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Overview of ECU (electronic control unit)
MPP
1- Flame detection
10- Water flow sensor
2- Ignition needle
11- Water inlet temperature sensor
3- Power plug
12- Water outlet temperature sensor
4- Fan 13- Thermal fuse
5- Remote controller 14- Thermostat
6- Water proportional vale 15- Gas valve
7- HMI 16- On-off valve
8- Wifi modulate
17- Segment valve A
9- Ambient temperature sensor 18- Segment valve B
Pict.29 – Electric Diagram MPP circuit board