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U4-2 code on xerox 5320 copier. Is it the thermistor? Can I replace it and how? Thanks.

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  • edztshirts Oct 09, 2009

    The U4-2 code has been displayed for months now and I cannot do anything but to turn off the copier. Is there a way to fix it myself? The parts are online. The fuser or the thermistor, I just don't know which to replace. The code definition states that the fuser is "low."

  • Marvo2 May 11, 2010

    Hi, It's a fuser (heat roller) fault. Short answer is no, it's a tech replacement. The U4-2 is usually tied to fusers overheating so try turn off and allow it to cool for half an hour then start up again and see will it clear.. How did that work?



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Yeah, the U4 codes are from the fuser unit.. And no, it's not a user replaceable part..
I'd take it to any half decent printer repair place and see what they say. The 5320 is pretty old so I don't know what the current availability of spares is like..

Posted on Oct 14, 2009


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3 Answers

Why ar m201 sharp copier shows error h2 00

it means that the thermistor in the fusing unit is open

which could indicate that it may have become faulty or is because of power fluctuations, a simple crop 14 reset should remove the error, but if it returns it should be looked at by a qualified sharp technichian

Jun 11, 2014 | Sharp AR-5320 Black and White Copier

1 Answer

H2 code

Put on ur machine & go 2 ur display board & press the C button twice then ur display will go off then input figure 1 & 4 that is 14 then press the print button. if this fails then remove ur fuser unit & check d thermistor, clean any dirt b/w d fuser roller & the thermistor, u can test d thermistor by connecting the two terminal 2 ohms meter

Dec 04, 2013 | Sharp AR-5320 Black and White Copier

1 Answer

On power on it shows code h2-00

H2 Thermistor open detection
Thermistor defect

Mar 29, 2011 | Sharp AR-5320 Black and White Copier

1 Answer


'H2' indicates a problem with the thermistor (temperature sensor) in the fuser unit.

You can try resetting the code using the following key sequence:

C, [Pause key], 0, [pause key] - You need to press these keys in sequence within 5 seconds.

The display will change. Enter 14 then press the copy button.

The machine will then reboot.

Hopefully the machine will now work. If the code comes back make sure that the fuser unit is properly inserted. Check that there is no jammed paper blocking the connector. Locate the Thermistor and check that it is not damaged (hard toner can build up on it causing damage).

Hope this helps.

Jan 19, 2011 | Sharp AR-5320 Black and White Copier

1 Answer

Sharp copier showing code h200

H2 Thermistor open detection
Thermistor defect

Dec 20, 2010 | Sharp AR-5320 Black and White Copier

1 Answer

Sharp ar 5320 displayed error code h4 and it is blinking

Hello :

It's a bad component in the fuse. It could be a bad thermofuse or thermistor . Better to take it to a Sharp dealer . They should be able to repair it right and quickly .

good luck .

please don't forget to rate !

Apr 04, 2010 | Sharp AR-5320 Black and White Copier

1 Answer

Lack code ar 5320 black and white copier

enter the simulation mode:
"#" key Interrupt key "C" key Interrupt key
press 14 and START key
the copier should restart in most cases.

if not:
There is a problem in the fusing area, bad Thermistor, defective ThermalFuse, defective heating lamp.

Feb 01, 2010 | Sharp AR-5320 Black and White Copier

1 Answer

Xerox XC 1020 copier code H4

With "H4" flashing press:
1.Clear button
2.Auto button then again

3.Clear button
4.Auto button

It should be done quickly. If it's done quickly enough all lights on display should go off.

5.Enter number 14 (as if you are making 14 copies).
6. Press START/COPY button.

The machine goes back to normal. If not, thermistor on the fuser (heater) should be replaced.

Sep 02, 2008 | Office Equipment & Supplies

2 Answers

H2 Error

You have a thermistor open. That means that the device that reads the temperature in the fusing unit, has broken. You will need to replace the fusing unit to fix this problem. You could try a Sim 14 reset. Push P * C * then 14 then Start (the button you use to make copies) and it should reset the code. If not then replace the fuser.

Dec 31, 2007 | Sharp AR-5320 Black and White Copier

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