C325G - Gree R410A and C-S Series (New R32 Gas Type)

Owned by Alex Murphy
Last updated: 06 Sept 2024 by Shahab
3 min read

Gree Compatibility:

Current Firmware Version - 1.3

Gree are using the same model numbers for their new R32 Gas type units, please see this link to find about the compatible module and wiring diagram. https://izone.atlassian.net/wiki/x/AQAPF

CODE

SENSOR TYPE

CONNECTION

C325G v1.3

RA ONLY

A/B - Polarity Critical

SERIES & kW

INDOOR

OUTDOOR

Single phase R410A Gas Type

GUD###PHS/B-S

GUD###W/NHB-S

ATTENTION: Above models requires Gree proprietary controller for setup

SERIES & kW

INDOOR

OUTDOOR

American Design R32 Gas Type

GUD###PHS1/C-S

GUD###W1/NHC-S

Single phase R410A Gas Type

  1. Connect the Gree proprietary wired controller to the FCU PCB

  2. Enter the service mode parameters

To enter Service Mode, power must be connected to the unit and proprietary wired controller, and the unit must be switched 'OFF' at the wall control. Follow the steps below and refer to the function and parameter setting table

  1. As per the instructions set the sensor to return air for all modes

  2. Set the iZone control setting

  3. Set the required static pressure setting

  4. Cycle the power to the AC unit

  5. Connect a 2 core, twisted pair control cable from the C225 / C325G X / Y to CN1 in the fan coil unit

Service Mode Parameter Table

Function Display

Function Description

Parameter Display

Parameter Description

0

Temp sensor location

 

Ensure set to '01'

 

01

Sensor at return air for all modes

02

Sensor at wired control for all modes

03

Sensor at return air for cool, dry & fan modes, at wired control for heat mode

10

iZone control

 

Ensure set to '01'

00

Standard control

01

iZone control setting

11

Indoor fan power setting

 

Factory default '05'

Adjust to suit installed static

Low static = '01'

High static = '09'

 

 

 

 

 

 

ESP (Pa)

High Speed

Low Speed

01

10

5

1

02

20

6

2

03

30

7

3

04

40

8

4

05

50 (default)

9

5

06

75

10

6

07

100

11

7

08

150

12

8

09

200

13

9

Indoor fan coil unit PCB: Note connector CN1

Connector and short cable provided: Insert the connector and short cable (see image below) into the connector CN1. Note the correct polarity for X & Y. Polarity is critical

C225 AC unit connector: Connect AC unit cable from fan coil to C225 as indicated

Polarity is critical: Make sure it is wired in accordance with these instructions on both the CN1 connector on the fan coil PCB and the C225 cable connector

Cable from CN1: Connect a shielded, 2 core, twisted pair cable to the connector and short cable provided

C-S Series (New R32 Gas Type)