Gree GMV-N12U/C-T(U) Owner's Manual page 45

2) Signal from AHU-KIT adapter to the third party controller
Type of
Function
interface
Operating
Dry
status of
contact
AHU-KIT
Defrosting Dry
status of unit contact
Error status of
Dry
ODU and
contact
AHU-KIT
Connect
to XT5 (1)
(2) Definition for input signal of temperature setting
AHU-KIT adapter provides the relation of direct and inverse ratio between DC 0-10V input
voltage signals of and the corresponding set temperature. Select the direct and inverse ratio
relation between the input voltage and the corresponding set temperature according to the second
bit of "S2" dial code on the mainboard. The specific settings are as below:
S2
1 2 3 4
1 0 0 0
1 1 0 0
1) Setting of dial code
Correctly dial the code switch to the right position, it is not allowed to dial to the middle
position. Dialing the switch to "ON" direction refers to "0", and the objective direction refers to "1",
as shown below (NOTICE: the black part is the dial lever):
Wiring Wiring
board number
XT4 2、3
XT4 4、5
XT4 6、7
XT4
AHU error Operating Defrosting
status
Relation between input voltage and set temperature
Direct ratio between input voltage and set temperature
Inverse ratio between input voltage and set temperature
Description of signal
When it is connected, it means the AHU-KIT is on; when it is
disconnected, it means the AHU-KIT is off. (The input
terminal cannot be connected to strong power and
recommended voltage is 24V or less.)
When it is connected, it means the unit is in defrosting
status; when it is disconnected, it means the unit is not in
defrosting status. (The input terminal cannot be connected to
strong power and recommended voltage is 24V or less.)
When it is connected, it means the unit has error; when it is
disconnected, it means the unit is normal. (The input terminal
cannot be connected to strong power and recommended
voltage is 24V or less.)
Error Interface of
status status auxiliary
electric
heating
Fig.6.3.2
41
AHU-KIT
Interface
of fan