Electrolux RM 4185 Original Betriebsanleitung

SERVICE- INSTRUCTION

Publications-No.:

599 47 22-58/4

replaces 599 47 11-18/1 T.D. RS 05/2000

Languag : English

AES II- Absorption Refrigerators

(only for built- in in motor cara an)

COOLING

3110

RM 4185

RM 4215

RM 4235

RM 4265

RM 4275

RM 4285

RM 4365

RM 4405

RM 4505

RM 4605

RM 4705

RM 4805

RM 5215

RM 5275

RM 5405

RM 6275

RM 6295

RM 6365

RM 6405

Table of Contents Page

1.0 Model Description 3

2.0 AES II System Function 3

2.1 Priorities 3

2.2 Switchover Times / Time Delays 3

2.3 Low Voltage peration 4

2.4 Tank Stop 4

2.5 Thermostat Sensor 4

3.0 Technical Descriptions 5

3.1 Block Diagram 5

3.2 Power Module Connections 6

3.3 Display Module 7

3.4 Power Module 8

3.5 Ignition Device 8

3.6 Thermocurrent Adapter 8

4.0 Installation 8

5.0 Troubleshooting 8

5.1 Diagnostics Mode 8

5.2 Error Analysis and Elimination 9

6.0 Wiring Diagram 11

7.0 Spare Parts Numbers 12

8.0 Ser ice Bulletins 13

9.0 Operation of AESII with solar 17

charging regulators

1.0 Model Description

2.0 AES II System Function

An AES II r frig rator independently s l cts b tw n th possibl n rgy sourc s of 230 V,

12 V, and gas. Th control l ctronics automatically nsur that th r frig rator is suppli d from

th n rgy sourc optimal at a giv n tim . You can not operate the refrigerator with more

than one energy source simultaneously. You may also not manually s l ct a c rtain n rgy

sourc . Th l ctronic th rmostat controls th r frig rator during "ON/OFF" op ration, ind p nd-

ntly of th n rgy sourc .

The basic function for the AES II is: cooling under all conditions. Th amount of voltag

appli d ach tim is th r for monitor d during l ctrical op ration (230 V or 12 V). If th volta-

g falls b low th r l vant limit valu s (200 V for mains pow r supply voltag and 11 V for batt ry

op ration), gas op ration is s l ct d (s low oltage operation). For its operation, the AES II

refrigerator requires a 12 V continuous plus supply to operate the control electronics.

Operation on a 24-V power supply is not possible.

2.1 Priorities

Th r frig rators s l cts th typ of n rgy according to th following prioriti s:

1) 230V: if th voltag > 200 V

2) 12V: if th motor is running (D+ signal from th g n rator) and voltag > 11V

3) Gas: if 230V is not pr s nt or < 200V, or 12V voltag < 11 V

2.2. Switcho er Times / Time Delays

Th following diagram displays th switchov r tim s b tw n th individual n rgy sourc s:

R frig rator Mobil

Tropicana

Sup r-Iso

with AES

(Automatic En rgy

S l ctor)

with

Int rior Light with doubl

Door Look

230V

Gas 12V

imm diat ly

15 min. (compar tank stop)

approx 20s c.

I.E.

approx 20s c.

2.3 Low Voltage Operation

Th so-call d "low voltag gas op ration" is an xc ption. If th l ctrical pow r supply voltag

in 230-V or 12-V op ration is insuffici nt to maintain th cooling op ration, th AES switch s to

gas op ration und r c rtain conditions. A y llow LED displays this stat . Th conditions for swit-

ching ov r to gas op ration ar d scrib d in S ction 2.2. If gas op ration is s l ct d du to low

voltag , th r frig rator r mains in gas op ration for 30 minut s to avoid a continuous switching

back and forth (oscillation) b tw n th n rgy sourc s. Aft r 30 minut s of gas op ration, th

l ctronics ch cks th appli d voltag at r gular int rvals. If th pow r supply voltag again

b com s suffici nt, th r frig rator again switch s to 230-V or 12-V op ration.

2.4 Tank Stop

Th AES l ctronics do s not b gin op rating th r frig rator on gas until th motor has b n

turn d off for 15 minut s to avoid an und sir d switchov r to gas op ration during a tanking

proc dur .

2.5 Thermostat Sensor

Th th rmostat s nsor consists of an l ctrical r sistor (NTC). Th r sistor is install d on th

vaporator cov r, but it do s not hav a dir ct conn ction to th vaporator coil. Th purpos is

to m asur th air t mp ratur s on th insid of th r frig rator. This is how th l ctronics

always controls th r frig rator at th t mp ratur that has b n s t onc , v n for changing

ambi nt t mp ratur s within th fram work of th unit's capacity.

Important:: Th s nsor must not com into dir ct contact with th aluminum vaporator (spac

s nsor is not an vaporator s nsor) to provid corr ct functioning.

