Grohe Tectron 37749, Quick Start Manual, Page: 6 / 9

6
3. Disconnect plug-in connectors from the electronics
module (E) to the solenoid valve (D) and to the
transformer (F), see Fig. [19].
4. Remove screws (E2) and holder (E3), see Fig. [20].
5. Replace old electronics module (E4) and assemble new
electronics module in reverse order on plate (E),
see Fig. [20].
6. Connect solenoid valve (D) and battery box (F)
to electronics (E), see Fig. [6].
Assemble in reverse order.
Replacement parts, see fold-out page I
(* = special accessories)
Care
For directions on the care of this fitting, refer to the
accompanying Care Instructions.
Fault/ cause/ remedy
Fault Cause Remedy
No flushing • Water supply interrupted - Open isolating valve in wall connection
box
• Filter in solenoid valve blocked - Clean or replace filter,
see Cleaning or replacing filter
• Plug-in connector without contact - Attach plug-in connector
• The detection zone of the sensor system
is set too low/too high
- Increase/reduce detection zone using
remote control
(special accessories 36 206)
• Solenoid valve defective - Replace solenoid valve,
see Replacing solenoid valve
• Transformer faulty - Replace transformer,
see Replacing transformer
• Electronics defective (indicator
lamp not flashing or permanently on)
- Replace electronics,
see Replacing the top plate
with electronics
Water flowing continuously • Solenoid valve defective - Replace solenoid valve,
see Replacing solenoid valve
Undesired flushing • The detection zone of the sensor system
is set too high
- An opposite object will be detected.
Reduce detection zone using remote
control (special accessories 36 206).
Flow volume too low • Flow volume set too low - Adjust flow volume,
see Setting the flow volume
• Filter in solenoid valve blocked - Clean or replace filter,
see Cleaning or replacing filter
• Solenoid valve defective - Replace solenoid valve,
see Replacing solenoid valve
Flow volume too high • Flow volume set too high - Adjust flow volume,
see Setting the flow volume
• Solenoid valve defective - Replace solenoid valve,
see Replacing solenoid valve