Gree GC201808-III, Service Manual

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GREE GMV5 HR HEAT RECOVERY UNITS
92
Two wired controllers controlling multiple IDUs
When two wired controllers control multiple IDUs, the wired controllers can be connected to any IDU
which is in the same series. Set of the two wired controller to the secondary wired controller. The number
of IDUs controlled by the wired controller cannot exceed 16. All connected IDUs must be in the same
network.
The secondary wired controller can be set in start-up or shutdown mode.
(1)
Press the “FUNCTION” button for 5 seconds on the wired controller to be set as the secondary
wired controller. The temperature area displays “C00”. Continue to press the “FUNCTION”
button for 5 seconds, the parameter setting interface is displayed and the temperature area
displays “P00”.
(2) Select code P13 b
y pressing “ ” or “ ”. Press the “MODE” button to switch to parameter value
setting. When the parameter value flickers, select code 02 by pressing “ ” or “ ”. Then press
the “ENTER/CANCEL” button to finish setting.
(3)
Users can press the “ENTER/CANCEL” button to return to the previous level till parameter
setting exits.
The parameter setting list is shown below:
Parameter
code
Parameter
name
Parameter scope
Default
value
Remark
P13
Set up address
for wired
controller
01: master wired
controller
02: slave wired
controller
01
When two wired controllers control one or
multiple IDUs, the addresses of the controllers
must be different. The secondary wired controller
(address: 02) does not support unit parameter
setting except setting of its address.