Dometic RH423LDA, RH439LDAG, RH423LDAG, RH439D, RH449LD Service Instructions Manual
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Service Instructions
RH423LDA RH423LDAG
RH439LDA RH439LDAG
RH449LD
RH439D RH449D
Freestanding and built-in absorption refrigerators
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Table of Contents:
1. The appliance ............................................................................... 3
1.1. Description .................................................................................... 3
1.2. Warning ........................................................................................ 3
1.3. Spare parts, electrical connection diagram ................................... 3
2. Assembly and repairs ................................................................... 4
2.1. Tools ............................................................................................. 4
2.2. Cabinet, door ................................................................................ 5
2.2.1. Reversing the door hang .............................................................. 5
2.2.2. Changing feet ............................................................................... 7
2.2.2.1. Front feet .................................................................................... 7
2.2.2.2. Rear feet ..................................................................................... 7
2.2.3. Replacing the flange ................................................................... 8
2.2.4. Replacing the door lock .............................................................. 9
2.2.5 Replacing the door plate ............................................................. 10
2.3. Electrical equipment ................................................................... 12
2.3.1. Operation .................................................................................... 12
2.3.1.1. Description ................................................................................. 12
2.3.1.2. Self-test ...................................................................................... 12
2.3.1.3. Defrost ........................................................................................ 12
2.3.1.4. Checking the cooling unit (CUC) ................................................ 13
2.3.1.5. Checking the Automatic Door Control (optional) function ........... 13
2.3.1.6. Temperature control ................................................................... 13
2.3.2. Assembly .................................................................................... 14
2.3.2.1. Replacing parts under the light cover ......................................... 14
2.3.2.1.1. Replacing the assembled optical sensor .................................... 15
2.3.2.2. Checking and replacing parts connected to
the Fuzzy controller .................................................................... 16
2.3.2.2.1. Replacing the evaporator sensor ................................................ 16
2.3.2.2.2. Replacing the temperature sensor ............................................. 18
2.3.2.2.3. Replacing the heating cartridge .................................................. 19
2.3.2.2.4. Replacing the Automatic Door Control LED ............................... 22
2.4. The cooling unit .......................................................................... 23
2.4.1. Replacing the cooling unit .......................................................... 23
2.5. Information .................................................................................. 24
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1. The appliance
1.1. Description
The appliance is a fluid absorption system freestanding or built-in refrigerator, with a
capacity of 23, 24.5 or 30 liters.
The internal container may be set to two different temperatures (+3°C and +5°C)
between environmental temperatures +16°C and +32°C in the case of the
refrigerators fitted with a Fuzzy III motherboard and a four-button remote control.
Appliances fitted with a so-called reduced-capacity motherboard do not have an
interior temperature control feature.
The appliance is furnished with an integrated electronic control, including the interior
temperature control, the cooling unit control, automatic door control, automatic
defrost and light control. Appliances without lighting are not furnished with the
automatic door control function.
1.2. Warning
- Do not perform any repairs or cleaning on the device when the power plug
is connected to the wall socket!
- The appliance is designed to be operated by adults!
- Always operate the appliance in accordance with the operating manual!
- Any repairs that involve the disassembly of electrical parts should only be
performed by an authorized service person!
- Certain parts of the cooling unit remain hot after switching off for an
extended period of time. Be careful when repairing these parts!
- After repairs involving the disassembly of the electrical circuit or replacing
the cooling unit, make sure to execute an electrical insulation resistance
test! (see 2.3.2.2.)
- Only appliances with the proper qualifications should be connected to the
electrical supply!
- It is recommended to use safety gloves in operations involving injury to the
hand!
- In order to avoid damage to the appliance, during repairs the cabinet
should be placed on a soft underlay (felt, foam).
1.3. Spare parts, electrical connection diagram
Spare parts lists and electrical connection diagrams are listed by Product number at
http://www.electrolux-ti.com.
Warning!
Parts in need of replacement during repairs may only be replaced by parts identical
to the original, chosen from the spare parts list! Using parts not originally
manufactured by DOMETIC shall result in the loss of guarantee.
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2. Assembly and repairs
2.1. Tools
Figure 1
Recommended tools:
- combination pliers size 160, 2 pieces
- magnetic screwdriver handgrip
- screwdriver bit marked Pz 1
- screwdriver bit marked Pz 2
- crosshead screwdriver marked Ph 1
- flat screwdriver 120 * 5
- flat screwdriver 100 * 4
- spanner size 14
- testing apparatus for 1000 V electrical insulation resistance
- electrical continuity tester, or resistance measuring (universal) apparatus
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2.2. Cabinet, door
2.2.1. Reversing the door hang
When refitting, take care not to break the lower hinge bolt!
- Remove the screws of the upper door hinge (Figure 2)
- Remove the screws of the upper door hinge cover cap (Figure 3)
Figure 2 Figure 3
- Open the door, pull out the upper door hinge by tilting the door Figure 4)
Figure 4 Figure 5
- Put aside the door hinge, unhook door from lower door hinge (Figure 5)
- Remove lower hinge cover cap. Use a flat screwdriver. (Figure 6, 7)
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Figure 7 Figure 6
- Relocate door fulcrum bolt along with spacer ring to left fastening foot (Figure 8)
- Place door on fulcrum bolt (Figure 9)
Figure 8 Figure 9
- Place hinge which comes with the refrigerator into upper left door hinge hole on
door, restore plastic cover, and fasten with 2 screws (Figure 10, 11)
Figure 11 Figure 10
- Restore door hinge cover cap to upper right aperture, then fasten with screw
(Figure 12, 13)
Figure 13 Figure 12
- Make sure that the door can be opened smoothly and that it seals properly.
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2.2.2. Changing feet
2.2.2.1. Front feet
- Remove foot extension pieces by removing each screw (Figure14)
- Remove fastening feet by screwing each lot of 3 screws (Figure 15)
Figure 14 Figure 15
There are some appliances that are fitted with only fastening feet. The size of such
foot at the back is naturally smaller.
- Remove cables of red-dot from the fastening feet, where applicable.(Figure 16)
Figure 16
2.2.2.2. Rear feet
- Remove rear feet by removing each lot of 2 screws (Figure 17)
- In the case of small feet, remove the rear feet by removing each screw (Figure
18)
Figure 17
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Figure 18
2.2.3. Replacing the cowl
- Turn the cabinet on its door, on an appropriate protective underlay. (Figure 19)
- Remove 2 lower screws fastening the cowl (Figure 20, 21), while the rest of the
screws need only loosening, in order that the cowl can be slid from under the
screw. (Figure 22)
Figure 19 Figure 20
Figure 21 Figure 22
- Remove cowl, then restore the replacement part by sliding it under the screws.
(Figure 23)
Figure 23
- Tighten and restore screws. During tightening check that the cowl and the skirt
are level. If necessary, correct.
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