65% free area. 
Non-GE Appliances grills may be too restrictive for 
proper performance. Consult your salesperson for 
assistance.
The temp control may not be set 
properly.
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temperature range.
The air filter is dirty. &KDQJHWKHILOWHUDWOHDVWHYHU\GD\V6HHWKH&DUH
and Cleaning section
The room may have been hot or 
cold.
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time for the room to cool down or warm up.
Outdoor air is entering the room. Set the vent control to the closed position. 
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continuously allow some outdoor air into the room.
Burning odor at the start 
of heating operation.
Dust on the surface of the heating 
elements.
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