RESISTANCE FLOW SWITCH HARNESS

Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to Resistance

Disconnect inline connector to flow switch

Measurement:

Measure the resistance between pins 1 and 2 on connector X8
to the corresponding pins on the flow switch connector (see note)
Expect continuity / zero resistance on each test.
Also visually inspect the condition of the harness.

vm vitodens 100 24kw system.con x8 x9 on pcb.gif

vm vitodens 100 24kw system.lower components.gif

vm vitodens 100-w 35 compact fls conn x20.gif

Note.
If there is no flow switch fitted on the appliance then select 'Resistance as expected and harness in good condition'