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Top of Support & Service > MAINTENANCE/TROUBLESHOOTING/APPLICATION EXAMPLES > An error code appears on the display of the HF-600

An error code appears on the display of the HF-600

If the buzzer sounds and an alphabetic error code is shown on the display while using an HF-600, please confirm the following.

Disconnect the power plug from the outlet, and start checking and taking action.
Please contact the store of purchase or Hakko's official distributor if the error does not disappear after you take the necessary action.

Display	Point to be checked / How to handle
Soldering iron error	Is the handpiece plug about to be disconnected from the unit(station)? Is the handpiece plug about to be disconnected from the unit(station)? Connect the handpiece plug to the unit (station) firmly. Is an incompatible handpiece other than FU-6001 and FU-6002 connected? Is an incompatible handpiece other than FU-6001 and FU-6002 connected? After confirming the handpiece is correct, connect the handpiece plug to the unit (station) firmly.
Tip error	Is a wrong tip other than the TX1, TX2, TX3 series, which is applicable for the HF-600, attached to the soldering iron? Is a wrong tip other than the TX1, TX2, TX3 series, which is applicable for the HF-600, attached to the soldering iron? If so, replace it with the one from the TX1, TX2, TX3 series.
Sensor error	Is the soldering tip inserted into the handpiece properly until it stops at the end? Is the soldering tip inserted into the handpiece properly until it stops at the end? Insert the soldering tip firmly until it stops at the end. Is the heating element/sensor disconnected? Is the heating element/sensor disconnected? Measure the resistance between the heating element and sensor, and if the measured value is abnormal, replace the tip. 【Measurement point/Normal resistance value】 TX1： 4.0Ω±10%（at room temperature） TX2： 3.4Ω±10%（at room temperature） TX3： 2.0Ω±10%（at room temperature）
Low temperature alarm	The error code is displayed and the buzzer sounds when the tip temperature drops below the set temperature range while soldering. e.g. Temperature setting: 350℃, Low temperature alarm: 50℃ It warns with an error code and sound when the sensor temperature in the tip becomes lower than 300℃. Please also check whether no poor soldering occurs due to insufficient heat when getting an error notice. Is the tip size suitable for the soldering object? Is the tip size suitable for the soldering object? If the tip size is too small for the soldering object, the tip temperature drops too much due to the poor thermal capacity of the tip. Replace the tip with one that size is suitable for the soldering object. Click here for more information. How to select the right shape and size of the tip for micro soldering Please contact the store of purchase or Hakko's official distributor if you get in trouble with the low temperature alarm.
Heater terminal short circuit error	Do you use a Hakko genuine soldering tip? Do you use a Hakko genuine soldering tip? Use Hakko's genuine soldering tip.
Abnormally high temperature error	Heating function is abnormal. Heating function is abnormal. Turn off the power switch. Wait for the tip to cool down. Then, turn it back on. If the problem persists, replace the tip.
Zero-cross error	The station may be broken. The station may be broken. Please ccontact your local distributor or dealter where you purchased the product.

Please contact the store of purchase or Hakko's official distributor if you cannot solve the problem by trying the above.