Wascomat Washer-Dryer Error Code 74: Short Temp Outp. Sensor
Code 74 on the Selecta II dryer program unit means the thermistor measuring air outlet temperature, or its wiring, has shorted. This is E 04 in the Selecta II manual. A technician follows the Selecta II service manual.
Medium: the dryer cannot judge drying without the outlet reading and stops.
What does Wascomat error 074 / short temp outp. sensor mean?
The Selecta II program unit in Wascomat washer-dryers WD4130 and WD4240 measures the temperature of the air leaving the drum with an outlet thermistor. Comparing the outlet air with the inlet air tells the unit how dry the load is. If the outlet thermistor or its wiring shorts, its resistance collapses, and the unit shows ERROR 074 / SHORT TEMP OUTP. SENSOR, listed as E 04 in the Selecta II manual. Without a believable outlet temperature the unit cannot judge drying, so it stops instead of guessing. The manual points to the Selecta II service manual for the steps. This code applies only to those dryer units and has no connection with the Compass washer codes listed on other pages.
Affected models and control systems
The dryer program unit (Selecta II) of Wascomat washer-dryers WD4130 and WD4240 only.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- ERROR 074 / SHORT TEMP OUTP. SENSOR appears on the dryer display
- The dryer stops during the drying cycle
- Loads come out damp because the cycle ended early
- The code comes back each time the dryer starts
Possible causes
Likely causes — what usually sits behind error 074 / short temp outp. sensor on this control. A technician confirms which one it is before any part is replaced.
- Sensor wiring damaged by heat near the drum outlet, causing a short
- Lint packed around the outlet sensor and its connector
Safe checks before calling for service
- Switch the dryer off and let it cool completely.
- Clean the lint filter and check that the exhaust path is free.
- Restart a short program to see whether the code returns.
- Note the model, the code and the program when it appeared, and call us without opening any panel.
How a technician diagnoses error 074 / short temp outp. sensor
- Read the code and confirm it is E 04 in the Selecta II table.
- Follow the Selecta II service manual for the outlet sensor circuit.
- Measure the outlet thermistor resistance at room temperature.
- Inspect the wiring from the sensor to the program unit for a short.
- Check the connector for lint, heat damage or moisture.
- Replace the thermistor or wiring only after the short is confirmed.
- The outlet sensor sits in a hot, linty exhaust path where wiring is hard to reach.
- Testing the circuit is done near heaters and mains wiring.
- Exact test values come from the Selecta II service manual.
How error 074 / short temp outp. sensor differs from similar codes
Code 74 is the outlet counterpart of code 73, which reports a shorted inlet thermistor. Code 88 is the open-circuit outlet case.
Technical reference
- Maker documentation
- Wascomat owner support
- Edition
- 438 9228-61/EN, 2011.08.25
- Models / control
- Compass Control dryer unit (DLCU dryer program unit)
- Section
- Troubleshooting, Error codes from DRYER PROGRAM UNIT, 'Only for WD4130, WD4240' (manual pp. 110, 138-139)
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related Wascomat washer error codes
Can I keep drying with code 74?
We would not. The unit stops because it cannot read outlet air temperature, and ignoring that could overdry laundry.
Does this affect the washer part?
No. It belongs to the dryer program unit of the WD4130 and WD4240.
Where is the outlet sensor?
It measures air leaving the drum. A technician finds and tests it.
Need help with Wascomat error 074 / short temp outp. sensor?
A technician confirms the cause on site and gives you the price in writing before any work starts.