Mitsubishi Electric VL-250CZPVU-L-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.
HANDBOOK
MODELS
VL-250CZPVU-L-E
VL-250CZPVU-R-E
VL-350CZPVU-L-E
VL-350CZPVU-R-E
Nameplate
March 2021 No. U295-A
Filter (Optional)
P-250F-E P-350F-E
P-250SF-E P-350SF-E
P-250MF-E P-350MF-E
P-250PF-E P-350PF-E
P-250NF-E P-350NF-E
RC cover (Optional)
P-RCC-E
* The figure shows VL-350CZPVU-R-E.
LOSSNAY HEAT RECOVERY VENTILATOR

Contents
─ 2 ─
Contents
1. Safety precautions .......................................................................... 3
2. Names and functions of components.............................................. 4
3. Specifications.................................................................................. 6
4. Outside dimensions ........................................................................ 8
5. Electrical wiring diagrams ............................................................. 13
6. Circuit board diagrams.................................................................. 14
7. Principles of operation .................................................................. 17
8. Troubleshooting ............................................................................ 23
9. Service inspection list ................................................................... 44
10. Overhauling procedures.............................................................. 45
10-1 VL-250CZPVU-L type, VL-250CZPVU-R type......................................46
10-2 VL-350CZPVU-L type, VL-350CZPVU-R type......................................65
11. Parts catalog ............................................................................... 81
VL-250CZPVU-L-E .......................................................................................82
VL-250CZPVU-R-E.......................................................................................88
VL-350CZPVU-L-E .......................................................................................94
VL-350CZPVU-R-E.....................................................................................100
3
4-5
6-7
8-12
13
14-16
17-22
23-43
44
45-80
46-64
65-80
81-105
82-87
88-93
94-99
100-105

─ 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 improperly are described with the warning
symbols shown below.
Warning
Modification is prohibited
Do not modify the unit.
( Failure to observe 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 observe 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.)
Improper handling of the product may
result in serious injury or death.
Caution
Improper handling of the product may result in injury or
damage to properties including buildings and equipment.
Proper electric work
Qualified electricians shall conduct electric work in
accordance with your local electric work regulations
and the installation manuals.
( 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 observe 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 parts
catalog of the applicable model and use the proper
tools.
( Failure to observe 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 observe 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 observe this caution may
result in a fall.)
Notes for servicing
● Inspect the earth condition, and repair it if it is incomplete. Make sure that a power supply isolator and an over-
load protection device are installed. If they are not installed, recommend the customer to install them.
Be sure to follow
this instruction.
Wear gloves
Wear gloves when servicing.
(Failure to observe 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
- For L-type (For example, VL-350CZPVU-L-E),
filters, controller and name plate are on the
reflected positions.
* The figure shows VL-350CZPVU-R-E.
18
2
9
310
511
6
7
No. Name Function
1 Exhaust air filter It prevents heat exchanger from clogging.
2 Exhaust air filter case It holds the exhaust air filter
3 Optional air filter case For optional filter (See the table below.)
4 Filter cover -
5 Drain pipe attachment It is connected to drain pipe.
6 Control box It holds circuit board
7 Name plate It shows product name and serial No.
8 Outdoor air filter It removes insects, pollen, dirt, dust, and other particles from the outdoor air that is
taken into the room.
9 Outdoor air filter case It holds the outdoor air filter.
10 Heat exchanger
(Lossnay core) It exchanges heat between the supply air and the return air.
11 Controller Product operation
* The controller can be installed externally. (Use the optional component P-RCC-E for external installation)
Optional filter
Filter name MODEL Applicable model Location to use Main
material
Replacement
intervals
Replacement filter P-250F-E VL-250CZPVU-L-E/VL-250CZPVU-R-E RA, OA
L Type
R Type
RA: Return Air
OA: Outdoor Air
SA: Supply Air
PET,
acrylic fiber Three years
P-350F-E VL-350CZPVU-L-E/VL-350CZPVU-R-E
Standard filter P-250SF-E VL-250CZPVU-L-E/VL-250CZPVU-R-E
RA, OA, SA
Polypropylene,
polyester
One year
P-350SF-E VL-350CZPVU-L-E/VL-350CZPVU-R-E
Medium efficiency
filter
P-250MF-E VL-250CZPVU-L-E/VL-250CZPVU-R-E
RA, OA, SA One year
P-350MF-E VL-350CZPVU-L-E/VL-350CZPVU-R-E
PM2.5 filter
P-250PF-E VL-250CZPVU-L-E/VL-250CZPVU-R-E
RA, OA, SA
For SA
installation:
One year
For OA
and RA
installations:
Six months
P-350PF-E VL-350CZPVU-L-E/VL-350CZPVU-R-E
NOx filter P-250NF-E VL-250CZPVU-L-E/VL-250CZPVU-R-E SA Pulp Six months
P-350NF-E VL-350CZPVU-L-E/VL-350CZPVU-R-E
* When a NOx filter and an optional dust catch filter (P-250/350SF-E, P-250/350MF-E, P-250/350PF-E) are used together, be
sure to install a NOx filter on the SA side and a dust catch filter on the OA side.
* Install any of the filters other than NOx filter on the OA and RA side to protect the product.
4
OA
SA
RA
RA
SA
OA

