9
Troubleshooting
Is Cosy compatible with this hot water system?
Cosy support hot water in either Y-Plan or S-Plan congurations where a hot water tank is
present.
The LED on the switch is red - what is the problem?
The LED on the switch is red when:
• The rmware on the switch is being updated by the hub. This is normally the case when the
switch is rst installed.
• The switch has lost pairing with the hub. The switch comes pre-paired, which can occur if
the middle button has been held for many seconds. Try and turn the switch power o and
then on.
How do I re-pair the system?
The Cosy system comes pre-paired. To re-pair the system:
• On the display, press and hold the bottom button (O) and then press the reset button on
the base of the unit. Keep holding the O button until the display shows UNPAIRED DISPLAY.
• Press and hold the link button (
f
) on the hub for 3 seconds - LED will be ashing amber.
• On the display, press the top button (
d
) - the display will show the temperature (or
SWITCH ERROR if the switch is also unpaired).
• Press and hold middle button on the switch for 5 seconds - link LED (
f
) will ash red.
• Press and hold the link button (
f
) on the hub again for 3 seconds - LED will be amber.
• Once all the systems have properly paired, all link LEDs should be green and the display will
be showing the current temperature.
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