I have a kyocera fs1100 that ends up with an attention led illuminated only.There is no motor noise and the fans arenot spining.Do you think that the psu board could be faulty?

Have you checked to see if the heater motor is ok. Sometimes the newer ones have a bearing in the end by the plastic fan and the bearing will allow the fan to drop down and cause a loud noise when running. To check turn off the heater motor fan on the dash and see if the noise goes away.

Your set does not uses a color wheel--it had LED illumination. So--there is only a couple of fans that could make this noise..OTHER than a possible failing LED power supply--capacitors on the module do fail. This is on the right side of the set--facing outwards at the bottom

The cd only has the drivers that were available when the printer shipped. You download the latest one here:
https://www.kyoceradocumentsolutions.eu/index/service/dlc.false.driver.FS1100._.EN.html#WIN7
And yes, it does have drivers for both 32 and 64 bit Windows 7

Check again that the pipes aren't clogged. Check all the way through from where the muck goes in to where it's supposed to end up, paying particular attention to places where the pipe narrows, goes round a bend, or changes material.

Check the machine doesn't just need emptying.

Wet/dry machines usually have some sort of float operated stop valve to stop you flooding the motor when you've filled it with water. Make sure this isn't stuck shut.

Check everything from the impellor right back to where the muck goes in is airtight. It doesn't take a huge hole to lose you a lot of suction. Pay particular attention to places that are meant to come apart routinely, and places where hoses join to hard fittings. If in doubt, run the machine and listen for sucking noises.

If there's a filter between the fan and the air outlet (there usually is) make sure it is clean

Assuming the motor is running, check it is turning the fan impeller.

Hopefully, one or other of these will get you somewhere

Depending on the age of the unit/Fan there may or may not be oil ports, at the end of the motor, (Little plastic pull out's) Would use mechanical oil 3n1 ect.
Also The capasitor usually goes bad over time, which can be purchased at a local Hvac supplier usually less then $20.
If the Motor will not turn freely, several turns with just hand spining then more then likely you need to replaice the motor. Let us know how it goes. Can follow up with additional simple test for you if you need.

I’m happy to help further over the phone at https://www.6ya.com/expert/michael_341f3f9dee622e54

you need to find it, you are right ,something is rubbing. the fan wont come on with the a/c off until its pretty hot. 225f or so I think.

How to Purge Incorrect Liquid Detergent from the Bulk Dispenser

The purge routine operates the bulk dispenser pump continuously to drain the bulk dispenser tank when an incorrect liquid was poured in the tank. The process consists of setting up the dishwasher to run the purge mode, running the purge mode and then cleaning up the purged detergent.

Follow these steps carefully to have a successful purge run.

For Top Control Models:

1. Make sure Pre-wash, Added Heat and Heated Dry LEDs are off.
2. Press Heated Dry and Down Arrow buttons together for 3 seconds. All LEDs will illuminate.
3. Press Added Heat and Up Arrow buttons together for 3 seconds. The Anti-bacteria LED will illuminate
4. Press Start button one time
5. Select Normal and make sure Pre-wash, Added Heat and Heated Dry LEDs are off.
6. Press Start button one more time and dishwasher will run a complete cycle without the main motor running. Cycle is complete when the Clean light illuminates. This should take approximately 60 minutes.
7. Open door and wipe up excess detergent from the door and tub
8. Flush remaining detergent off by pouring water on the door and tub where there is detergent residue.
9. Remove SmartDispenser cap and fill tank with water and then replace cap.
10. Repeat Steps 1 through 9 one time.
11. Then, repeat Steps 1 through 6. When the Clean LED illuminates, the system is purged and ready to be refilled with the correct detergent.

Front Mount Controls (same as above except for the changes in the two below steps):

2. Press Heated Dry and Cookware together for 3 seconds. All LEDs illuminate.

3. Press Added Heat and Cookware together for 3 seconds. The Anti-bacterial LED illuminates.

Changing the motor is not as difficult as you may think. From the roof, remove the outer shroud of the unit.

1. Remove the front evaporator cover (phillips screws along the edge).
2. Remove the condenser cover from the rear
3. With a 1/8" Allen Wrench, remove the condenser fan. CAUTION, be sure to pay particular attention to the way the fan turns.
4. With the same wrench, remove the blower fan. Again, pay attention to the orientation of the fan.
***If the fans are "stuck" to the shaft, it may be easier to remove the entire unit and place it on a bench to remove them. Secure the fan with a couple of blocks of wood and tap the end of the shaft with a punch and hammer.
5. Remove the nuts holding the fan motor to the separator plate (may have to pull back black foam pad to access. Remove the nut holding the fan to the support.
6. Cut the wires to the motor at the electrical connectors (located inside access panel on side of unit).
7. Remove the two brown wires from the capacitor
8. Re-install the new unit opposite of removal. Pay attention to where the fans were located on the shafts so that they do not rub when you put the unit back together.

Hope this helps,

Jeff

Kind of hard to diagnose this but I would recommend that you call a dealer for service. How long has the printer made the noise? It could be a sign that something is in need of repair. Also, try to figure out where the noise is coming from. This may help to determine what the exact problem is.

Sorry I couldn't be more specific.

Henry

Hi Folks, I have just had the same problem with a Kyocera FS-720 that also had the red/orange attention LED staying on permanently after being turned on. Turned out to have an empty toner cartridge. After replacing the toner cartridge, printer is as good as new again.

Cheers

Charlie T