Mitsubishi Electric Lossnay VL-100U5-E User manual

Repair work must be performed by
the manufacturer, its service agent or
a similarly qualified person in order to
avoid hazards.
Nameplate
July 2013 No. U190
Model : VL-100U5-E
VL-100EU5-E
LOSSNAY
HANDBOOK

Contents
1. Safety precautions ....................................................................... 3
2. Names and functions of components .......................................... 4
3. Specifications
.............................................................................. 4
4. Outside dimensions
..................................................................... 5
5. Electrical wiring diagrams ............................................................ 6
6. Troubleshooting
........................................................................ 7-8
7. How to call ................................................................................... 9
8. Service inspection list .................................................................. 9
9. Overhauling procedures ....................................................... 10-15
10. Parts catalog
........................................................................ 16-24
VL-100U5-E .................................................................... 17-20
VL-100EU5-E ................................................................. 21-24

─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 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 unplug the power cord, or shut off the
circuit breaker 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. Names and functions of components
Filter frame
Lossnay Core
(Heat exchanger)
Core handle
Louver Filter stopper Front panel
Shutter knob
Power plug
(VL-100U5-E only)
Pull cord
(VL-100U5-E only)
Exhaust air filter
Outside air filter
(Replacement filter)
3. Specifications
The testing methods are based on Japanese Industrial Standard B 8628.
Model
Power supply
Notch
Power con-
sumption
(W)
Air volume
(m3/h)
Temperature
exchange
efficiency (%)
Sound level
(dB)
Weight
(kg)
Frequency
(Hz)
Voltage
(V)
VL-100U5-E
VL-100EU5-E
50
220 Hi 30 100 73 36.5
7.5
Lo 13 55 80 24
230 Hi 31 105 73 37
Lo 15 60 80 25
240 Hi 34 106 72 38
Lo 17 61 79 27
60 220 Hi 34 103 73 38
Lo 17 57 80 25
About the filters
Features
Exhaust air filter Exhaust air
side The filter prevents clogging of the internal parts.
Outside air filter
(Replacement filter)
(P-100F5-E:
Optional parts)
Supply air
side
When Lossnay takes in outside air to a room, the filter
collects dust, sand, pollen or the likes from outside air.
Note: Some fine particles or tiny insects may pass
through the filter. The high performance filter is
recommended for higher collecting effect.
Outside air filter can be replaced with the following high performance filter.
High performance
filter
(Optional parts)
(P-100HF5-E)
Supply air
side
The filter collects dust more efficiently than the outside
air filter.
Note: When using the high performance filter, install it
in the filter frame without using the filter stopper.

─5 ─
4. Outside dimensions
VL-100U5-E
Unit (mm)
VL-100EU5-E
Unit (mm)

─6 ─
5. Electrical wiring diagrams
VL-100U5-E
VL-100EU5-E

─7 ─
6. Troubleshooting
Work precautions
• When servicing, be sure to recreate the malfunction two or three times before starting repairs.
• When servicing, always keep proper footing.
• When servicing, always unplug the power cord from the outlet, or turn off the circuit breaker. Sufficient care
must be taken to avoid electric shock or injury.
• Always connect the power wires properly.
(1) Service Flowchart
After checking the check items below, follow the troubleshooting 1 and 2 for servicing.
Check items
1Condition of trouble
2Frequency of trouble:
The date of starting operation
and occurrence of trouble
3With or without working drawings:
Equipment, wiring
Troubleshooting 1
Lossnay does not operate, or it stops by itself.
Check the initialization checklist from installation to
operation ((2) Table 1).
Troubleshooting 2 Lossnay operates irregularly.
Check the Lossnay checklist ((2) Table 2) and Basic
checklist for the major components ((2) Table 3).
Troubleshooting 1 Lossnay does not operate, or it stops by itself.
(2) Checklist
1Initialization checklist from installation to operation (Table 1)
No. Error Checkpoint
1 The Lossnay operation is
disabled or improper.
Lossnay stops irregularly.
Check the main power connection.
<For VL-100U5-E>
• Is the power plug connected to the power supply of rated voltage?
<For VL-100EU5-E>
• Is the rated voltage supplied to the terminal block?
• Is there a poor connection?
Troubleshooting 2 Lossnay operates irregularly.
2Lossnay checklist (Table 2)
No. Error Cause Action
1 The shutter
does not open.
The shutter
does not close.
Is there any foreign matter or obstruction
around the shutter?
Remove it.
2 The fan does
not rotate.
Do the fan blades touch other parts? Check for an abnormal area.
Replace the parts of the abnormal area.
Is there any foreign matter around the fan? Remove it.
Is there something wrong with the motor? Check the basic checklist for the major
components (Table 3).
3 An unusual
noise comes
from the fan.
Is there any foreign matter around the fan? Check around the fan.
Can you rotate the fan manually? No: Replace the motor.
Is there an odd feeling when rotating the
fan?
Yes: Replace the motor.