─ 5 ─
Installation example
Notes
- Make sure that the exhaust air connection has two or more confluence points with the piping from the
bathroom.
- Pre-heaters and electric dampers may be required in your region.
- Read the instructions carefully in advance when using optional components and commercially available
components.
EA
SA
RA
OA
Pre-heater
(Field supply)
OA shutter
(Field supply)
Externally-installed controller
(Use P-RCC-E for installation)
Router
(Field supply)
By-pass switch
(Field supply)
Living room
Rest room
Humidity sensor
(Field supply)
Ventilation fan
interlocking lighting
switch (Field supply)
Isolator
(Field supply)
CO2sensor
(Field supply)
Wi-Fi interface
(Use MAC-567IF-E)
Outdoor
Tablets
(Field supply)

─ 6 ─
3. Specifications
Model VL-250CZPVU-L-E, VL-250CZPVU-R-E
Heat exchange system Heat recovery ventilating system
Heat exchanger material Sensible heat exchanger
Cladding Steel sheet
Heat insulation material Polyethylene foam
Motor DC motor
Blower 180 mm diameter centrifugal fan
Filter Non-woven fabrics filter
Duct connecting Synthetic resin
Duct connecting cover Styrene foam
Outside air condition Shall be higher than -15°C
Return (Suction) air
condition Shall be lower than 40°C, 95%RH
Surrounding air condition Indoor temperature and humidity should not exceed the dew point temperature 12°C
(e.g. RH 60%, 20°C)
Supply fan operation under
low outdoor temperature
-3°C to -15°C: Intermittent operation
-15°C or less: Supply air fan stopped.
*Exhaust air fan:
continuous operation
Function Heat exchange ventilation/ By-pass ventilation, Fan speed 1,2,3,4
The air flow increment by 1% from 25% to 100%
Dimensions
(Height x Width x Depth) 565 mm x 595 mm x 356 mm
Weight 26 kg
Electrical power supply 220–240 V 50 Hz/ 220 V 60 Hz
Insulation resistance 10 MΩ or more
Dielectric strength 1000 V AC 1 minute
Maximum current [A] 1.32
Specifications
Ventilation mode Heat exchange mode
Fan speed Fan Speed 4 (100%) Fan Speed 3 (70%) Fan Speed 2 (50%) Fan Speed 1 (30%)
Running current [A] 0.76 0.35 0.20 0.12
Input power [W] 106 44 23 11
Air volume [m3/h] 250 175 125 75
[L/s] 69 49 35 21
External static
pressure [Pa] 150 74 38 14
Temperature
exchange efficiency
[%] 85 87 88 90
Sound pressure
level at 3 m [dB] 31 22 16 15 >
Attention
1. The above values are at factory default.
2. The running current, the input power, the efficiency and the noise are based on the rating air volume, and 230 V
50 Hz.
3. The sound pressure level at 3 m is spherical.
4. Temperature exchange efficiency (%) is based on winter conditions.
5. Mitsubishi Electric measures figures in the chart according to EN13141-7:2010, and the characteristic curves are
measured by chamber method.

