Issues with the humidity sensor such as a permanent humidity value "15%" means the sensor or motherboard is faulty and needs replacement.
Symptoms of a Faulty Motherboard / Troubleshooting: |
The most common issue involves the humidity value no longer responding (e.g., permenantly on 15% humidity) regardless of environmental changes. This is likely dueTo confirm a malfunction: Blow gently into the inside and see if the humidity increases. Test the Sensor:Blow gently into the inside and see if the humidity increases. If the humidity reading does not change, the sensor or motherboard is likely defective and requires replacement. |
Step-by-Step Replacement Instructions:
1. Power Off and Unplug the Unit
Ensure the machine is turned off and unplugged from any power source to avoid electrical hazards.
2. Remove the Front Scroll Button
Carefully detach the plastic front scroll button, it is only held in with friction
2. Undo the nut and washer
unscrew the nut and washer located behind where the plastic front scroll button was. This frees the mainboard from removal later.
3. Undo the Plastic Floor screws
Undo the four philips head screws holding the plastic floor down and remove the spool rollers (they are push fit)
Remember to be gentle with the screws and avoid using powertools as most are directly screwed into plastic meaning the threads can be easily stripped or damaged.
4. Carefully detach the Plastic Floor
Gently lift the floor upwards as carefully and gently as possible
Use small tweezers or Allen keys to grasp a vent and ease the floor out little by little
Be cautious as the interior insulation is glued to the walls and may come loose.
5. Remove the Blower Fan
Once the floor is removed you will be met with all the internal components and wiring.
Locate the blower fan and unscrew it from its position.
Disconnect the blower fan cable from the motherboard (it is reinforced with glue)
6. Access and Remove the Motherboard
With the blower fan removed, the motherboard will be fully accessible.
Unscrew the motherboard from its mounting points (there is one hidden at the back in one corner making it difficult to remove as it cannot be seen)
7. Remove the Motherboard
Carefully disconnect all cables attached to the motherboard, noting their positions for reassembly.
8. Install the Replacement Motherboard
Position the new motherboard in place.
Reconnect all cables to their corresponding ports, ensuring secure connections.
Screw the new motherboard into its mounting points.
9. Reassemble the Unit
Reattach the blower fan, securing it with the screws removed earlier.
Carefully place the plastic floor back into position, ensuring the padding remains attached to the walls.
Secure the floor with the four screws.
Reinstall the nut and washer behind the scroll button, then reattach the scroll button itself.
10. Test the New Motherboard
Plug the unit back in and power it on.
Test the humidity sensor by blowing into it. Ensure the humidity reading responds accurately to environmental changes.
End of guide.