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On completion of the initial settings, if a central remote device or BMS interface is to be used on the
system leave the electrical connections U3 & U4, (Uh) "DISCONNECTED", apply power to the installation
in the following order.
(Note:, Power must be applied to the outdoor units for a period of 12/24 hours BEFORE running the
system for the first time, (This will energies the crankcase heaters), to avoid addressing errors or issues,
at the lead outdoor unit, disconnect the two core cable connected on terminals U1 & U2, (Uv).
After 12/24 hours, power down the outdoor unit/s, re-connect U1 & U2, then following the sequence
below.)
a) Apply power to all the indoor units. (Local wired remote controllers - (where installed), will display
either "Setting" or "A Timer symbol
" depending on model of remote installed, this will stay being
displayed until the system has completed configuration.)
b) Apply power to the outdoor units.
c) At the lead outdoor unit after approx. 1 minute, the display will read,
U1-Err(U.1.flash) and L08 alternately at 1 second intervals.
d) Press SW06, this will start the automtic addressng procedure.
The display will automatical scroll through and display AUTO 1 - AUTO 2 - AUTO 9
Setting is completed after approx 10-15 minutes and the display changes to U.1.- - - (U.1. flash)
fig 20
-10-
Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
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