─8 ─
No. Error Cause Action
3 An unusual
noise comes
from the fan.
Is there something wrong with the motor? Check the basic checklist for the major
components (Table 3).
Replace the abnormal parts.
4 High/Low lamp
does not illumi-
nate.
Is Lossnay operating at the High or Low
fan speed?
If the lamp does not illuminate during the
High or Low fan speed operation, replace
the neon lamp.
3Basic checklist for the major components (Table 3)
*Make sure to unplug the power cord or turn off the circuit breaker, before performing the procedures No. 2 to 4.
No. Parts Judging instructions
1Check that the fan rotate while the rated voltage is supplied.
2 Fuse Check if the fuse is blown out.
If the fuse is blown out, replace the fuse.
3 Switch with a pull
cord
(VL-100U5-E only)
Remove the switch from the main unit. Measure the resistance at the weld for the
wire connection on the backside of the switch.
If the resistance differs from the value listed below, replace the switch.
Color of wires Notch Resistance
White - Red High Approx. 0.1 Ω(conducted)
White - Blue Low
4 Motor <For VL-100U5-E>
Measure the resistance between the pins of the power plug.
<For VL-100EU5-E>
Measure the resistance between C and Hi (High), and between C and Lo (Low) ter-
minals of the terminal block.
• If the resistance differs from the value listed below, replace the motor and capaci-
tors.
• If the resistance is approximately equal to the value listed below, replace the
capacitors.
Notch Resistance
High Approx. 490 Ω
Low Approx. 0.1 Ω
OFF
(VL-100U5-E only) Open

─9 ─
7. How to call
Symptom Remedy
The incoming air feels cold. 1Stop the operation, and close the shutter.
2Adjust the louver in a horizontal position.
3Change the fan speed to Low.
Unusual noise occurs.
(Noise became louder.)
1Clean the filters.
2Securely attach the front panel and filters.
Small insects intrude into the unit. 1Place the filter (outside air filter) properly inside the filter frame.
2Replace the filter (outside air filter) with the high performance filter
(optional parts).
8. Service inspection list
Location Inspection Item Check Result
Electric
wiring
Are the power lead wires securely connected to the terminal block?
(VL-100EU5-E)
Is the wiring correct? (VL-100EU5-E)
Appliance
Is the main unit securely mounted?
Does Lossnay operate as described in the Operating Instructions when oper-
ating the switch?
Is the fan operating?
Does the shutter work?
Does Lossnay operate without abnormal vibration or noise?

─10 ─
(2) Power lead wires to the terminal block
Front panel
Power cord plug Circuit breaker
(1)Turning power off
1Stop the operation by the switch.
2Unplug the power cord from the outlet, or turn off the circuit
breaker.
For VL-100EU5-E
2Unhook the claw of the cover, and remove the cover.
Cover
1Open the front panel.
9. Overhauling procedures
Work precautions
• Before replacing parts, follow the instructions described in the troubleshooting.
• When servicing, always keep proper footing.
• When servicing, always unplug the power cord from the outlet, or turn off the circuit breaker. Sufficient care
must be taken to avoid electric shock or injury.
• Always connect the power wires properly.
• After completing repairs, verify that the product operates properly.
• Always wear gloves when servicing.

