Question about Samsung CLP-550N Laser Printer

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How do I fix an Engine Fuser Low heat error on printer:

I do not know how to run a diagnostic of the printer software, as I read in one of the blogs, and the printer is not working due to an Engine fuser low heat error. Please help.

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Re: How do I fix an Engine Fuser Low heat error on...


Posted on Dec 31, 2007

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2 Answers

Error Engine Fuser low heat

possibly the fusers thermostat is displaced. it rides very close to the roller to get an accurate reading, look for 2 wires into a black "thing" toward the middle of the roller. this is a thermistor which sends its reading to the mainboard. check if the fuser is getting very warm, there is a thermo couple in series with the fusers power so it wont overheat but if its getting hot and the printer doesnt know it then the dammaged/displaced thermostat would be the thing to look for,

Sep 28, 2009 | Samsung CLP-600N Laser Printer

3 Answers

Dell 1600n low heat error

Remove the fuser lamp and put it back in place, it is not heating properly.

Apr 02, 2008 | Dell 1600n All-In-One Laser Printer

2 Answers

Samsung CLP-315 system error

Low heat error comes from the fuser unit, there is a thermostat on the fuser change that and it will work

Mar 29, 2009 | Samsung CLP 315 Laser Printer

1 Answer

Error Message-

there is a thermostat circuit that regulates the temperature of the fuser. A sensor reads its tempurator and something is out of wack -either the sensor or the sensor tempurature circuit .

Dec 21, 2008 | Samsung CLP-500 Laser Printer

3 Answers

Engine Fuser Low Heat Error

What this means is that the fuser is not reaching operating temperature. The most common reason for this failure is the xenon lamp inside the heat roller of the fuser has burned out. You can verify this by checking for continuity between the two contacts that connect to the lamp with an Ohm meter or digital multi meter.

If the continuity is good, the second most common reason for failure would be the LVPS, or low voltage power supply.

And last, although by far the least common reason for this error is the main logic board.

Have you checked to see if the unit is under warranty? If so, this would be a covered repair.

The part number for the fuser is listed below. Depending on your location and electrical system ( 110 or 220 )

ELA UNIT-FUSER 230V part number :JC96-03239A for use with 230V
ELA UNIT-FUSER 110V part number :JC96-03239B for use with 110V

Other then samsung, you can try a google search, and also an ebay search for the part number and find the best price for the item.

Good luck,


Nov 04, 2008 | Samsung CLP-510 Laser Printer

2 Answers

Engine Fuser Low Heat Error

ther is a prob in your fusing unit, chances are the thermistor is not working, if you can still feel some heat in this area, either the lamps are working fine but the sensing device fails to read the actual temp.

you need a tech to correct this prob

Jul 27, 2008 | Samsung CLP-510 Laser Printer

1 Answer

I am geeting error code 48 on my phaser 7750dn

that is a fan failure code, Either the Fuser fan ( most likely) behind the back cover near the front.Low voltage power supply fan or rear cover fan is not operating.
Most of the time it is the fuser fan that is not running or even if its running slow it will give you that error code.

Here are the notes
    Fan Failure Message (Code / Error 48)
    The machine logic detected a failure of the Fuser fan, LVPS fan or rear fan.
Solution: thumbsup.gif Fixed! thumbsdn.gif Did not fix.
  1. Insure there is adequate ventilation around printer. Refer to Section 1 of Service Manual for required clearances.
  2. Follow the procedure in Chapter 3 for this error.
  3. This problem can be very intermittent. Fans can work in diagnostics and fail in the middle of large print jobs. If unable to duplicate problem replace all 3 fans.
  4. Use service diagnostics to verify the Fuser, LVPS, and ROS fans. These fans have a third wire which provides feedback to the Engine Board.
  5. Visually check each or these fans for a build up of dust or toner.
  6. There is a correction to this procedure in the Service Manual. The fans that can cause this error are the Fuser, LVPS, and ROS(laser fan). Not the Rear fan. The rear and bottom (developer) fans are not monitored by the system and won't generate this error.
Parts that may resolve this issue are:
  • FAN REAR ASSEMBLY (Laser Fan) (25%)

May 05, 2008 | Printers & Copiers

3 Answers

Engine Fuser Low Heat Error


Nov 05, 2007 | Samsung CLP-550N Laser Printer

2 Answers

Engine Fuser Low Heat Error

there is a 2 wire device (thermistor) that rests against the fuser roller to measure the temperauture. if the fuser is getting quite hot, suspect the thermistor to be either dirty (remove and clean it with alcohol) or defective. if fuser not getting hot, then suspect burned out fuser heater (look inside fuser roller for a long light bulb).

Aug 28, 2007 | Samsung CLP-510 Laser Printer

3 Answers

Engine Fuser Low Heat Error

Basically the error message is telling you the printer cannot keep the fuser temperature at the proper temperature (too low). It could be a lot of things but typically it is due to a fuser assembly gone bad.

Feb 20, 2007 | Samsung ML-2551N Laser Printer

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