LG MFL67452452, LMU420HHV, A5UW36GFH0, LMU360HHV A6UW42GFH0 Service Manual

Please read this manual carefully before operating your set and retain it
for future reference.

E-View
Multi Air Conditioner
A5UW36GFH0 [LMU360HHV]
A6UW42GFH0 [LMU420HHV]

P/NO : MFL67452452

SERVICE MANUAL

AIR
CONDITIONER

- 2 -

Copyright ©2017 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

1. Specification

Note:

1. All data are based on the following conditions:

- Cooling Temperature : Indoor 26.7°C(80°F) DB / 19.4°C(66.9°F) WB
Outdoor 35°C(95°F) DB / 23.9°C(75°F) WB

- Heating Temperature : Indoor 21.1°C(70°F) DB / 15.6°C(60.1°F) WB
Outdoor 8.3°C(46.9°F) DB / 6.1°C(43°F) WB

- Piping Length : Interconnected Pipe Length = 5 m (16.4 ft)

- Difference Limit of Elevation (Outdoor ~ Indoor Unit) is Zero.

2.

Wiring cable size must comply with the applicable local and national code.

3. Due to our policy of innovation some specifications may be changed without
notification.

4. Sound Level Values are measured at Anechoic chamber.
Therefore, these values can be increased(maximum 3dB(A)) owing to ambi­ent conditions during opration.

** : The unit could be operated on the followig temperature range only when Low

Ambient Kit installed.

- Cooling : Outdoor Temperature -20°C(-4°F) ~ -10°C(14°F) DB

Model Name

A5UW36GFH0
[LMU360HHV]

A6UW42GFH0
[LMU420HHV]

Capacity

Nominal Btu/h Class 36,000 42,000
Cooling Min~Rated~Max Btu/h 15,600~36,000~47,400 15,600~42,000~54,500
Heating Min~Rated~Max Btu/h 17,940~41,000~51,600 17,940~45,000~55,800

Power Input

Cooling Min~Rated~Max kW 0.98~2.40~3.80 0.98~3.00~4.34
Heating Min~Rated~Max kW 1.28~2.93~4.05 1.28~3.29~4.53

EER / COP Non Ducted - 15.0 / 4.1 14.0 / 4.0

SEER / HSPF

Non Ducted - 21.0 / 11.5 20.5 / 11.0

Mixed - 19.3 / 11.0 19.8 / 10.8

Ducted - 17.5 / 10.5 19.0 / 10.5

Power Supply

V, Φ, Hz

208/230, 1, 60 208/230, 1, 60

Running Current

Cooling Min~Rated~Max A 5.3~13.0~20.7 5.3~16.3~23.6
Heating Min~Rated~Max A 7.0~15.9~22.0 7.0~17.9~24.6

Starting Current

Cooling Max A - ­Heating Max A - -

Wiring Connections

Power Supply Cable (Included Earth) No. x AWG 3C x 8 3C x 8
Power and Communication Cable(Included Earth)

Outdoor ~ BD Unit No. x AWG 4C x 16 4C x 16

Combination

Sum of Indoor Units Capacity Max kBth/h 48 56
Number of Indoor Units Max EA 5 6
Number of BD Units Max EA 2 2

Casing Color - Warm Gray Warm Gray

Dimensions

W x H x D mm 950 x 1,380 x 330 950 x 1,380 x 330
W x H x D inch 37-13/32 x 54-11/32 x 13 37-13/32 x 54-11/32 x 13

New Weight kg(lbs) 101.0 (222.7) 101.0 (222.7)

Compressor

Type - Twin Rotary Twin Rotary
Model Model x No. GPT442MBA x 1 GPT442MBA x 1
Motor Type - BLDC BLDC
Motor Output W x No. 4,000 (at 60Hz) x 1 4,000 (at 60Hz) x 1

Refrigerant

Type - R410A R410A
Precharged Amount g (oz) 5,600 (197.5) 5,600 (197.5)

