Use and Care Manual
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7┃TROUBLESHOOTING
Problem
Reason
Measure
It has noise when
original charged with
electricity
Due to the structure stress
of the heat insulator.
It is a normal
phenomenon.
Don't worry about it.
The surface of the
device was slightly
raised.
Due to the thermal
expansion of the surface
material.
It is a normal
phenomenon.
Don't worry about it.
The surface of the
heating device is slightly
warm.
1. The voltage is low.
2. In a low-temperature
environment.
1. Install a voltage
regulator.
2. It is normal.
8┃MAINTENANCE & SERVICING
Activities required before starting maintenance
Warning of electrical voltage
Do not touch the mains plug with wet or damp hands.
• Hold onto the mains plug while pulling the power cable out
of the mains socket.
• Allow the device to cool down completely.
Warning of electrical voltage
Tasks which require the heater housing to be opened
must only be carried out by authorized specialist
companies.