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Troubleshooting / protection & error codes
The device may show error codes in certain circumstances – these codes could signify a fault, or may be an alert to protect the
device form damage.
Code Description Analysis / Action
E001 Abnormal input voltage No fault – consult electrician
E002 Output over current See note 1 or contact supplier
E101 Heat sink over heat See note 1 or contact supplier
E102 Heat sink sensor error Contact supplier
E103 Master drive board error See note 1 or contact supplier
E201 Circuit board error Contact supplier
E202 Master board EEPROM reading failure Contact supplier
E203 RTC time reading error Contact supplier
E204 Keyboard EEPROM reading failure Contact supplier
E205 Communication error Contact supplier
AL01 Auto speed reduction against high temperature See note 2
Note 1: When the cause resulting in error code E002/E101/E103 lifts, the device will resume working correctly – however this
pattern will only repeat for three occasions – on the fourth occasion the device will stop working. To resume operation, turn off all
power, then re-establish power and re-start the unit. If problems persist contact your supplier for assistance.
Note 2: AL01 is not an error indication. When this code appears, the device will automatically switch to a lower speed to self-
protect against internal high temperatures. When the temperature drops back to 65°C the inverter will resume at the pre-set speed.
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