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A manual resetting high temperature control switch is installed in the steam generator for over-heat
protection. If temperature of inner tank exceeds 115 °C accidentally, the switch will automatically
disconnect power supply to heating element. In this case, it is necessary to disconnect the power
supply to steam generator, and then carefully check heating elements, water level sensor, relay on
sub-board and water supply pipeline after steam generator completely cool down. The temperature
switch could only be manually reset after the fault has been located and solved.
Diagnosing procedure:
i. The AIO controller can show the status of the steam generator working.
ii. If the generator can fill in and drain out water properly but does not heat up, please check
the connection wire between main circuit board and the sub-board, the relays on sub-board,
and heating elements.
iii. If water comes out from the steam outlet pipe seriously, please clean or change the outlet
solenoid valve.
iv. If the system keeps on heating up even if the current temperature is more than 2 °C above
the setting value with the indicator on, carefully test the relays on the sub-board and change
the faulty ones, or change the whole sub-board.
The above fault diagnosis and troubleshooting can refer to the function of the following main
board indicators.
D24: 12V power supply
D34: 5V power supply
D22: drain OFF
D26: drain ON
D23: water fill in
D18.19.20: heating
elements
D14: descaling
D15: salt spray generator
D16: Fan
D11: aroma pump A
D12: Aroma pump B
D27.28: APP
D29:30:Controller
Please refer to the circuit and connection diagrams for diagnosing and repair.
Do cut off the power supply before repair.
If problems still cannot be solved by the procedures listed above, please contact the dealer.
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