─ 7 ─
Model VL-350CZPVU-L-E, VL-350CZPVU-R-E
Heat exchange system Heat recovery ventilating system
Heat exchanger material Sensible heat exchanger
Cladding Steel sheet
Heat insulation material Polyethylene foam
Motor DC motor
Blower 210 mm diameter centrifugal fan
Filter Non-woven fabrics filter
Duct connecting Synthetic resin
Duct connecting cover Styrene foam
Outside air condition Shall be higher than -15°C
Return (Suction) air
condition Shall be lower than 40°C, 95%RH
Surrounding air condition Indoor temperature and humidity should not exceed the dew point temperature 12°C
(e.g. RH 60%, 20°C)
Supply fan operation under
low outdoor temperature
-3°C to -15°C: Intermittent operation
-15°C or less: Supply air fan stopped.
*Exhaust air fan:
continuous operation
Function Heat exchange ventilation/ By-pass ventilation, Fan speed 1,2,3,4
The air flow increment by 1% from 25% to 100%
Dimensions
(Height x Width x Depth) 623 mm x 658 mm x 432 mm
Weight 32 kg
Electrical power supply 220–240 V 50 Hz/ 220 V 60 Hz
Insulation resistance 10 MΩ or more
Dielectric strength 1000 V AC 1 minute
Maximum current [A] 1.32
Specifications
Ventilation mode Heat exchange mode
Fan speed Fan Speed 4 (100%) Fan Speed 3 (70%) Fan Speed 2 (50%) Fan Speed 1 (30%)
Running current [A] 1.08 0.52 0.31 0.18
Input power [W] 155 71 37 19
Air volume [m3/h] 320 224 160 96
[L/s] 89 62 44 27
External static
pressure [Pa] 150 74 38 14
Temperature
exchange efficiency
[%] 85 87 88 90
Sound pressure
level at 3 m [dB] 35 26 19 15 >
Attention
1. The above values are at factory default.
2. The running current, the input power, the efficiency and the noise are based on the rating air volume, and 230 V
50 Hz.
3. The sound pressure level at 3 m is spherical.
4. Temperature exchange efficiency (%) is based on winter conditions.
5. Mitsubishi Electric measures figures in the chart according to EN13141-7:2010, and the characteristic curves are
measured by chamber method.

─ 8 ─
4. Outside dimensions
VL-250CZPVU-L-E
202202
2088181
φ 122
51
56514
242
119
595
32
219224
280
309
126
83
10 356 20
40
40
30179179179
681
228423
178387
Drain pipe (EA)
φ22 Drain pipe (SA)
φ22
Power supply cord Control box
Pipe guide (EA)
Pipe guide (OA)
Pipe guide (SA)
Pipe guide (RA)
Filter cover (OA)
Filter cover (RA)
Filter cover (SA)
Wall mount hook top
Controller
Heat exchanger
Wall mount hook down
Wall bracket
(accessory)
Wall mount hook center
Cable strap hole
RA: Return Air
SA: Supply Air
EA: Exhaust Air
OA: Outdoor Air
150
300
298
125
500
46
600
Control box
Space to pull out the control box
Working space (Required space around the Lossnay unit)
Unit (mm)

─ 9 ─
VL-250CZPVU-R-E
202202
88
181
32
595
φ122
224219
86
318
269
115
10 356 20
40
40
30179179179
20
242
51
56514
118
228423
178387
681
Drain pipe (EA)
φ22
Drain pipe (SA)
φ22
Power supply cord Control box
Pipe guide (SA)
Pipe guide (RA)
Pipe guide (EA)
Pipe guide (OA)
Filter cover (RA)
Filter cover (OA)
Filter cover (SA)
Wall mount hook top
Controller
Heat exchanger
Wall mount hook down
Wall bracket
(accessory)
Wall mount hook center
Cable strap hole
RA: Return Air
SA: Supply Air
EA: Exhaust Air
OA: Outdoor Air
300
150
500
298
600
60
125
Control box
Space to pull out the control box
Working space (Required space around the Lossnay unit)
Unit (mm)

