VRV-III System Operation-Tr VRV-III System Operation-Trouble Shootingouble Shooting

8/10/2019 VRV-III System Operation-Tr VRV-III System Operation-Trouble Shootingouble Shooting

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A system with the high capacity needed to suit large-sized buildings


2/19

V R VV R VV R VV R V

VVVVariableariableariableariable RRRRefrigerantefrigerantefrigerantefrigerant VVVVolumeolumeolumeolume

REGISTERED TRADEMARKREGISTERED TRADEMARKREGISTERED TRADEMARKREGISTERED TRADEMARK


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System Operation


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13A S/S/O 13A S/S/O 13A S/S/O 13A S/S/O

TPN

ISOLATOR

Power Supply Configuration

Single Phase power supply

3 ph

power Supply


5/19

Individual Remote Controller,

Wired & Wireless Options

= up to 500 m length

Controls Configuration

INDIVIDUAL

up to 500 m


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4. Intelligent Control System4. Intelligent Control System4. Intelligent Control System4. Intelligent Control SystemLCD REMOTE CONTROLLER(WIRED & WIRELESS)

LCD screen

Auto Swing Mechanism Air Flow

Temperature Setting

ON/OFF Timer

Filter Sign

80 Malfunction CodeDisplay

Group Control Display


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INV INV INVSTD

STD

STD

1 2 3

Duty Cycling of Compressors

Operating period of inverter

compressor in Unit 1 issignificantly longer thancompressors in units 2 & 3.

Inverter Compressor inUnit 1 has shorter life.

Cycle start-upsequence by

running time.

Equalises

compressorrunning time.

Extended life of

Inverter comp.

Conventional SystemAlways startsInverter Compressor

in unit 1 first. 1 2 3

3 1 2

2 3 1


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Dependable and comfortable

Because the VRV III units are rotated within the

system at least once every eight hours,averaging out the running time of each outdoor unit.

This system extends the life of the system as a whole.

Auto-rotation system

extends life ofequipment

With VRV III

When every unit

getsa chance to rest,

none of them getsworn too quickly.


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Back-up Function - Single

INV

Compressorbreaks down

BrokenAlarm isindicated

STOP

STOP

Back-up byfield setting R

UN


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INV

INV

Running

INV

Back-up Function - Multiple

Even though VRV compressor failure rate is extremely low,the back-up function will give further peace of mind.

Alarm isindicatedon the RC

Back-up by fieldsetting

INV

IN

V

INV

Continue runningStop

The brokencompressor

can berepairedwhile theremaining

units are stilloperating.

(Only appliesto multiple

units)

Compressorbreaks down Broken


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Brief Trouble-shooting


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Self-diagnosis Function- to Quickly Cope with Errors

Correct display of errors amounting to74 items in the system

Error code

display Run lamp

Unit No.

Inspection display

Errors related with indoor unit: 14

Errors related with outdoor unit: 32

Errors related with control/wiring: 16

Central Control4

HRV8


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Operation lampIndoor Unit No.

Error CodeInspection

Display

Troubleshooting by Remote Controller

Self-diagnosis by Wired Remote Controller

Troubleshooting by Remote Controller

Self-diagnosis by Wired Remote Controller


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Ref: Si38-304; pg174

Overview of Malfunction CodesOverview of Malfunction Codes

System still operate during the indication of error code

Malfunction

code

Operation

Lamp

Inspection

Display

Unit

No.

Malfunction Content Page

Referred

Indooru

nit

A0 Error of external protection device 178

A1 PCB or E2PROM defect 179

A3 Malfunction of drain level sys. (33H) 180

A6 Fan motor(MF) lock, overload 182

A7 Malfunction of swing flap motor(MA) 183

A9 Malfunction of EXV (20E) 185

AF Drain level above limit 187

AH Malfunction of air filter maintenance -

AJ Malfunction of capacity setting 188

C4Malfunction of thermistor (R2T) for heat

exchanger189

C5 Malfunction of thermistor (R3T) for gaspipe

190

C9Malfunction of thermistor (R1T) for air

inlet191

CJ Malfunction of thermostat sensor in RC 192


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Ref: Si38-304; pg174


Malfunction

code

Operation

Lamp

Inspection

Display

Unit

No.


Referred

Outdooru

nit

E1 PCB defect 193

E3 Actuation of HP switch 194

E4 Actuation of LP switch 195

E5 Compressor motor lock 196

E6 STD compressor lock or over current 197

E7 Malfunction of outdoor unit fan motor 198

E9 Malfunction of EXV (Y1E ~ 3E) 200

F3 Abnormal discharge pipe temp. 202

F6 Refrigerant overcharge 203

H3 Malfunction of HP switch -

H4 Actuation of LP switch -

H7 Abnormal outdoor fan motor signal 204

H9Malfunction of outdoor air thermistor

(R1T)205



16/19

Ref: Si38-304; pg174


Malfunction

code

Operation

Lamp

Inspection

Display

Unit

No.


Referred

Outd

oorunit

J2 Current sensor malfunction 206

J3Malfunction of discharge pipe thermistor

(R31 ~ 33T)207

J5Malfunction of suction pipe thermistor

(R2T)208

J6Malfunction of heat exchanger thermistor

(R4T)209

J7 Malfunction of header thermistor -

J8Malfunction of oil equalizing pipe

thermistor (R7T)-

J9Malfunction of receiver gas pipe

thermistor (R5T)210

JA Malfunction of discharge pipe pressuresensor

211

JCMalfunction of suction pipe pressure

sensor212



17/19

Ref: Si38-304; pg174 & 17


Malfunction

code

Operation

Lamp

Inspection

Display

Unit

No.


Referred

Inverterunit

L0 Inverter system error -

L4 Malfunction of INV radiating fin temp rise 213

L5 INV comp motor grounding / short circuit 214

L6 Comp motor coil grounding / short circuit -

L8 INV current abnormal 215

L9 INV startup error 216

LA Malfunction of power unit -

LCMalfunction of transmission btw INV &

control PCB217

P1 INV over-ripple protection 219

P4Malfunction of INV radiating fin temp rise

sensor220



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Ref: Si38-304; pg17


Malfunction

code

Operation

Lamp

Inspection

Display

Unit

No.


Referred

Sy

stem

U0LP drop due to refrigerant shortage or

EXV failure221

U1 Reverse phase / open phase 222

U2Power supply insufficient or

instantaneous failure223

U3 Check operation not conducted 225

U4Malfunction of transmission btw indoor &

outdoor unit226

U5Malfunction of transmission btw RC &

indoor unit228

U5Failure of RC PCB or setting during

control by RC228

U7Malfunction of transmission btw outdoor

unit229

U8Malfunction of transmission btw master &

slave RC

231

U9Malfunction of transmission btw indoor &

outdoor unit in the same sys.232

UA Excessive no. of indoor units 234



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Ref: Si38-304; pg17


Malfunction

code

Operation

Lamp

Inspection

Display

Unit

No.


Referred

S

ystem

UC Address duplication of CRC 235

UEMalfunction of transmission btw CRC &

indoor unit

236, 240,

246

UFRefrigerant system not set, incompatible

wiring / piping238

UHMalfunction of system ,refrigerant system

address undefined

239

CRC&

Sched

uleTimer

M1 Or PCB defect 241, 248

M8 OrMalfunction of transmission btw optional

controllers for centralize control242, 249

MA OrImproper combination of optionalcontrollers for centralized control

243, 250

MC Or Address duplication, improper setting 245, 252


VRV-III System Operation-Tr VRV-III System Operation-Trouble Shootingouble Shooting

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