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Please add any Hints or Tips regarding this lighting fixture here!

The Following may apply to the Entour version as well as the Krypton.

Firstly check that the Fan is working underneath the Fan Casing (If you put you hand underneath the vent you should feel the air coming out).

In the Martin Mac 250 Krypton older versions have their temperature sensor mounted in an area where the trailing wires could burn out and melt this has happened to a MAC 250 Krypton that I was working on, its Lamp would not strike and it was because the Cables had burnt and the plastic became brittle and so snapped and causing the exposed wires to short against the frame, You can remedy this by simply bending up the flap at the end of your Fan casing to a small degree and then drill two holes to screw the temperature sensor onto which is what they have done in newer MAC 250's.

The Hot error can also be caused by a Malfunctioning Light Sensor, sometimes its just a wiggle of the connector if that doesn't work for you replace the light sensor or first try re-doing the solder connecting the sensor to the PCB

Here is the location of the Sensor :

Please Note the GoER error relates similarly to the CoER error but I personally have only dealt with the CoER error.

If you see the CoER Error it means the Kryptons Magnetic indexing sensor has failed to find the Magnet on the Colour Wheel or the Sensor it's self is defective. What I personally found when working on four Kryptons is that either due to the screw coming loose or someone simply not tightening or putting the Colour wheel back correctly in position the magnetic doesn't get near the sensor for it to find it! When you have fixed it the Colours respond and index beautifully!

Magnet and Sensor :

Gap that was sufficient for easy rotation of the colour wheel (Not dragging on any part of the Krypton) :

martin_mac250_kryptonentour_k.pdf