─ 10 ─
VL-350CZPVU-L-E
20
192 222
20
222 192
209 112
31
8462315
242
658
242 242
350
377
149
106
10 432
200 200 200
40
40
30
φ 145
103
246460
195428
736
Drain pipe (EA)
φ22 Drain pipe (SA)
φ22
Power supply cord
Control box
Pipe guide (EA)
Pipe guide (OA)
Pipe guide (SA)
Pipe guide (RA)
Filter cover (OA)
Filter cover (RA)
Filter cover (SA)
Wall mount hook top
Controller
Heat exchanger
Wall mount hook down
Wall bracket
(accessory)
Cable strap hole
Wall mount hook center
RA: Return Air
SA: Supply Air
EA: Exhaust Air
OA: Outdoor Air
678
580
150
125
298
300
46
1010
Control box
Space to pull out the control box
Working space (Required space around the Lossnay unit)
Unit (mm)

─ 11 ─
VL-350CZPVU-R-E
658
623 84
31
95
322
372
121
111209
200200200
192 222
222 192
15
30
10 20
242242
40
40
242
φ 145
20
432
102
736
246460
195428
Drain pipe (EA)
φ22
Drain pipe (SA)
φ22
Power supply cord Control box
Pipe guide (SA)
Pipe guide (RA)
Pipe guide (EA)
Pipe guide (OA)
Filter cover (RA)
Filter cover (OA)
Filter cover (SA)
Wall mount hook top
Controller
Heat exchanger
Wall mount hook down
Wall bracket
(accessory)
Wall mount hook center
Cable strap hole
RA: Return Air
SA: Supply Air
EA: Exhaust Air
OA: Outdoor Air
300
150
580
60
678
298
125
1010
Control box
Space to pull out the control box
Working space (Required space around the Lossnay unit)
Unit (mm)

─ 12 ─
P-RCC-E
■
■
Unit (mm)
P-250F-E, P-250SF-E, P-250MF-E, P-250PF-E, P-250NF-E, P-350F-E, P-350SF-E, P-350MF-E, P-350PF-E, P-350NF-E
A
B
15
MODEL A B
P-250F-E 302 178
P-250SF-E
P-250MF-E
P-250PF-E
P-250NF-E
306 177
P-350F-E 377 178
P-350SF-E
P-350MF-E
P-350PF-E
P-350NF-E
382 177
Unit (mm)

─ 13 ─
5. Electrical wiring diagrams
VL-250CZPVU-L-E, VL-250CZPVU-R-E, VL-350CZPVU-L-E, VL-350CZPVU-R-E
VL-40P
VL-40S
Wiring example
VL-40P
Pre-heater
12 V or 24 V DC
(0-10 V DC)
24 V DC
By-pass
POWER SUPPLY
220-240 V 50 Hz
220 V 60 Hz
Can be removed from the main unit.
POWER SUPPLY
220-240 V 50 Hz
220 V 60 Hz
15 V DC 0.1 A
By-pass
Definition of symbols
M1 Motor for exhaust fan CN18, CN19, CN118, CN119 Connector
M2 Motor for supply fan CN130, CN131, CN132, CN232 Connector
GM Motor for By-pass damper CN217, CN26, CN32 Connector
TH1 Thermistor for outside air CN22 Connector (Thermistor OA)
TH2 Thermistor for return air CN5 Connector (Thermistor RA)
TM2 Terminal block (External control input) CN7 Connector (Motor for By-pass damper)
TM4 Terminal block (Remote controller)
TM3 Terminal block (Monitor output) LED1 to LED4 Inspection indicator lamp
TM200 Terminal block (0-10 V DC) LED6 Power supply indicator lamp
TM201 Terminal block (Volt-free) SA1 Not in use
TAB1, TAB2 Connector (Power supply) SA2 Not in use
TAB3, 4 Connector (Reactor) SW2 Function selection Switch
TAB5 Not in use (or Not equipped) SW5, SW7 Not in use (or Not equipped)
CN9, CN10 Connector (Fan motor) SW6 Model selection switch
CN17 to CN20 Connector
CN105 Connector (IT) SYMBOL Terminal block
Connector on PCB
■ Attention
1. Electrical work must be carried out safely and reliably by a professional electrical contractor (properly qualified electrician) in accordance with
internal wiring provisions and electrical-equipment technical standards.
2. Use 220 to 240 V AC Power.
3. Use the designated electric wires, and connect them securely so that they do not come loose.
4. Be sure to install the ground wire.
5. Install an all-pole power supply isolator at the power supply side as per local electrical regulations. All supply circuits must be disconnected
before obtaining access to the terminal devices. Use the specified cable size and connect the cables securely to prevent disconnection when
they are pulled.

