Garkinhall Systems GKH 575, User Manual

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D. Error Messages 

The fixture has some built-in diagnostic features that can help you isolate and 
repair problems internal to the fixture. It has an ability to display certain error 
message on the menu display that give an indication of any problems. The error 
messages are as follows: 
 

CoEr 

– Color wheel error. The color wheel has a small magnet glued onto its 

circumference. It signals the magnetic sensor when the wheel is in the home 
position. Should the sensing circuit fail, either because the magnet is missing or 
the sensor has failed, then the color wheel error message will appear on the 
menu display. When that happens, the color wheel may not be positioned 
correctly. 

 
FAn

 – Fan off. This message indicates that the fixture has overheated and the 

lamp and fan were automatically turned off.  
 

Note: This state can only occur in the event that the 

LO.OF

 option under 

SPEC

was set to 

OFF

. (See 

Setting the Fixture Personality

) 

 
FrEr

 - Frequency error. This message will appear if the mains frequency is 

anything other than 50 or 60Hz.

 
FtEr

 – Fixture overheating error. If the fixture overheats the temperature sensor 

will automatically turn off the lamp and the fixture overheating error will be 
displayed. When the temperature drops to a suitable level, then the display will  
change to a heat error, indicating that the fixture will not attempt to ignite the 
lamp for five minutes. After the five minute time out, the heat error message will 
disappear and the fixture will automatically strike the lamp. 

 
HEAt

– Heat error. The lamp requires a 5 minute cool down period before it can 

be turned on again after it has been operating. If you try to turn on the lamp 
within five minutes of the lamp having been turned off, the heat error message 
will flash in the menu display. After a period of five minutes, the fixture will 
automatically try to ignite the lamp again. The heat error message will also 
appear if the lamp fails to ignite within 28 seconds of attempting to turn it on, 
indicating a possible lamp circuit problem (missing lamp, or bad lamp, ignitor or 
ballast).  
 

Note: If the 

En.Sn.

 function (lamp light sensor – see 

Setting the Fixture 

Personality

) has been turned 

Off

 then the heat error message will only 

appear if the lamp has been turned off from the controller or the menu 
display and turned back on within five minutes. It will not automatically 
detect a lamp off condition should the lamp extinguish by itself.