The de ice goes into continuous operation if the thermostat sensor is defecti e.

Th rmostat S nsor

R f r nc valu of th s nsor:

Room t mp ratur in °C R sistanc (kOhm)

5° ca. 7,24

10° ca. 5,63

15° ca. 4,42

20° ca. 3,50

3.0 Technical Descriptions

3.1 Block Diagram

Th following diagram shows th AES II syst m compon nts:

Display Modul

Power Modul

Solar input 230 V~

12 V -

D+ (generator)

Reigniter Thermocurrent

adapter

Heating element DC

Heating element AC

3.2 Power Module Connections

Connection Type Definition

P1 I/ O Conn ction cabl display/ pow r modul

P2 I T mp ratur s nsor

P3 I/ O R ignit r

P4 O Lifting magn t

T1 O 12V DC lighting

T2 O 12V DC h ating l m nt

T3 I 12V DC pow r supply (+)

T4 I 230V AC

T5 O 230V AC h ating l m nt

T6 O 230V AC h ating l m nt

T7 I 230V AC

T8 I Ground

T9 I G n rator (D+)

T10 I Solar syst m

3.3 Display Module

Th display modul is locat d on th control frontplat of th AES II r frig rator.

You must op rat th pow r switch (A) to turn th d vic on.

Th AES function LED (B) th n lights up gr n, and th middl LED (E) lights up y llow to display

th s l ct d t mp ratur s tting.

You can us th mom ntary-contact pushbutton for t mp ratur s l ction (D) to chang th r fri-

g rator s ction t mp ratur s tting. Th low voltag LED (C) lights up y llow if th r frig rator

has s l ct d gas op ration to maintain th r frig rating capacity du to low voltag in an l ctri-

cal supply sourc (230 V or 12 V).

If th r is a fault during gas op ration (gas couldn't b lit, gas contain r mpty, tc.), th AES

LED (B) flash s r d. In this cas , th d vic do s not continu to cool. You must liminat th

gas fault and start th r frig rator again. (Us th pow r switch to switch th r frig rator off and

on again.)

Important:: If th r is a fault during gas op ration and you don't notic it b for th r frig rator

chang s to 230 V, for xampl , du to a priority chang , th AES LED (B) again chang s to

gr n until th cooling function has b n stablish d again. How v r, th n xt tim it wants to

chang to gas op ration, th fault is display d again, and gas op ration is not start d. Th r a-

son is that th r ar l gal r gulations that do not p rmit th d vic to carry out an automatic

r s t. If you hav a gas fault display d by a r d flashing AES LED (B), you absolut ly must

acknowl dg this gas fault by using th pow r switch to switch th d vic off and on again.

A Pow r switch

B AES op ration indicator GREEN: R frig rator working

flashing RED Fault in th gas op ration,

r frig rator not cooling.

C Low voltag LED YELLOW Rr frig rator in gas op rtion,

b caus th l ctrical pow r supply

voltag is insuffici nt.

D S nsor for t mp ratur s tting

E LEDs for displaying th s l ct d t mp ratur s tting

3.4 Power Module

Th pow r modul (A) is locat d on th backsid of

th r frig rator. A multicor cabl conn cts th

pow r modul and th display modul .

There are fuses to protect both electrical heating

cartridges located in the power module. All th

l ctrical compon nts for controlling th various op -

rating mod s ar locat d in this modul . Th

modul 's print d circuit board has b n s al d

compl t ly wat r tight to prot ct against

nvironm ntal influ nc s.

3.5 Reigniter

Th r ignit r is also locat d on th backsid of th r frig rator. Th pow r modul suppli s th

r ignit r3 with voltag . R f r to Publication Bull tin Numb r 599 4716-54/5 (Pag s 13-14) for

d tail d information about th ignition d vic s us d.

3.6 Thermocurrent Adapter

Th th rmocurr nt adapt r is locat d b tw n th igni-

tion fus and th th rmo l m nt coupling. Th pow r

modul controls th th rmocurr nt adapt r. Th adap-

t r s rv s to switch off gas op ration during th chan-

g from gas to anoth r op rating mod by int rrupting

th th rmocurr nt to th ignition fus .

4.0 Installation

To guarant th ord rly functioning of th AES II r frig rator, corr ct l ctrical

installation is absolut ly n c ssary.

Th 12-V conn ction to th batt ry must b a 2-pol conn ction.

Th conn ction cabl must b 6 mm2and b 10 mm2for gr at r l ngths.

Th D+ control input must b wir d from th g n rator to th 12-V supply t rmi-

nal (cabl cross-s ction 1 or 1.5 mm2, oth rwis 12-V op ration is not possibl ).

5.0 Troubleshooting

5.1 Diagnostics Mode

Th AES II syst m has a built- in diagnostics program us d to t st basic syst m functions.

