Miele T 80 Series - F3 - Short Circuit in Fill-Ring NTC (1 R30); F4 - Open Circuit in Fill-Ring NTC (1 R30)

Technical Information
52
T 80xx
Cause:
Heater relay (1K1/1, 2K1/1) defective.
Remedy:
Check the heater relay (1K1/1, 2K1/1).
Cause:
Temperature limiter (F2) defective.
Remedy:
Check temperature limiter F2 for continuity.
Note:
To delete this fault indication, disconnect the dryer from power.
3.9 F3 - Short Circuit in Fill-Ring NTC (1R30)
Symptom:
“Hand Iron” LED flashes.
Program stop.
Cooldown.
Buzzer intermittently for 2 minutes.
Only the “Cold air” program works.
Cause:
Short circuit in fill-ring NTC (1R30). Short circuit: Fill-ring NTC resistance >
320°F (160°C); refer to Table 030-2.
Remedy:
1. Check the wiring harness of the fill-ring NTC for short circuits.
2. For the fill-ring NTC characteristic curve setting, refer to Table 030-2.
Note:
To delete this fault indication, disconnect the dryer from power.
3.10 F4 - Open Circuit in Fill-Ring NTC (1R30)
Symptom:
“Hand Iron” LED flashes.
Program stop.
Cooldown.
Buzzer intermittently for 2 minutes.
Only the “Cold air” program works.
Cause:
Open circuit in fill-ring NTC (1R30). Open circuit: Fill-ring NTC resistance <
-5°F (15°C); refer to Table 030-2.
Remedy:
1. Check the wiring harness of the fill-ring NTC for an open circuit.
2. For the fill-ring NTC characteristic curve setting, refer to Table 030-2.
Note:
To delete this fault indication, disconnect the dryer from power.