Troubleshooting - STIEBEL ELTRON DHE Touch 18/21/24 Bedienung Und Installation

OPERATION

Troubleshooting

6. Troubleshooting
Problem
The appliance will not start despite the
DHW valve being fully open.
When hot water is being drawn off, cold
water flows for a short period.
Temperatures > 43 °C.
The appliance does not respond to the
mini wireless remote control, the red LED
illuminates on the mini wireless remote
control.
The device does not respond to the mini
wireless remote control, the red LED
illuminates on the mini wireless remote
control only faintly, or not at all.
The temperature cannot be increased.
"MAX" appears in the status bar.
The flow rate is too low.
The water temperature varies.
An incorrect function is called when you
tap the display.
There is no display on the touchscreen or
it responds to user inputs only slowly.
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Cause
There is no power.
The aerator in the tap or the shower head is
scaled up or soiled.
The water supply has been interrupted.
The air detector detects air in the water. It
switches off the heating output briefly.
Dynamic anti-scalding protection is activat-
ed.
The mini wireless remote control is not reg-
istered to the device.
The mini wireless remote control battery is
empty.
Temperature limiting maximum is enabled.
ECO function is enabled.
The wellness shower program is enabled
Display not calibrated correctly.
Incorrect programming unit function.
Remedy
Check the fuses/MCBs in your distribution board.
Clean and/or descale the aerator or shower head.
Vent the appliance and the cold water inlet line.
The appliance restarts automatically after 1 minute.
Dynamic anti-scalding protection automatically ceases 2 minutes after
draw-off has ended.
Register the mini wireless remote control again.
Replace batteries.
Disable Maximum.
Disable the ECO-function by tapping the symbol once.
Disable the wellness shower program.
Calibrate the display (see chapter "Function descriptions", "Settings / Pro-
gramming unit / Calibrate Touch-Display").
Isolate the appliance from the voltage supply for 20 seconds.
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