Dometic RM 8405 Service Manual download pdf (Page 14)

14

2.3 Burner Control device P810

Power supply : ca. 1.5 V ( only measurable if no

failure exists)

Measuring points : Flat plug

between Pin 6 and Pin 7

 activates ignition

 flame control and flame failure device

 controles gas valve ( closes valve if failure oc

cure)

The electronics regulates the function of the

components according to the selected energy,

e.g. power supply for the heating elements. In

addition the AES-power module ensures the

operating with the optimal energy source accor-

ding to the priority "230V AC - 12V DC - GAS".

It also controlles the low voltage operation at

230V AC (no low voltage op. at 12V DC mode),

and the "refuelling stop function" as well. The

temperature sensor and interior light are also

controlled by the electronics. The power modu-

le is protected with 1A fuse for 12 VDC.

No low-voltage-control during 12V mode at

RMD-models.

Measuring points:

electronics / power module

loosen contacts X108

cable white / brown

In case of a defective sensor, the fridge operates in

intervalls (45 min. ON; 14 min OFF).

2.2 Temperature sensor NTC

NTC - table of resistances

Temperature °C Resistance in kOhm

0 27.70

5 22.29

10 18.07

15 14.74

20 12.11

25 10.00

2.1.5 Operating principle

Differences power module RMD 8xxx to

RM 8xxx

 Controls are hidden behind the door; integra-

ted between freezer and cooling compart-

ment. Status is shown by blue LED (fridge

working) and red LED (error).

 In Auto Mode “AES” is shown on the display

(instead of “AU”).

 No electrical doorlock available.

 Frame heater activation via right button.

 Automatic switch off of the frame heater after

2 hours.

 Acoustic alarm limited to 1 minute, but

repeated every hour (if error has not been

reseted)

 Powermodul mounted on the lower back.

Access via lower ventilation grid.

Components

The functionality of RMD 8xxx models will

also be valid for RM 8xx1 and RM 8xx5

models probably starting with season 2010.

Fig. 21

8

1

+

= 1.5 VDC

-

7

6

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 49 50

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