─11 ─
3Unscrew the terminal block (TB) case cover clamping screw (one PT screw 4 × 8, indicated by ), and
remove the TB case cover.
TB case cover
4Loosen the screws of the terminal block (three screws, indicated
by ) with a screwdriver, and disconnect the power lead wires.
(3) Main unit
1Unscrew the main unit clamping screws (two black PTT screws
4 × 8, indicated by ).
2Slightly lift the main unit, and then take it down.
Power cord
Main unit
(4) Front panel
• Open the front panel all the way (approx. 90 degrees), and pull it up to unhook the claws (indicated by ).
Precaution
Pay attention not to damage the front surface of the removed panel.
Front panel
*The illustration shows VL-100U5-E.

─12 ─
(5) Lossnay core
• Hold the core handle, and pull it out in the direction of the arrow while holding down the hook part.
Hook part
Core handle
<Reassembly procedure>
• When installing the Lossnay core, first fit the lower part of the core handle (indicated by “a”) into "b" position
of the front casing, and then hook the ledge of the core handle to the concave portion of the front casing
(indicated by ).
<Installed state>
(6) Front casing
1Unscrew the screws (six PTT screws 4 × 14, indicated by ).
2Unscrew the lamp cover clamping screw (one PTT screw 4 × 14,
indicated by ), and remove the lamp cover.
a
b
Ledge
Front casing
Core handle
Reassembly precaution
Check that both edges of the Lossnay core (indicated by )
are securely fitted.
Lamp cover

─13 ─
3Remove the neon lamp from the front casing.
4Pass the neon lamp through the hole of the front casing, and then remove the front casing.
Neon lamp
(7) Air exhaust (EA) fan
1Remove the special nut (8) and tab washer, and then remove
the EA fan.
Special nut (8)
2Remove the special (spl) washer (40 mm in outer diameter).
Spl washer
Reassembly precaution
Be aware of the size difference between each washer for EA
fan and SA fan.
Incorrect installation may cause unusual noise.
EA fan
Hole of the front casing
Tab washer

─14 ─
4Remove the special (spl) washer (8) (16 mm in outer diameter).
Spl washer (8)
Reassembly precaution
Be aware of the size difference between each washer for EA
fan and SA fan.
Incorrect installation may cause unusual noise.
(9) Motor
• Unscrew the screws that clamps motor and lead cover (six PTT
screws 4 × 10, indicated by ), and then remove the motor.
Reassembly precaution
When installing the lead cover, make sure to place it under the
motor (indicated by ).
2Turn the motor fix plate upside down, and put it on the main unit.
3Remove the special nut (8) and tab washer, and then remove
the SA fan.
(8) Air supply (SA) fan
1Unscrew the motor fix plate clamping screw (one PTT screw 4 ×
14, indicated by ).
SA fan
Lead cover
Motor fix plate
Motor
Special nut (8) Tab washer

─15 ─
(10) Terminal block case (TB case)
1Unscrew the TB case clamping screw (one PT screw 4 × 8, indi-
cated by ), and remove the TB case.
TB case
2Unscrew the TB fix plate clamping screws (two PTT screws 4 × 8,
indicated by ), and remove the TB fix plate.
TB fix plate
(11) Fan casing
• Remove the fan casing (made of styrene foam).
Fan casing Casing assembly
When reassembling
Reassemble the unit in the reverse order of disassembly.
After reassembly, always make a test run to make sure that the unit
operates properly.

─16 ─
10. Parts catalog
Please note the following when using the parts catalog.
1. When ordering parts, always indicate the part number, part name, and the number of
parts required.
2. Parts are not always available, and it may take time for you to receive them.
3. There may be specification improvements.
4. Parts marked are critical for safety. To maintain safety and performance, always
replace these parts with the parts prescribed.
Abbreviation Description
PC screw Cross recess flat head machine screw
PRC screw Cross recess oval head machine screw
PP screw Cross recess pan head machine screw
SW · PP screw Cross recess pan head screw with spring washer
PPT screw Cross recess tapping screw
PCT screw Cross recess flat head tapping screw
PTT screw Cross recess truss head tapping screw
PT screw Cross recess truss head machine screw
SET screw Slotted head stop screw
SQ · SET screw Square head stop screw
P · SET screw Pan head stop screw
PMT screw Primer truss head screw
HS · SET screw Hexagon head stop screw
P · R · W screw Cross recess round wood screw
P · C · W screw Cross recess flat head wood screw
P · R · C · W screw Cross recess round and flat wood screw
R · W screw Slotted round wood screw
PW · PP screw Cross recess pan head screw with small washer
SW-PW · PP screw Cross recess pan head machine screw with spring washer and flat washer
Description of screw abbreviations
Screw 4×
16
Screw diameter Length

