Fujitsu AO G18KBTB Series Original Betriebsanleitung

SPLIT TYPE

ROOM AIR CONDITIONER

Cassette type

Models Indoor unit Outdoor unit

AUXG18KRLB

AUXG22KRLB

RCG18KRLB

RCG22KRLB

AO*G18KBTB

AO*G22KBTB

ROG18KBTB

ROG22KBTB

INVERTER

SERVICE

INSTRUCTION

2 . TROUBLE SHOOTING

CASSETTE type

INVERTER

Indoor Room Thermistor Error

Wired Remote Controller

Communication Error

Error Contents Trouble

shooting

02-01

2 ERROR DISPLAY

2-1 INDOOR UNIT AND WIRED REMOTE CONTROLLER DISPLAY

Serial Communication Error

External communication Error

Combination Error

Indoor unit address setting Error

Connection unit number Error

(Indoor unit Wired remote controller Error)

Indoor Unit Fan Motor Error

Indoor Heat Ex. Thermistor Error

Drain pump Error

1,2

Trip terminal L Error

Error

Code Error Contents Trouble

shooting

Error

Code

Manual auto switch Error 11

Indoor unit power supply Error

for fan motor

Indoor unit Communication circuit

(wired remote controller) Error

Indoor unit motor electricity

consumption detection Error

932

Indoor unit PCB model

information Error

Inverter Error

Outdoor unit main PCB model

information error

Trip detection

Discharge Thermistor Error

Outdoor Thermistor Error

Current sensor Error

Heat Ex. Outlet / Middle

Thermistor Error

Compressor rotor position

detection Error

Outdoor Unit Fan Motor Error

4-way Valve Error

Discharge Temp. Error

PFC circuit Error

1. If an error occurs, an error icon appears on the “Monitor mode screen”.

Touch the [Status] on the “Monitor mode screen”.The “Status” screen is displayed.

2. Touch the [Error Information] on the “Status”screen. The “Error Information”screen is displayed.

(If there are no errors, the [Error Information] will not be displayed.)

3. 2-digit numbers correspond to the error code in the table below. Touch the [Next page]

(or [Previous page]) to switch to other connected indoor units.

For the details of the indoor unit or outdoor unit error , refer to the error codes in each installation manual

Mode Set Temp.

Fri 10:00AM

Menu Monitor Back

Page 1/ 4 Page 1/ 5

Air Flow Direction

Economy

Individual Error Code

Address

[ 1 ] [ 02 01 ]

[ 14 . 15, 41 . 44 ]

[ ]

[ Off ]

Page

Error

Information

Status

Error Information

Fan

1. 2. 3.

Check the Error code on the wired remote controller (Remote controller *Option)

Check the Error LED display on the Indoor unit (IR Receiver *Option )

1. Check ECONOMY (Green) LED Blinking, it means the Error on the system. (Not brinking: No Error)

2. Count OPERATION (Green) LED blinks: The number of blinking means the first digit of Error code.

3. Count TIMER (Orange) LED blinks: The number of blinking means the second digit of Error code.

Ex.) ECONOMY: Blinking continuous / OPERATION: 4 times / TIMER: 1 time Indoor Room Thermistor Error

02-02

Trouble shooting 1

OUTDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause:

Indicate or Display:

YESYES

1. Connection failure 2. External cause 3. Main PCB failure 4. Outdoor unit fan motor failure

Check Point 1-1 : Reset the power and operate

Does Error indication show again?

Check Point 1-2: Check external cause such as noise

Check the complete insulation of the grounding.

Check if there is any equipment that causes harmonic wave

near the power cable (Neon light bulb or any electronic

equipment which causes harmonic wave).

Check Point 2 : Check Connection

Check any loose or removed connection line of

Indoor unit and Outdoor unit.

>> If there is an abnormal condition, correct it by

referring to Installation Manual or Data &

Technical Manual.

Check Point 3 : Check the voltage of power supply

Check the voltage of power supply

>> Check if AC198V (AC220V -10%) - 264V (AC240V +10%) appears

at Outdoor Unit Terminal L - N.

Check Point 4 : Check Serial Signal (Reverse Transfer Signal)

Check Serial Signal (Reverse Transfer Signal)

>> Check if Indicated value swings between AC90V and AC270V at Outdoor Unit Terminal 1 - 3.

>> If it is abnormal, Check Outdoor unit fan motor (PARTS INFORMATION 5)

>> If Outdoor fan motor is abnormal, replace Outdoor unit fan motor and Main PCB.

>> If Outdoor fan motor is normal, replace Main PCB.

When the indoor unit cannot receive the serial signal from Outdoor unit

more than 2minutes after power ON, or the indoor unit cannot receive

the serial signal more than 15seconds during normal operation.

2-2 TROUBLE SHOOTING WITH ERROR CODE

Serial communication error

(Serial Reverse Transfer Error)

Outdoor unit Main PCB

Outdoor unit fan motor

Error code : 11 Outdoor unit : No indication

RED

WHITE

BLACK

WHITE

02-03

Trouble shooting 2

INDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause:

Indicate or Display:

YESYES

1. Connection failure 2. External cause 3. Controller PCB failure

Check Point 1-1 : Reset the power and operate

Does Error indication show again?

Check Point 1-2: Check external cause such as noise

Check if the ground connection is proper.

Check if there is any equipment that causes harmonic wave

near the power cable (Neon light bulb or any electronic

equipment which causes harmonic wave).

Check Point 2 : Check Connection

Check any loose or removed connection line of

Indoor unit and Outdoor unit.

Check connection condition in control unit.

(If there is loose connector, open cable or mis-wiring)

>> If there is an abnormal condition, correct it by

referring to Installation Manual or Data &

Technical Manual.