─ 14 ─
6. Circuit board diagrams
Circuit board diagrams and check points
(1) Control circuit board
Signal interface
circuit board
During error status or
when the OA shutter is open: 0 Ω
During normal operation or
when the OA shutter is closed:
∞
Ω
When Lossnay is operating or
when After-heater is operating: 0 Ω
When Lossnay is stopped or
when After-heater is stopped:
∞
Ω
1s digit10s digit
Fed with power: lit
Not fed with power: unlit
Remote controller
power supply indicator
(LED3 Green)
By-pass monitor output
Pre-heater output
(Between [7] and [10] )
During by-pass mode or
when the pre-heater is operating: 0 Ω
During heat exchange mode or
when the pre-heater is stopped:
∞
Ω
Malfunction monitor output
OA shutter output
(Between [8] and [10] )
Operation monitor output
After-heater output
(Between [9] and [10] )
Monitor output
COM
Controller
10 to 13 V DC
External control input
5 V DC (Insulated)
Power for the circuit
Fed with power: lit
Not fed with power: unlit
Not in use Model selection
switch
Function selection
switch
Not in use
(or Not equipped)
Error indicator
(LED1 Green)
Normal: unlit
Error: blinking
During delay operation: lit
LED2
Red
Lit all the time
Power supply indicator
for the circuit
(LED4 Red)
Outdoor air (OA)
thermistor
Return air (RA)
thermistor
Circuit board name Lot number indication
Indication of the
microcomputer
software No.
SA1 SA2 SW6
SW2
SW5
SW7
GND
(Insulated)
Power circuit board
12 to 14 V DC
(Insulated)

─ 15 ─
(2) Power circuit board
GND
(Not insulated)
12 to 14 V DC
(Insulated)
GND
(Insulated)
14 to 16 V DC
(Not insulated) Reactor
Supply fan motor (CN10)
Pin No. of the connector
[1] Power for the motor: 280 to 360 V DC
[2] Not used
[3] GND
[4] Power for motor control: 14 to 16 V DC
[5] Speed command voltage: 0 to 6 V DC
[6] Rotational speed pulse
Exhaust fan motor (CN9)
Pin No. of the connector
[1] Power for the motor: 280 to 360 V DC
[2] Not used
[3] Not used
[4] GND
[5] Power for motor control: 14 to 16 V DC
[6] Speed command voltage: 0 to 6 V DC
[7] Rotational speed pulse
Fed with power: lit
Not fed with power: unlit
Power supply indicator
for motor control
(LED6 Red)
Control circuit
board
Damper motor output
220 to 240 V, 50 Hz
220 V, 60 Hz
Power interface
circuit board
Fuse
10 A, 250 V
Fuse
5 A, 250 V
Lot number
indication
Circuit board
name
Caution:
The power circuit board is not insulated from the power line (high voltage part), except for the connection part
(CN118 and CN119) with the control circuit board. Also, even when the power supply is cut off, the capacitor is
charged. Therefore, wait for at least five minutes before starting work.

─ 16 ─
(3) Power interface circuit board
(4) Signal interface circuit board
Lot number indicationCircuit board name
Power supply input,
Live switch input
220 to 240 V, 50 Hz
220 V, 60 Hz
Power circuit board
Signal interface circuit board
Circuit board name
Control circuit board Lot number indication
Volt-free control inputPower interface circuit board
0-10 V sensor input
Caution:
The power interface circuit board is not insulated from the power line (high voltage part), except for the con-
nection part (CN132) with the signal interface circuit board. Also, even when the power supply is cut off, the
capacitor is charged. Therefore, wait for at least five minutes before starting work.

