E16
De Dietrich
Heater Relay Stuck / Triac Fault
Dryer shows E16 and may not heat correctly; temperature seems unstable.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Stuck heater relay on PCB, Shorted heater triac, Burnt PCB tracks in heater circuit, Intermittent control board fault
How to Fix / Troubleshooting
Safety first: Unplug the dryer before opening the control panel. Only attempt board inspection if you are comfortable working around electronics.
- Observe behavior: Note whether the dryer overheats or never heats. A stuck-on relay can cause overheating; a stuck-off relay causes no heat.
- Inspect control board: Remove the control panel to access the main PCB. Look for burnt areas near the heater relay or triac, or signs of arcing.
- Check heater wiring: Ensure that the heater is not shorted to ground, which can damage the control components. Test with a multimeter.
- Board replacement: If physical damage is visible or E16 persists, replace the main control board. Component-level repair is not recommended for non-professionals.
- Verify thermostats: After board replacement, confirm that all thermostats and NTC sensors are functioning to prevent repeat failures.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
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