─17 ─
VL-100U5-E
30
29
28 20
35
22 22
23 24
25
26
26
32
27
34
11
13
15
15
16
14
17
12
21
1
23
4
5
6
6
7
8
9
10
19
18
33
31
12
12
20
18 19
VL-100U5-E

VL-100U5-E
1 Front panel Y36 004 721 1
2 Lossnay core Y36 004 723 1
3 Core handle Y36 004 722 1
4 Cover Y36 004 709 1
5 Front casing Y36 004 707 1
6 PTT screw 4×14 H00 000 333 8
7 PTT screw 4×10 M32 013 027 1
8 Filter Y36 004 717 1
9 Lamp cover Y36 004 711 1
10 Neon lamp Y36 004 290 1
11 TB case cover Y36 004 710 1
12 PT screw 4×8 H00 000 349 3
13 TB case Y36 004 708 1
14 Cord band K83 170 228 1 White
15 Crimp cap K82 181 240 6 CE1(CE-100V)
16 Cord clamper M35 855 223 1
17 Cord clamper M35 830 223 1
18 PT screw 4×8 BS H00 011 008 3
19 Spg. washer (4) H00 056 075 3
20 PTT screw 4×8 H00 000 487 6
21 Cord clip X31 981 223 1
22 Cord clip D40 094 227 2
23 Fuse Y36 004 280 1 1A･250V
24 PPT screw 3×10 H00 000 676 1
25 Fuse holder Y55 001 281 1
26 Cord bush M45 649 226 2
27 TB fix plate Y36 004 712 1
28 PPT screw 4×10 H00 000 471 1
29 Switch Y36 004 255 1 With a pull cord
30 Insulator sheet M34 279 201 1
31 Capacitor case M35 768 653 1
32 Capacitor M34 203 283 1 4.0μF･220VAC
33 Capacitor cover M35 275 652 1
34 Capacitor Y81 016 284 1 1.5μF･440VAC
35 Power cord Y36 004 220 1 3200㎜
─18─
RemarksNo. Q'ty
pcs/unit
Critical
for
safety
Name of part Parts No.

─19 ─
41
41
42
42
43
46
47 48
49
50
51
53
65
66
67
69
54 55 56
57 58
59 63
64
55
54
68
44
45
52
70
62
61
46
47
48
49
50
66
20
20
60
60
44
18
19
Air exhaust fan assembly
Air supply fan assembly
2 pcs.
Optional parts
P-100F5-E
P-100HF5-E
shows accessory parts.
VL-100U5-E

VL-100U5-E
41 Wall pipe M36 091 731 2
42 Pipe fix plate M36 293 707 2
43 Fix plate M36 100 709 1
44 Spl scr 3.5×32 M34 863 045 9
45 PTT screw 4×8 M45 502 095 2 Black
46 Weather cover M36 099 707 2
47 Flange M36 099 708 2
48 Flange nut M34 231 303 2
49 Packing M34 519 718 2
50 PTT screw 4×12 D41 037 008 4 SUS
51 Filter stopper Y36 004 714 1
52 Pipe Y36 004 706 2
53 Filter frame Y36 004 713 1
54 Special nut (8) X31 267 067 2
55 Tab washer M36 130 077 2
56 Centrifugal fan M36 265 480 1 φ170
57 Spl washer M36 265 080 1 φ40 (outer dia.)
58 Motor Y36 004 453 1
59 Spl washer (8) M34 365 080 1 φ16 (outer dia.)
60 PTT screw 4×10 H00 000 332 6
61 Cord clamper R50 062 223 1
62 Lead cover M36 169 712 1
63 Motor fix plate Y36 004 715 1
64 Centrifugal fan Y36 004 480 1 φ170
65 Fan casing Y36 004 724 1
66 Mounting piece M34 709 345 2
67 Shutter Y36 004 719 1
68 Shutter Y36 004 720 1
69 Casing Y36 004 716 1
70 Casing assembly Y36 004 725 1 With shutters
─20─
No. Name of part Parts No. Q'ty
pcs/unit
Critical
for
safety
Remarks