─ 17 ─
7. Principles of operation
(1) Terminal connection specifications and functions
Terminal Category No. Input/
Output Terminal rating
Selection requirement Wiring
example
Diameter and
length of wires
Sensor, switch,
etc.
TM200
1+Analog input
(for sensor) 1 Input Max.: 10 V DC
Polarity
0.5 mm2–0.75mm2 0-10 V DC Fig. 1
-
2+Analog input
(for sensor) 2 Input
-
TM201
1Volt-free contact
(for By-pass switch) Input No-Polarity
0.5 mm2–0.75mm2
Contact rating:
15 V DC, 0.1 A
Min. applicable
load: 1 mA
Fig. 2
2
3Volt-free contact
(for boost switch)
4
TM2
1
Slim-Lossnay
interlocking Input No-Polarity
0.5 mm2
– 1.5mm2
*See the manual
of the external
device (Slim).
— Fig. 32
3
TM3
7
Volt-free contact signal
for By-pass monitor or
Pre-heater signal
Output
Max.: 24 V DC, 1 A
Min.: 5 V DC, 0.1 A
No-Polarity
0.5 mm2–0.75mm2
Max.: 24 V DC, 1 A
Min.: 5 V DC, 0.1 A
Fig. 4
8
Volt-free contact signal
for Malfunction moni-
tor or Outdoor shutter
signal
9
Volt-free contact signal
for Operation monitor
(Exhaust fan, Supply
fan, or After-heater)
10 Common
TM4 1Remote Controller In/Out No-Polarity 0.3 mm2
Max. 200 m — Fig. 5
2
CN105 IT interconnection
Wi-Fi In/Out — — — Fig. 6

─ 18 ─
Fig. 1
+-+-
1 2
TM200
0-10 V sensor
Fig. 3
Lossnay
Controller
Air conditioner
TM2
Mr. Slim
Controller
Slim-Lossnay con-
nection cable
(included)
Cable
(Field supply)
12 3
Extend the cable for wiring.
CN2
Slim-Lossnay interlocking
cable (Included)
Mr. Slim PCB
Lossnay external
control input TM2
TM2
The unit can be operated by the DC power supply input
from external devices.
Notes
• Misconnection may cause malfunction of external
device.
• Be sure to check the polarity.
• Be sure to connect electric wires correctly.
• Terminal block has a seal attached on No. 2 terminals.
When using No. 2 terminals, remove the seal.
You can control the product by Mr. Slim’s remote controller.
Extend the Slim-Lossnay interlocking cable connected to Mr.
Slim PCB. Connect the cable to TM2 of the product.
When interlocked with Mr. Slim, signals from Mr. Slim oper-
ate/stop Lossnay. (The product stops regardless of the
Enable OFF button setting.)
Notes
• Be sure to check the setting of Mr. Slim in line with the
following.
• At the selection of the remote controller functions of
Mr. Slim, check that the Lossnay connectivity setting
is set to “Not supported”.
• This use method limits the functions is as below.
- Other external input functions cannot be used
together.
- Interlocking commands from Mr. Slim do not operate
the Boost/Purge modes.
Volt-free contact
When the contact is ON (closed), the signal is input, when
the contact is OFF (open), the signal is stopped.
Note
• Since the circuit ensures 1 mA when the switch is
turned on, the maximum number of switches that
can be used for Volt-Free contact input is one when
the minimum load capacity is 1 mA.
Fig. 2
1 2 3 4
TM201
Volt-free control
By-pass Sensor
Switch
Rating: 15 V DC, 0.1 A
Minimum applicable load: 1 mA

