Faulty Program Sequence; Program Skips And Advances Too Quickly; Drying Stops In Mid-Program - Miele T300 Technical Information

T300 Series Clothes Dryer (Condenser)
6.9

Faulty Program Sequence

6.9.1

Program Skips and Advances Too Quickly

Faulty switching in the timer may occasionally cause the relay reed
contacts to burn and weld together. This leads to the program advancing
to the "Cool Air" position.
From the following Machine Nos.:
8968136 – T 366
8968640 – T 368 C
8969380 – T 369 C
9010901 – T 380
9013368 – T 382
A 1 kΩ protective resistor has been connected between contacts P7a of
the timer and 6/4 of the electronic unit and combined in the wiring
harness.
Electronic modules delivered to Spares Depts. Have had this resistor
added either retrospectively or during production. In this case there is no
resistor integrated in the wiring harness.
Electronic module EF 201 with protective resistor has Part no. 1752311.
Electronic module EF 202 with protective resistor has Part no. 1752331.
Electronic modules with this additional resistor can be used with wiring
harnesses where it is also present.
6.9.2

Drying Stops in Mid-Program

If the timer motor has too low a resistance then it may draw too much
current resulting in the protective resistor (combined in the wiring harness
or situated on the electronic module) burning through and causing an
open circuit.
Desired timer motor impedance ≥ 4 kΩ
Solution:
Change the timer and possibly also the electronic module.
63
Technical Information