Question about Sharp AR-164 Copier

1 Answer

Sharp ar-164 - Displays "h4"

Hi our copy machine at our small office is not working. If you can help me be the one who saves the day I would appreciate it! On startup it just displays the error: "H4" (flashes an 'h' and then a '4', over and over). I have looked around online to no avail. Tried reset codes, none appear to be the correct ones. What is needed to be done with this machine?

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  • Contributor
  • 41 Answers

This error means:
heat roller abnormally low temperature.
for reset:
clear key --> interrupt key --> "0" key --> interrupt key --> 14 --> start key

Posted on Jul 26, 2012

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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sir fixalot
  • 146 Answers

SOURCE: Sharp AR-M237 Error Code H4-21

-H4-21 means:Sub heater lamp abnormally low temperature detection. The setup temperature (about –25°C: Sim 43-1-1) is not reached within the specified time (about 32sec) from turning on the power ON SW. (When the temperature falls below 140°C in the standby mode.)
-Causes:
Sub heater thermistor defect
Sub heater lamp failure
Sub thermostat failure
Control PWB failure
-Check the sub heater lamp blinking with SIM 5-2-2.
When the lamp blinks normally: Check the thermistor and the harness. Check the MCU PWB thermistor input circuit.
When the lamp does not light: Check for disconnection of the heater lamp and thermostat. Check the interlock switch. Check the power PWB and the MCU PWB lamp control circuit.
Clear the display of self-diagnostics with SIM 14.
The H4 errors will not reset by themselves. You must enter service mode to reset this error even if the problem has been repaired. The reset process is outlined below (DO NOT USE ANY OTHER FUNCTIONS IN SERVICE MODE):
Press the following sequence: "#/P" "*" "C" "*"
Type in 1 4
Press start
hit 1 for yes
hit start
Unit should power off and the restart.
If the error code recurrs ther are other problems.

Posted on Jun 06, 2008

  • 62 Answers

SOURCE: Error code H4-01

This mean you have low temp. on heat lamp 2 program interput clear interrupt 14 print may clear this code. if not you can look at the fusing unit and reset thrmo breaker that may be pop off.

Posted on Jul 30, 2008

Bubbabear64
  • 2794 Answers

SOURCE: HELP, H4 ERROR

The fuser isn't heating up on time. You could try turning the copier off for 30 seconds and turing it back on again to see if it goes away.

If it doesn't happen, there is a part that has to be fixed on the fuser to correct the problem. Usually it is the thermistor.

Posted on Aug 17, 2008

007tech
  • 95 Answers

SOURCE: dispays h4 error

An H4 error code indicates trouble in the fusing section - a certain temperature has not been reached within a specified time. It could mean a dirty/bad thermistor or dirty/bad thermostat (both inside the fuser unit. Make sure both of these are clean and there is not debris/paper stuck inside the unit.
You can try resetting the code by : Get into SIM mode by pressing the following keys one after the other "#" "interupt" "C" "interupt" then enter 14 and the start key - confirm if requested then make sure the copier restarts.
Hope this helps.

Posted on Apr 18, 2009

007tech
  • 95 Answers

SOURCE: system error H4-00

H4 indicates a heating problem in the fuser. The roller never reached a specific temp. Make sure the fuser is free of any left over paper pieces (maybe from a paper jam). Check to make sure its clean.
Try reseting the the error in service mode.
To enter the test command mode, press the keys as
follows one after the other :
[#] key [*] key [C] key [*] key then enter 14 and press start/copy key. this clear error counter. make sure to restart copier afterwards.

Posted on May 20, 2009

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H4 indicates a heating problem in the fuser. The roller never reached a specific temp. Make sure the fuser is free of any left over paper pieces (maybe from a paper jam). Check to make sure its clean.
Try reseting the the error in service mode.
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Your Tech is correct in replacing the Unit.
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The time and money it takes to repair the unit is greater than replacing.
Oredering all the parts for the unit takes longer then ordering the unit.

The only thing a tech can do is clean the Thermistor, reset with sim 14..
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I personally carry this Fuser Unit in my car stock as this happens frequently..

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