Miele T 9800 Descriptive Technical Documentation page 46

031-4
8
9
Fig. 2
At the start of the drying process, the flame sensor (B1/16) is in a cool state and
closed.
Gas solenoid valve (Y57/2) is not carrying voltage and is therefore closed.
At the demand for heating, both heater relays 1K1/1 and 2K1/1 close.
Maintaining coil and booster coil of gas solenoid valve (Y57/1) carry voltage
solenoid valve (Y57/1) opens, ignitor electrode (E1/1) receives voltage and slowly
starts to glow.
Since not both gas solenoid valves (Y57/2) and (Y57/1) switched in sequence are
open, gas does not yet flow.
Fig. 3
Once the heat radiance on flame sensor (B1/16) is strong enough, the thermostat
opens.
Now the ignitor electrode (E1/1) no longer carries voltage. However now the gas
solenoid valve (Y57/2) receives voltage via the low ohmic ignitor electrode (E1/1)
and the gas solenoid valve (Y57/2) opens.
This information should not be duplicated or passed on without Miele approval. All rights reserved.
Temperature limiter (1F1, 2F1)
Flame sensor (radiance sensor B1/16)
Descriptive Technical Documentation
DTD no. 12-9800
gas
05.12.2006, US_am