Mitsubishi Electric LGF-100GX-E User manual

Warning:
Repair work must be performed by the manufacturer, its service
agent or a similarly qualified person in order to avoid hazards.
LOSSNAY
HANDBOOK
MODELS
LGF-100GX-E
April 2019 No. U174-C
Remote controller (Optional)
PZ-60DR-E
Filter
PZ-100GF-E (Pre-filter)
PZ-100GFM-E (High efficiency filter)
Nameplate

Contents
1. Safety precautions
....................................................................... 3
2. Specifications .............................................................................. 4
3. Outside dimensions
.................................................................. 5-6
4. Electrical wiring diagram ............................................................. 7
5. Basic circuit diagram ................................................................... 8
6. Fundamentals of operation ..................................................... 9-31
7. Troubleshooting
.................................................................... 32-52
8. Overhaul procedure............................................................... 53-55
9. Parts catalog ........................................................................ 56-64
LGF-100GX-E................................................................. 57-64

─3 ─
Electric shock
If you must inspect the circuitry while the power is
on, do not touch the live parts.
(Failure to heed this warning may result
in electric shock.)
Modification is prohibited
Do not modify the unit.
(Failure to heed this warning may result in elec-
tric shock, fire and/or bodily injury.)
Proper electric work
Use the electric wires designated for electric work,
and conduct electric work in accordance with the
"Electric Installation Engineering Standard", the
"Indoor Wiring Regulations", and the Installation
Work Guide.
(Incomplete connection or wiringin-
stallation may result in electric shock
and/or fire.)
Turn off the power supply
Be sure to shut off the earth leakage breaker be-
fore disassembling the unit for repair.
(Failure to heed this warning may
result in electric shock.)
1. Safety precautions
Be sure to read the following precautions thoroughly before the maintenance, and then inspect and repair the
product in a safe manner.
The types and levels of danger that may arise if the product is handled incorrectly are described with the warning
symbols shown below.
Be sure to follow
this instruction.
Caution against
electric shock
Prohibited
Be sure to follow
this instruction.
Use proper parts and tools
For repair, be sure to use the parts listed in the
service parts list of the applicable model and use
the proper tools.
(Failure to heed this warning may
result in electric shock, fire and/or
bodily injury.)Be sure to follow
this instruction.
Replace damaged and/or degraded parts
Be sure to replace the power-supply cord and
lead wire in the event that they are damaged and/
or degraded.
(Failure to heed this warning may
result in electric shock and/or fire.)Be sure to follow
this instruction.
Check insulation
Be sure to measure the insulation resistance
once the repair work is complete, and turn on the
power supply after verifying that an insulation re-
sistance of at least 10MΩis obtained.
(If an insulation problem exists, it
may result in electric shock.)Be sure to follow
this instruction.
Caution for bodily injury
Do not work at a location where you
do not have a sure footing.
(Failure to heed this caution may
result in a fall.)
Wear gloves
Wear gloves when servicing.
(Failure to heed this caution may re-
sult in injury to your hands from sharp
metal or other edges.)
Make sure that the product operates properly upon completion of repair. Clean the product and the surrounding
area, and then notify the customer of the completion of repair.
Request for repair
Inspect the grounding, and repair it if it is incomplete. Make sure that an earth leakage breaker or an overload
protection device is installed. If it is not installed, recommend the dealer to install one.
Caution Incorrect handling of the product may result in serious injury or
damage to properties including buildings and equipment.
Be sure to follow
this instruction.
Prohibited
Warning Incorrect handling of the product may
result in serious injury or death.

─4 ─
2. Specifications

─5 ─
3. Outside dimensions
LGF-100GX-E
Unit (mm)

─6 ─
PZ-60DR-E
Unit (mm)
PZ-100GF-E PZ-100GFM-E
Unit (mm)Unit (mm)

─7 ─
4. Electrical wiring diagram
LGF-100GX-E
EstablishConnectiontoTM1,TM2,TM3,TM4,andTB5shownindottedlines
atworksite.
Donotconnectaninverterforpowersupply.

