Mitsubishi Electric LGH-F300RX5-E1 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
LGH-F300RX5-E1
LGH-F470RX5-E1
LGH-F600RX5-E1
LGH-F1200RX5-E1
Name plate
Name plate
March 2019 No. U194-C

Contents
1. Safety precautions
....................................................................... 3
2. Specifications
........................................................................... 4-5
3. Outside dimensions
.................................................................. 6-9
4. Electrical wiring diagrams ..................................................... 10-12
5. Circuit board diagram ................................................................ 13
6. Fundamentals of operation ................................................... 14-36
7. Troubleshooting
.................................................................... 37-55
8. Overhauling procedures ........................................................ 56-58
9. Parts catalog ........................................................................ 59-83
LGH-F300RX5-E1 ........................................................... 60-65
LGH-F470RX5-E1 ........................................................... 66-71
LGH-F600RX5-E1 ........................................................... 72-77
LGH-F1200RX5-E1 ......................................................... 78-83

─3 ─
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.
Warning
Modification is prohibited
Do not modify the unit.
(Failure to heed this warning may result
in electric shock, fire and/or injury.)
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.)
Check insulation
Upon completing repair work, always measure the
insulation resistance. Verify that it is at least 10 MΩ
(with a 500 V DC insulation resistance tester), and
then turn on the power.
(Inadequate insulation may result in
electric shock.)
Incorrect handling of the product may
result in serious injury or death.
Caution Incorrect handling of the product may result in serious injury
or damage to properties including buildings and equipment.
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
instructions.
(Improper connection or wiring installation
may result in electric shock and/or fire.)
Replace damaged and/or degraded parts
Be sure to replace the power cord and lead wires if
they are damaged and/or degraded.
(Failure to heed this warning may result
in electric shock and/or fire.)
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 injury.)
Caution against
electric shock
Prohibited
Be sure to follow
this instruction.
Turn off the power supply
Be sure to shut off the power supply isolator before
disassembling the unit for repair.
(Failure to heed this warning may result
in electric shock.)
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.
Caution for 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.)
Request for repair
●Inspect the grounding, and repair it if it is incomplete. Make sure that a power supply isolator or an overload
protection device is installed, if it is not installed, recommend the dealer to install one.
Be sure to follow
this instruction.
Wear gloves
Wear gloves when servicing.
(Failure to heed this caution may result in
injury to your hands from sharp metal or
other edges.)
1. Safety precautions
Be sure to follow
this instruction.
Be sure to follow
this instruction.
Be sure to follow
this instruction.
Be sure to follow
this instruction.
Prohibited

─4 ─
2. Specifications

─5 ─

─6 ─
3. Outside dimensions
LGH-F300RX5-E1
Unit: Inch (mm)

─7 ─
LGH-F470RX5-E1
Unit: Inch (mm)

─8 ─
LGH-F600RX5-E1
Unit: Inch (mm)

─9 ─
LGH-F1200RX5-E1
Unit: Inch (mm)

─10 ─
4. Electrical wiring diagrams
LGH-F300RX5-E1
(High/Low/Extra-Low/Bypass switch)