Chargeless-Pipe Length

Main Pipe m (ft) 5 (16.4) 5 (16.4)

Branch Pipe m (ft) 40 (131.2) 40 (131.2)

Additional Charging Volume

Main Pipe g/m (oz/ft) 50 (0.54) 50 (0.54)

Branch Pipe g/m (oz/ft) 20 (0.22) 20 (0.22)

Control - Eclectric Expansion Valve Eclectric Expansion Valve

Refrigerant Oil

Type - FVC68D FVC68D
Charged volume cc x No. 1,300 x 1 1,300 x 1

Heat Exchanger (Row x Column x Fins per inch) x No. -

(2 x 32 x 14) x 2
(1 x 32 x 14) x 2

(2 x 32 x 14) x 2
(1 x 32 x 14) x 2

Fan

Type - Propeller Propeller
Air Flow Rate m

3

/min(ft3/min) x No. 60 (2,119) x 2 60 (2,119) x 2

Fan Motor

Type - BLDC BLDC
Output W x No. 124.2 x 2 124.2 x 2

Sound Pressure Level

Cooling Rated dB(A) 54 54
Heating Rated dB(A) 57 57

Sound Power Level Cooling Rated dB(A) - -

Piping Connections

Liquid Outer Dia. mm(inch)

Φ 9.52 (3/8) Φ 9.52 (3/8)

Gas Outer Dia. mm(inch)

Φ 19.05 (3/4) Φ 19.05 (3/4)

Piping Length

Total Piping Max. m (ft) 145 (475.7) 145 (475.7)
Main Piping Max. m (ft) 55 (180.4) 55 (180.4)
Total Branch Piping Max. m (ft) 90 (295.3) 90 (295.3)
Each Branch Piping Max. m (ft) 15 (49.2) 15 (49.2)

Maximum Height
Difference

Outdoor Unit ~ Indoor Unit Max. m (ft) 30 (98.4) 30 (98.4)
Indoor Unit ~ Indoor Unit Max. m (ft) 15 (49.2) 15 (49.2)
BD Unit ~ Indoor Unit Max. m (ft) 10 (32.8) 10 (32.8)

Operation Range
(Outdoor Temperature)

Cooling Min. ~ Max. ℃ DB(℉ DB) -20(-4)** ~ 48(118) -20(-4)** ~ 48(118)
Heating Min. ~ Max. ℃ DB(℉ DB) -25(-13) ~ 24(75) -25(-13) ~ 24(75)

- 3 -

Copyright ©2017 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

2. List of Functions & Accessory

Note :

O : Applied, × : Not applied

2.2 List of Accessory

2.1 List of Functions

Note :

O : Applied, × : Not applied
Accessory model name : Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate package.

Category Functions

A5UW36GFH0[LMU360HHV]
A6UW42GFH0[LMU420HHV]

Reliability

Defrost/Deicing

O

High pressure switch

X

Low pressure switch

X

Phase protection

X

Restart delay (3-minutes)

O

Self diagnosis

O

Soft start

O

Test function

X

Convenience

Night Silent Operation

O

Wiring Error Check

O

Peak Control

O

Mode Lock

O

Forced Cooling Operation (Outdoor Unit)

O

Network function Network soluation(LGAP)

O

Device

A5UW36GFH0[LMU360HHV]
A6UW42GFH0[LMU420HHV]

Central Controller

AC Ez (Simple Controller) PQCSZ250S0

AC Ez Touch PACEZA000

AC Smart IV PACS4B000

ACP IV PACP4B000

AC Manager IV PACM4B000

PI485 PMNFP14A0/PMNFP14A1

BNU (Building Network Unit)

LONWORKS Gateway PLNWKB000

BACnet Gateway PQNFB17C0

Installation

Y branch PMBL5620

Header branch X

Air Guide X

PDI (power distribution indicator) PQNUD1S00

ODU Dry Contact X

Low Ambient Kit O (Logical operation)