Dometic EA 330 Manual de Serviço descarregar pdf (Página 28)

When operated, the electronic measures the temperature of the indoor air

sensor (NTC) and controls depending on this, the heating efficiency of the

absorber with the help of the HiPro-Electronic .

Self-test of the electronics

After switching on the supply voltage (Hardware- Reset) the software

carries out a selftest, in which the value of resistance of the NTC-sensors

(air-sensor, evaporator sensor) are measured.

In case the value of the resistance measuring is not corresponding

to the values of resistance fixed by the software, an error is

signalized.

Automatic fault analysis

The type of error is signalised through n flashing impulses of the inner

lighting (P_LIGHT) as well as REDDOT_LED with a frequency of 0.5 Hz, as

shown in the following table:

Type of error Number of flashing impulses

general error electronic, power supply n = 0

everything OK / no poti connected n = 1

everything OK / poti connected n = 2

error NTC- Air-Sensor n = 3

error NTC- Evaporator-Sensor n = 4

error NTC- Air-Sensor + Evaporator Sensor n = 5

With the help of a reset you can see the fault signal (n) again.

In case an error is recognised (n>2), the temperature adjustment will not be

started, and the heating element will not be switched on.

The inner lighting and the Red-Dot will flash with ca. 4 Hz.

19.2

Air-Sensor

Evaporator-Sensor

The air-senosr is mark with

a red point!

19.3

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Dometic EA 330 Manual de Serviço Página 28