On the superior line it is showed the day which is programming, the hour with the
functioning state.
On the below line the programmed hour are displayed.
Lower one means off, taller on means on, which also shows on superior line
Pressing the key the programming will finish.
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If showing following words, such as:
It means that there are some problem with vacuum Switch.
Such as door has not been closed properly
Combustion fan's speed should be up.
There is some leakage about the stove and so on.
It means that the high temperature sensor has some problem,
Such as: the switch is broken,
The temperature is too high that the stove runs not properly