84
NO hW BUT Ch ON
85
NO DIspLay
NO
connected securely?
NO
Connect the wiring from the terminal block to the
NO
Replace the
User Interface
L
N
Is ribbon cable damaged?
Replace ribbon cable
NO
NO
Is the red neon
illuminated on the turbine
sensor?
valve motor connectedand is continuity OK?
Check diverter head fully engaged and clip
Is diverter stuck in the CH position
Is the 230VAC present at the brown wire of actuator?
Is Boiler DHW OK?
NO
Change diverter Valve cartridge - rear section
NO
NO
Reconnect wiring or replace
NO
Re-engage diverter
head and secure clip to
wateset
NO
NO
Is hot and cold
pipework crossed?
NO
NO
Is the wiring connected
sensor?
Remove the turbine, and
check for debris in the
DHW OK?
NO
Re-connect wiring
NO
Replace turbine sensor
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