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12.TROUBLE SHOOTING GUIDE
WARNING
Before checking the inside of the HAKKO FR-811 or replacing parts, be sure to disconnect the power
plug. Failure to do so may result in electric shock.
● The unit does not operate when the
power switch is turned on.
● “S-E”is displayed
● “H-E”is displayed
● “F-E”is displayed
● When the S button is pressed, the
unit does not operate. (AUTO mode)
● Profile can not be read from USB
memory. Profile error occurs.
● “BHE”is displayed
Is the fuse blown?
Investigate why the fuse blew and then replace the fuse. If
the cause can not be determined, replace the fuse. If the fuse
blows again, send the unit in for repair.
Is the sensor broken?
Measure the resistance value of the sensor. When the resistance
value is ∞, replace the heater.
Is the heater broken?
Measure the resistance value of the heater.When the resistance
value is not within the normal range, replace the heater.
Is the location of measurement for the thermocouple inappropriate
or is the thermocouple mounted improperly?
Mount the thermocouple to an appropriate location of measurement.
The fan may be broken. Replace the fan with a new one.
Is the setting not connected to the bottom heater in a state of ON?
Connect it.
There is a possibility that the data is in damaged or unreadable
format. Please prepare the format of the data that can be read.
Is the selector switch off?
Turn on the selector switch.
Is the heater burned out?
Measure the resistance of the heater. If the heater has an open
circuit, replace the heater.
Is the setting for the heater power alert too low (set to too short a time)?
Change the heater power alert to an appropriate setting.
Is the location of measurement for the thermocouple inappropriate
or is the thermocouple mounted improperly?
Mount the thermocouple to an appropriate location of measurement.
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