ECR International COMBI 115 Installation, Operation And Maintenance Manual page 139

FAU LT SO LU T I O N SECT I O N S
PCB connector x22 Hall
With water running
effect sensor terminals.
Is main water filter and
through DHW circuit,
L
YES Check the voltage is YES YES Check DHW NTC YES
assembly clean and
measure red and white
Replace PCB
approximately 5 VDC senor for proper OHM
rotor free to move?
wire for 2.8 VDC for
between the Red and
value
flow triggering.
Blue wires. See Wiring
Diagrams.
N O N O N O
N O
Replace Hall Effect Sensor
Clean or Replace Replace DHW NTC sensor
Replace PCB
5 1
PN 240013694 REV. A [09/01/2022]