─ 19 ─
Fig. 4
<Examples of electric wiring for function setting No. 57 TM3 9–10>
Function setting value [1]: Exhaust air fan
Function setting value [2]: Supply air fan
Function setting value [3]: Supply air after-heater
<Examples of electric wiring for function setting No. 58 TM3 7–10>
Function setting value [1]: By-pass ventilation Function setting value [2]: Supply air pre-heater
<Examples of electric wiring for function setting No. 81 TM3 8–10>
Function setting value [0]: Malfunction monitor Function setting value [1]: Outdoor air shutter
9
8
7
10
Operation
indicator
Power Supply
TM3
X15
9
8
7
10
Relay
2 m or more
Power Supply
for heater Power Supply
for relay
TM3
Lossnay
X15
SA
OA
9
8
7
10
Power
Supply
TM3
X13
By-pass operation
indicator
9
8
7
10
Relay
2 m or more
Power Supply
for Pre-heater
Pre-heater
Power Supply
for relay
TM3
Lossnay
X13
SA
OA
9
8
7
10
Power
Supply
TM3
Malfunction indicator
X14
9
8
7
10
Relay
2 m or more
Power Supply
for OA shutter
OA
shutter
Power Supply
for relay
TM3
Lossnay
X14
SA
OA
Fig. 5
Cable
(Field supply) Optional cable
(P-RCC-E)
Lossnay
TM4
Remote controller
Fig. 6
CN105
Lossnay
Optional cable
(MAC-567IF-E)
Wi-Fi interface
(MAC-567IF-E)
Note
• Remove the controller installed on the product.
Install the controller externally with extension
cables following the manual attached to P-RCC-E.
The product cannot be controlled by multiple
remote controllers.
Note
• Applications are not included.

─ 20 ─
Function
No.
Function name
Function setting value
Factory
default
setting
Function description
[0] [1] [2] [3] [4] [5] [6] [7] [8] [9]
1
1: Filter maintenance
indicator
2: Fan power increase
—
1: Yes
2: No
1: No
2: No
1: Yes
2: Yes
— — — — — — 1
1: Set the filter maintenance indica-
tion to Show/Hide.
2: Set Use/No use of the function
that increases the fan output
every 1/3 of maintenance inter-
val passes described in “6.4.11
Maintenance interval” of the
Installation Manual.
- This function cannot be used
when the fan output is set to the
highest (100%).
2
Lossnay core
maintenance indicator
setting
Not
available
Available ————————0
Lossnay core maintenance icon
display setting
To show the icon
1. Set the function No. 86 to “Show”.
2. Set the display interval on the
“Maintenance interval” screen.
5 Power recovery mode — Stop Run
Auto-
matic
recov-
ery
— — — — — — 3
Set the operation mode when the
power is recovered after a power
failure.
[1] Stop:
Lossnay remains stopped when the
power is recovered.
[2] Run:
Lossnay starts operation when the
power is recovered.
[3] Automatic recovery:
Lossnay returns to the state before
interruption.
9 Delay start setting for
air conditioner starting —
Not
available
Available
/15 min.
Available
/30 min.
— — — — — — 1
This function delays operation of
Lossnay for the specied period
of time while the air-conditioner is
warming up to mitigate outdoor air
load.
13
Exhaust fan setting
during air conditioner
defrosting
— Stop
No
Change
— — — — — — — 1
Operation status setting of the
exhaust fan when the air-conditioner
(Mr. Slim) starts defrosting operation
while it is interlocked with Lossnay.
36 Outdoor temperature
indication Hide Show — — — — — — — — 0
Set to Show/Hide the temperature
detected by the built-in thermistors.
Set the settings of “6.4.2.4 Display
details” of the Installation Manual also.
No. 36:
LO is displayed when lower than 2°C
and HI is displayed when 36°C or
higher.
No. 37:
LO is displayed when lower than 9°C
and HI is displayed when 37°C or
higher.
No. 38:
This is the same as No. 37.
Note
If both function settings No. 38 and
84 are [1], only the function setting
No. 84: CO2concentration is dis-
played on the Main display screen.
(Since the same display position
is allocated, the priority is given to
the indication of function setting
No. 84: CO2concentration.)
37 Indoor temperature
indication Hide Show — — — — — — — — 0
38
Supply air (calculated
value) temperature
indication
Hide Show — — — — — — — — 0
39
Correction of
temperature exchange
e󰀩ciency (tens digit)
Function setting value: 0 to 9
Temperature exchange e󰀩ciency (tens digit): 0 to 9 8
Set the value of temperature
exchange efficiency used for the
calculated value of No. 38 Supply air
temperature indication.
Factory default setting: 85%
40
Correction of
temperature exchange
e󰀩ciency (ones digit)
Function setting value: 0 to 9
Temperature exchange e󰀩ciency (ones digit): 0 to 9 5
(2) Function setting list