Check Point 3 : Check the voltage of power supply

Check the voltage of power supply

>> Check if AC198V (AC220V -10%) - 264V (AC240V +10%) appears

at Outdoor Unit Terminal L - N.

Check Point 4 : Check Serial Signal (Forward Transfer Signal)

Check Serial Signal (Forward Transfer Signal)

>> Check if indicated value swings berween AC30v and AC130V at outdoor unit terminal 2 - 3.

>> If it is abnormal, replace Controller PCB.

When the outdoor unit cannot properly receive the serial signal from

indoor unit for 10 seconds or more.

Serial communication error

(Serial Forward Transfer Error)

Indoor unit Controller PCB

Error code : 11 Outdoor unit : No indication

RED

WHITE

BLACK

WHITE

02-04

Trouble shooting 3

INDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause:

Indicate or Display:

1. Connection failure 2. Wired Remote Controller failure 3. Controller PCB failure

Check Point 1 : Check the connection of terminal

After turning off the power.

Upon receiving the signal more than 1 time from Wired Remote or other Indoor

unit, but the same signal has not been received more than 1 minute

(3 Wire type), 2.5 minute (2 Wire type)

Wired Remote Controller

Communication Error

Indoor unit Controller PCB

Wired Remote Controller

Error code : 12 Outdoor unit : No indication

Check the connection of terminal berween Wired Remote Controller and indoor unit,

and check if there is a disconnection of the cable.

Check & correct the followings.

Check Point 1-2 : Check Wired Remote Controller and Controller PCB

Check Voltage at CN14 of Controller PCB. (Terminal 1-3, Terminal 1-2)

(Power supply for the Remote Control)

>> If it is DC12V, Remote Control is failure. (Controller PCB is normal) >> Replace Remote Control

>> If it is DC 0V, Controller PCB is failure. (Check Remote Control once again) >> Replace Controller PCB

Check Point 2 : Wire installation Wrong RCgroup setting

Wrong wire connection in RCgroup (Please refer to the installation manual)

The number of connecting indoor unit and Remote controller in one RCgroup were less than 16 units.

Check if controller PCB damage.

Change controller PCB and check the Error after setting remote controller address.

Check Point 2-1 : Check Indoor unit controller PCB

Trouble shooting 5

INDOOR UNIT Error Method:

External communication error

Detective Actuators: Detective details:

Forecast of Cause :

OKOK

External communication error

Check any loose or removed connection of between the controller PCB to the external I/OPCB

>>If there is an abnormal condition, correct it by refer to installation manual or

the technical manual.

Check the condition condtion on the external I/O PCB and the controller PCB

(If there is loose connector, open cable or mis-wiring)

After receiving a signal from the external I/O PCB,

the same a signal has not been received for 15sec

1. Connection failure 2.External I/O PCB failure 3.Controller PCB failure

Check Point 1 : Check the connection

Check Point 2: Replace external I/O PCB

If Check Point 1 do not improve the symptom, change External I/O PCB.

OKOK

Check Point 3: Replace Controller PCB

If Check Point 2 do not improve the symptom, change Controller PCB.

Indicate or Display:

Error code : 18

02-06

Outdoor unit : No indication

Trouble shooting 6

INDOOR UNIT Error Method:

Detective Actuators: Detective details:

1. The outdoor unit receives the serial signal of applied refrigerant

information from Indoor unit. When the refrigerant is R410a.

2. When the outdoor unit type is multi.

Forecast of Cause:

Combination error

Indoor unit

1. The selection of indoor units is incorrect

Check Point 1 : Check the type of indoor unit

Check the type of the connected indoor unit.

>> If abnormal condition is found, correct it.

Check Point 2 : Replace Main PCB

If Check Point 1 do not improve the symptom, replace Main PCB of Outdoor unit.

Indicate or Display:

Error code : 23

02-07

Outdoor unit : No indication

Detective Actuators:

Wired remote controller ( 2-Wire )

Indoor unit Controller PCB circuit

Detective details:

When the address number set by auto setting and manual setting are

mixed in one RC group.

When the duplicated address number exists in one RC group.

Check Point 3 : Check Indoor unit controller PCB

Forecast of Cause :

1. Wrong wiring of RCgroup 2. Wrong remote address setting 3. Indoor unit controller PCB failure

4. Remote controller failure

Check Point 1 : Wire installation

Wrong wire connection in RCgroup (Please refer to the installation manual)

Change controller PCB and check the Error after setting remote controller address

Check if controller PCB damage

Check Point 2 : Wrong RCgroup setting

The given address number by auto setting (00) and the manual set number (Except 00)

were not existing in one RCG.

The remote controller address setting by U.I. were not existing same address.

The duplicated address number is not existing in one RCgroup

Trouble shooting 7

INDOOR UNIT Error Method:

Indoor unit address setting error

Indicate or Display:

Error code : 26

02-08

Outdoor unit : No indication

02-09

Trouble shooting 8

INDOOR UNIT Error Method:

Connection unit number error (Indoor

unit in Wired remote controller system)

Detective Actuators:

Wired remote controller ( 2-Wire )

Indoor unit Controller PCB circuit

Detective details:

When the number of connecting indoor units are out of specified rule.

Forecast of Cause :

1. Wrong wiring / Number of I.U, RC in RCgroup 2. Indoor unit controller PCB defective

Check Point 1 : Wire installation

Wrong number of connecting indoor unit

Check Point 2 : Check Indoor unit controller PCB

Check if controller PCB damage

Check if controller PCB and check the Error after setting remote controller address

Indicate or Display:

Error code : 29 Outdoor unit : No indication

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