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Dear Its related to fusser temp. Check the fusser assy. thermostat it may open . either it may reset or replaced with new one. The error code mean-OPEN HEAT ERROR.
thanks
U1 is displayed on the LCD as a "no tap" symbol. (time out on fill is after 175 seconds)
Possible causes:
• Water turned off
• Insufficient water supply pressure
• Blocked water softener filter (if fitted)
• Spilt rinse aid causing over foam in tub
• Incorrect detergent being used
• Motor rotor
• The machine is siphoning
• Inlet valve has failed
• Controller
The Samsung printer error code u1-2320 is related to fuser that means the fuser unit fails. Need not to worry; this error can be encountered by many Samsung printer users. ... The Samsung printer error code u1-2320 is also the fuser error; this might be resolved just simply power off the printer.3
"U1 error code" means the unit has failed to prime with water within 3 minutes. Its taking longer than expected to fill with water. Check the fill valve,it might be due to water supply problem, or the spray arm might not be in the exact position place.Check the above to fix this error code.
You will need to replace the main drive motor assembly.
That stepper motor is a common fail item.
You have to remove the rear cover, the MFSYS and MCU board assembly to access that motor.
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