Th t st program off rs th capability to switch th r frig rator d lib rat ly into c rtain op rating

stat s.

Th following t st s qu nc s ar availabl :

- S lf-t st for th display modul and pow r modul and for communication b tw n both

compon nts

- AC op ration (230 V) t st

- DC op ration (12 V) t st

- Ignition d vic t st

a) Preparations

Th AES II d vic must b conn ct d to a 230-V supply lin and a 12-V supply. You must con-

n ct a gas cylind r and op n th gas supply to t st th gas function.

b) Test execution

You must proc d as follows to arriv at diagnostics op ration:

1. Switch off th d vic

2. Pr ss th button for th t mp ratur s tting and k p this button d pr ss d. Us th pow r

switch to switch th d vic on.

3. K p th button for th t mp ratur s tting d pr ss d until th AES op ration LED switch s to

r d and diagnostics op ration b gins.

The AES operation LED is red during diagnostics operation.

A s lf-t st for both l ctronic modul s is first carri d out, and all th display modul LEDs ar

controll d onc . Th l ft t mp ratur LED th n lights up. Diagnostics op ration has s l ct d th

original position.

You can s l ct th following t sts wh n you activat th t mp ratur s l ction switch:

LED 1: All outputs ar switch d off, standby mod

LED 2: Mains pow r supply, 230-V h ating cartridg is controll d

LED 3: Lifting magn t, th rmocurr nt adapt r, and th ignition d vic * ar controll d

LED 4: 12-V op ration, 12-V h ating cartridg is controll d

LED 5: Ignition d vic is controll d

* Important: For saf ty r asons, it is possibl to control th lifting magn t just onc . If th lifting

magn t is controll d again, you must first switch th d vic off and th n start diagnostics

op ration again.

C) Terminating diagnostics operation

You can us th pow r switch at any tim to switch th d vic off and t rminat diagnostics op -

ration. If som on unint ntionally forg ts to switch off th diagnostics op ration, th d vic swit-

ch s back to cooling op ration aft r four minut s.

5.2 Error Analysis and Elimination

Errors according to priority:

Cause 1: Th lifting magn t do s not r main tight n d for th r quir d 20 s conds.

Th th rmo l ctric voltag is insuffici nt, and th ignition fus clos s.

Elimination 1: Exchang th l ctronic.

Cause 2: Th spark plug fir s v n though th r is a flam pr s nt (no flam r cognition).

Th l ctronics switch to fault aft r 25 s conds.

a) Th conn ction b tw n th spark plug and ignition cabl is d fici nt. (R f r

to Bull tin 599 4717-69/1, Pag 15.)

b) Th ignition d vic is d f ctiv . (S Bull tin 599 4716-54/5, Pag s 13-14.)

Eliminaion 2: Chanc th spark plug or th r ignit r.

1. Gas Operation

Error: Fault LED flashes red

Cause 3: Aft r th lifting magn t drops, th AES again tri s to ignit and th n go s to a

fault aft r 25 s conds. Is th th rmo l m nt on th th rmocurr nt adapt r

loos ?

Elimination 3: Hand-tight n th scr w conn ction (SW 8mm).

Cause 4: Th th rmo l ctric voltag is not suffici nt to k p th ignition fus op n. Th

r ason is du to w ar and t ar and compon nt tol ranc s, for xampl :

1. Bad th rmo l m nt (soot formation)

2. Th th rmocurr nt adapt r's int rnal r sistanc is too high.

3. Th holding curr nt for th magn tic ins rt for th ignition fus is too much.

Elimination 4: Exchang th th rmocurr nt adapt r and th ignition fus and/or

th rmo l m nt. (S Bull tin 599 4721-91/7, Pag 16.)

Cause 5: Th lifting magn t do s not pr ss th ignition fus down d ply nough, so

th r is no m chanical contact in th magn tic ins rt

Elimination 5: To ch ck aft r tight ning th lifting magn t, pr ss down on th r d ignition fus

button. If th flam stops aft r th lifting magn t drops, th lifting magn t or th

ignition fus must b adjust d.

In th factory s tting, th AESII l ctronics control th lighting. If th r is a lighting d f ct, first

ch ck th light. If th lighting do s not function v n if th light is intact, you must proc d as fol-

lows:

1. Disconn ct and insulat th whit

and y llow cabl on th conn c -

ting t rminal (A).

2. Conn ct th B and C conn ctions

of th conn cting t rminal tog th r

to t st th m.

If th lighting functions, us a

15-Ohm r sistor with

spar part numb r 295 1749-10/6 in

th conn cting t rminal as a

conn ction.

2. Interior Light

black black

brown white

12V-connection

Terminal block

black

white

red

white

Ground Ground

yellow

AES II

ELECTRONIC

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