Bosch T2400S 8 ND 23 Training And Service Information For After Sales page 24

- "E1" warning code must be shown blinking with a frequency of 2Hz, so the user is
aware that the water heater has automatically decreased power
Overview of ECU (electronic control unit)
1- Flame detection
2- Ignition needle
3- Power plug
4- Fan
5- Remote controller
6- Water proportional vale
7- HMI
8- Wifi modulate
9- Ambient temperature sensor
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MPP
10- Water flow sensor
11- Water inlet temperature sensor
12- Water outlet temperature sensor
13- Thermal fuse
14- Thermostat
15- Gas valve
16- On-off valve
17- Segment valve A
18- Segment valve B
Pict.31 – Electric Diagram MPP circuit board
6 720 887 546 "SM FP_ErP LPP-MPP Europe 2018/05 en"