─8 ─
5. Basic circuit diagram
Circuit board diagram and check points
* Fan drive output voltage: Each 220 to 240 V AC
During
operation: 0Ω
When
stopped: Ω
(TM4 9,10)
5 V DC
(C6) GND
(C5)
(TAB3)
LED 4 (Red)
•Energized: Lit
•Not
energized: OFF
(TAB1, TAB2)
12 V DC
(C4,C5)
15 V DC
(C3,C8)
LED 1 (Green)
•Normal
: unlit
•During
an error: blinking
(TAB5)
EA fan drive
(CN9)
Extra
High High Low
Transformer
secondary
(CN2)
(output)
11 to 20 V AC
Lossnay remote controller
(PZ-60DR-E, PZ-41SLB-E)
and transmission cable
between Lossnay units
(TM4 , )
10 to 15V DC
Transformer
primary (input)
(CN1)
220 to 240 V AC
Fuse
(5 A/250 V)
For damper
motor drive
(CN7)
220 to
240 V AC
During an
error : 0Ω
Normal: Ω
(TM3 7,8)
When SW5-6 is OFF
During bypass
ventilation: 0Ω
During Lossnay
ventilation: Ω
When SW5-6 is ON
During operation
and when the outdoor air
temperature is -5°C to
15°C: 0Ω
While the unit is stopped,
or when the outdoor air
temperature is 15°C: Ω
(TM3 6,7)
Thermistor
(RA) (OA)
(CN5)
LED 2 (Red)
When it is blinking, an
M-NET communication
error is occured.
(The number of
blinks indicates the
details of the error)
It will be lit steadily
when there is no
(registered) connection
to another M-NET
device.
M-NET transmission
cable (Shielded)
(TB5 S)
For external
device connections
(TM2)
M-NET transmission cable
(PZ-52SF-E, M-NET
controller, power supply
unit, and City Multi
indoor unit)
(TB5 A,B)
Damper motor
position detection
(CN6)
During Lossnay
ventilation: 12 V DC
During Bypass
ventilation: 0 V
SA fan drive
(CN10)
Extra
High High Low
Common for EA
fan drive
Common for SA
fan drive
Power supply
230 V AC

─9 ─
Basic System
Basic
System
Lossnay
M-NET
Remote
controller
Mr. Slim
indoor unit
A,K
Mr. Slim
Lossnay
interlocked
signal
Mr. Slim-Lossnay
connection cable
(Included parts with
Lossnay)
A-control or
K-control remote
controller
• Lossnay can be started/
stopped by an A-control
remote controller or a
K-control remote controller.
• Lossnay High or Low fan
speed can be selected from
the A-control remote controller.
• Lossnay stand-alone opera-
tion is permitted from the
A-control remote controller.
* Neither PZ-60DR-E nor
PZ-41SLB-E can be used.
Level sig-
nal output
device
(other
manu-
facturer's
PAC etc.)
or pulse
signal out-
put device
(building
control
system
etc.)
Systems
inter-
locked
with
external
devices
(air
condi-
tioning
units)
6. Fundamentals of operation
Description of the circuit operation
(1)System Configuration
Lossnay operates through the following system.
System
Classification Details
1 Lossnay
unit
1 Remote
controller
Two
remote
control-
lers sys-
tem
1 Lossnay
unit
2 Remote
controllers
Multiple
units
system
Multiple
Lossnay
units
System Diagram
Remote controller : PZ-60DR-E or PZ-41SLB-E
Transmission cable terminal
blocks between Lossnay unit
M-NET : M-NET transmission cable
terminal block
R : Remote controller
(
PZ-60DR-E or PZ-41SLB-E)
• One remote controller oper-
ates one Lossnay unit.
• Two remote controllers oper-
ate one Lossnay unit. (Last
touch priority operation)
* PZ-60DR-E and PZ-41SLB-E
cannot be used together.
Lossnay
remote
controller
(PZ-60DR-E or
PZ-41SLB-E)
Lossnay
remote
controller
(PZ-60DR-E or
PZ-41SLB-E)
• A maximum of 15 Lossnay
units can be operated by
a single remote controller.
(Group operation)
• All units will operate in the
same mode.
Lossnay
remote
controller
(PZ-60DR-E or
PZ-41SLB-E)
Features Required
Parts
R
Lossnay
M-NET Remote
controller Transmission cable
between the remote
controller and Lossnay
RR
Lossnay
M-NET Remote
controller
R
Lossnay
M-NET
Remote
controller
Lossnay
M-NET
Remote
controller
Lossnay
M-NET
Remote
controller
Remote controller (PZ-60DR-E or PZ-41SLB-E)
• Lossnay is started/stopped
by a signal (*1)from an
external device.
• Having a remote control per-
mits last touch priority opera-
tion with the external device
and the remote controller.
• A maximum of 15 Lossnay
units can be operated.
*1: An uncharged a-contact,
12 V DC or 24 V DC level
signal, or an uncharged
a-contact, 12 V DC or 24 V
DC pulse signal.
R
Lossnay
M-NET
Remote
controller
Level (pulse) signal
Output device
External device
(Other manufacturer's
PAC etc.)
Remote controller (PZ-60DR-E or PZ-41SLB-E)
(Operation without a remote controller is also
possible.)
Mr. Slim
(A-control
or
K-control
remote
control-
ler)

