Miele G 7881 Service Manual

2.3 Temperature Limiter F2 (Thermostat) 329°F (165°C)
Temperature limiter F2 is connected electrically in series between the heating
connection and the two heater relays, 1K1/1 and 2K1/1. Its capillary tube is
located in the cabinet on heater elements R2 and R3. The temperature limiter
cuts out when the heater element's external temperature rises above 329°F
(165°C). After the temperature has dropped, the limiter doesnotreset
automatically. It must be manually reset. See Resetting Temperature Limiter...

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Fig. 2:Filter Combination
1 Coarse filter
2 Fine filter
3 Microfine filter, mesh size 0.01”(0.25mm)
4 Large surface area fine filter, perforation diameter 0.04”(1mm)
The circulating wash water is filtered via 2 parallel paths. A portion of the water
flows through the central opening of the coarse filter and then passes through the
microfine filter. The remainder passes directly through the large surface area fine
filter (030 Fig. 2, Pos. 4). All water is then mixed together again in the sump,
where it...

3 Fault Repair
3.1 Temperature Limiter F2 (Thermostat) Has Cut Out
Cause
The heater relay contacts (1K1/1 or 2K1/1) have fused together.
Remedy
ACheck the heater relay contacts for continuity when they are not activated.
AIf continuity exists, replace the appropriate relay. See Heater Relay Removal,
080 4.2.
Cause
Excessive foam developed in suds.
Remedy
ACheck the quantity of rinse aid dispensed.
AUse a different rinse aid.
3.2 Repetitive Heater Element Fault in Cabinet
Symptom
Short circuit and/or body...

4 Service
4.1 Checking the Heater Element
AService Panel Removal, 022 4.2.
AToekick Removal, 010 4.6.
ACheck the heater elements for continuity at temperature limiter F2. Measure
from contacts 32, 22 or 12 for one heater element in each case to neutral (star
point, 080 Fig. 5, Pos. 1).
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Note
This only applies to star-formation connections with 3N AC. It does not apply if
the heater elements are connected in delta formation.
4.2 Resetting Temperature Limiter F2 (Thermostat)
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Danger!
Whenever the toekick...

Fig. 3:Safety Thermostat AFK3 G-A (Stiebel Co.), F2
AService Panel Removal, 022 4.2.
AToekick Removal, 010 4.6.
ADisconnect the connection plugs.
ARemove the retaining screws (030 Fig. 3, Pos. 2, Pos. 8).
AOpen the door and release the clips holding the capillary tube onto the heater
elements (030 Fig. 4, Pos. 1).
ACarefully pull the capillary tube downwards out of the cabinet feed-through
hole (030 Fig. 4, Pos. 2).
AInsert the new capillary tube. Apply a little grease or sealant around the
cabinet...

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Fig. 4:Temperature Limiter Routing
Note
When reinstalling the temperature limiter, ensure that the capillary tube connects
between heater elements R2 and R3. It should not be connected to heater R1,
as R1 is used for drying.
4.4 Replacing the Capillary Tube Feed-Through Hole
ARemove the capillary tube; see Replacing Temperature Limiter F2
(Thermostat), 030 4.3.
AHold the locknut under the cabinet with a suitable wrench and loosen the
feed-through inside the cabinet.
AFor reassembly, see 030 Fig. 3,...

4.5 Heater Element Replacement
AOpen the door and loosen the appropriate heater element holder.
ARemove the appropriate heater element central screw in the cabinet.
ALift the heater element, complete with rubber seal, upwards to remove.
AWhen re-installing, ensure that the heater element seal completely seals the
heater element hole in the cabinet.
Descriptive Technical Documentation
030-10 DTD no. 62-7881
This information should not be duplicated or passed on without Miele approval. All rights reserved....

041 Hot/Cold Water Intake, Water Softener
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Descriptive Technical Documentation
DTD no. 62-7881 041-1
18.09.2013, US_am This information should not be duplicated or passed on without Miele approval. All rights reserved. 

1 Technical Data
Solenoid Data
Valve VoltageFlow
PressureFlow RateConnection Hose
Length
1)Threaded Union
Cold
water
(Y1)1N AC 220/
240 V 60Hz29 - 145 psi
(2 - 10 bar)2.1 gal/min
(7.5 L/min)5.6' (1.7m) 3/4"
Hot
water
(Y12)1N AC 220/
240 V 60Hz29 - 145 psi
(2 - 10 bar)2.1 gal/min
(7.5 L/min)5.6' (1.7m) 3/4"
Table 1:WaterProof System Data (as per Parts CD)
1)The standard WaterProof System hose can be replaced with a 14.8-foot (4.5-meter) version.
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Water Softener
Weight Without...

2 Function
2.1 Water Connection
–Connection to the water supply may be made directly without the need for
additional safety measures (e.g., a non-return valve), as these machines are
built to comply with German DVGW (water authority) guidelines.
–If hot water is not available, both hoses must be connected to the cold-water
supply via a Y-piece.
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Fig. 1:3/4" Y-Piece
–The required flow pressure must be at least 10 pounds per square inch, or 0.7
bar. If pressure is below 10 pounds per square inch, then...