─10 ─
M- NET Control
R1
Lossnay
M-NET
Remote
controller
M-NET
transmission
cable
City Multi
Indoor unit
MA
Transmission
cable between
the remote
controller and
Lossnay
Lossnay remote controller
(PZ-60DR-E)
(Operation without a remote
controller is also possible.)
R2
M-NET
transmission
cable
Indoor unit
MA
Remote controller for M-NET
(PZ-52SF-E)
(Operation without a remote
controller is also possible.)
City Multi
indoor unit
Lossnay
M-NET
Remote
controller
System
Classification Details
Systems
inter-
locked
with
external
devices
(air
condi-
tioning
units)
Mitsubishi
City Multi
air condi-
tioner
(MA
remote
control-
ler or ME
remote
control-
ler)
Central
control
sys-
tem for
Lossnay
only
Central/
independ-
ent control
of multiple
Lossnay
units
System Diagram
Remote controller : Terminal block for trans-
mission cable between
PZ-60DR-E and Lossnay unit
M-NET : M-NET transmission cable
terminal block
R1 : PZ-60DR-E
R2 : PZ-52SF-E
When using PZ-60DR-E
* Refer to the technical documentation for details about M-NET system design.
When using PZ-52SF-E
When using PZ-60DR-E
• Can be interlocked with a
maximum of 16 air condition-
ing units.
• Lossnay can be started/
stopped, and switched
between High and Low fan
speed by an air conditioner
remote controller.
• Lossnay stand-alone opera-
tion is permitted from an air
conditioner remote control-
ler.
• Having PZ-60DR-E or
PZ-52SF-E, last touch priori-
ty operation is permitted with
the air conditioner remote
controller and the Lossnay
remote controller.
*1: PZ-41SLB-E cannot be
used in this system.
*2:
PZ-60DR-E and PZ-52SF-E
cannot be used together.
• Lossnay batch/independent
(group)control permitted by
system controller.
• Operation of Lossnay within
a group is permitted by a
Lossnay remote controller.
(PZ-60DR-E or PZ-52SF-E)
• One group of a maximum
of 16 Lossnay units can be
operated.
• Number of Lossnay control
units
Centralized controller
(AG-150A): 50 units/50
groups
O N/OFF remote controller
(PAC-YT40ANRA):
50 units/16 groups
System remote controller
(PAC-SF44SRA):
50 units/50 groups
*1: The remote controller
(PZ-41SLB-E)cannot be
used in this system.
*2: PZ-60DR-E and PZ-52SF-E
cannot be used together.
• Lossnay
remote
controller
(PZ-60DR-E
or
PZ-52SF-E)
• Centralized
controllers
(G-50A),
(PAC-
SF44SRA),
(PAC-
YT40ANRA),
and
(AG-150A)
• Power sup-
ply units
(PAC-
SC50KUA),
(PAC-
SF46EPA),
and (PAC-
SC51KUA)
Features Required
Parts
Lossnay
SC Power supply
R1 R1
R1 R1
Remote controller (PZ-60DR-E)
System controller Power supply unit
Group 1 Group 2
Group 3 Group 4
LossnayLossnay Lossnay
Lossnay Lossnay Lossnay Lossnay
When using PZ-52SF-E
SC
R2
Remote controller for M-NET
(PZ-52SF-E)
Group 1 Group 2
Group 3 Group 4
R2
R2
R2
Power supply
Lossnay
Lossnay Lossnay Lossnay
Lossnay Lossnay Lossnay
Lossnay
M-NET controller Power supply unit