Mitsubishi LMAP-02E Installation Manual

Building Air-Conditioners Control System

Model : LMAP02-E

Contents

Safety precautions ……………………………………1,2

1

.Parts Inclue ……………………………………………3

2

.Specifications …………………………………………3

2

-1 External View……………………………………3

2

-2 Enviroment Specifications ……………………3

2

-3 Connected Air Conditioning Equipment ……4

2

-4 LONWORKS®Network Specifications …………4

2

-5 Variables of LM-AP network …………………5

3.Installation ……………………………………………6
3

-1 Locally Procured Parts …………………………6

3

-2 Securing the Unit ………………………………7

3

-3 Connection Methods……………………………8

3

-4 Electrical Wiring…………………………………9

4

.Sysyem Settings ……………………………………10

4

-1 If not used together with MELANS …………10

4

-2 If used together with MELANS ………………11

4

-3

Initialization Settings of LONWORKS®Network

…12

5

.Confirming Operation ………………………………13

5

-1 Pre-operation preparations and settings ……13

5

-2 Test-operation procedure ……………………13

6

.Troubleshooting ……………………………………14

6

-1 Abstract…………………………………………14

6

-2 Troubleshooting ………………………………15

6

-3 Error Code list …………………………………15

Before using the unit, please read this Installation
Manual carefully to ensure correct operation. Store this
Installation Manual in a location that is easy to find.
Echelon®,LON®,LONWORKS®,Neuron®,3150®and the
Echelon logo are trademarks of Echelon Corporation
registered in the United States and other countries.
LonMaker™ and the Lon Users logo are trademarks of
Echelon Corporation.

Installation Manual

AIR CONDITIONER INTERFACE

1

Safety Precautions

• Before instralling this unit,make sure you read all the “Safety Precautions”.

• This manual describes the installation of LM-AP and wiring to the outdoor unit.

• Please look at the installation manual of an air-conditioning unit about the installation method of an air-conditioning unit.

• The “Safety Precautions” provide very important points regarding safety. Make sure you follow them.

Symbols and Terms

Statements identify condition or practices that could result in personal injury or loss of life.
Statements identify condition or practices that could result in damage to the unit or other
property.

Symbols used in the illustrations

: Indicates a part which must be grounded.
: Indicates that the main switch must be turned off before servicing.

(This symbol is displayed on the main unit label.) <Color: Blue>
: Beware of electric shock.(This symbol is displayed on the main unit label) <Color: Yellow>
: Please pay attention to electric shock fully because this is not Safety Extra Low-Voltage (SELV)

circuit.

And at servicing,please shut down the power supply for LM-AP.

WARNING

WARNING
CAUTION

Ask your dealer or technical representative to install.

Any deficiency cased by your own installation may result in an
electric shock and fire.

Ensure that installation work is done correctly following
that installation manual.

Any deficiency caused by installation may result in an electric
shock or fire.

Install in a plase which is strong enough to withstand the
weight of the unit

Any lack of the strength may cause the unit to fall down,
resulting in a personal injury.
Any deficiency caused by installation may result in an electric
shock, fire or incorrect operation.

All electrical work must be performed by a licenced
technician, according to local regulations and the
instructions given in this manual.

Any lack of electric circuit or any deficiency caused by
installation may result in an electric shock or fire.

Wire and connect using the desired cables securely so
that any external force from the cable is imparted to the
terminal connections.

Imperfect connection and fixed may result in heading or fire.

Securely install the cover (panel) of the LM-AP.

If the cover (panel) is not installed properly, dust or water may
enter the unit and fire or electric shock may result.

Never modify or repair the unit by yourself.

Any deficiency caused by your modification or repair may
result in an electric shock or fire. Consult with your distributor
for repair.

Do not move and re-install the unit yourself.

Any deficiency caused by installation may result in an electric
shock or fire. Ask your distributor or special vender for moving
and installation.

Make sure that the unit is powered by dedicated line.

Other appearance connected to the same line could cause an
overload.

Make sure that there is a main power switch.

A ready accessible breaker for power source line helps
reduce the risk of electric shocks.Installation of a breaker is
mandatory in same areas.

If it is assumed that moisture advances into the unit,
such as the time of rainy weather, do not do check or
work of an electric circuit.

It may become the cause of damage of a fire and the unit by
an electric shock or corrosion.

• After reading this installation manual, keep it in a place where the final user can see it anytime he or she wants to it.
When someone moves, repairs or uses the LM-AP, make sure that this manual is forwarded to the final user.

2

CAUTION

Do not install the unit where combustible gas may leak.

If the gas leaks and accumulates around the unit, an
explosion may result.

Do not use in any special environment.

Using in any place exposed to oil(including machine oil),
steam and sulfuric gas may deteriorate the performances
significantly or given damage to the component parts.

When installing the unit in a hospital, communication
station, or similar place, provide sufficient protection
against noise.

The inverter equipment, private power generator, high­frequency medical equipment, or radio communication
equipment may cause the air conditioner to operate
erroneously, or fail to operate. On the other hand, the air
conditioner may affect such equipment by creating noise that
disturbs medical treatment or image broadcasting.

Do not wash with water.

Doing so may cause an electric shock or a malfunction.

Do not install in any steamy place such as bath room or
kitchen.

Avoid any place where moisture is condensed into dew.
Doing so may cause an electric shock or a malfunction.

Do not touch any PCB(Printed Circuit Board) with your
hand or tools. Do not have dust collected on the PCB.

Doing so may cause an electric shock or fire.

Do not install in any place where acidic or alkaline
solution or special spray are other be used.

Doing so may cause an electric shock or a malfuction.

Do not install in any place at a temperature of more then
43 ˚C or less than -15˚C.

It may become the cause of modification and failure.

Safety dispose of the packing materials.

Tear apart and throw away plastic packaging bags so that
children will not play with them. If children play with a plastic
bag which was not torn apart, they face the risk of suffocation.

Be sure to shut off the power source of the unit and all
the other unit to connected to the unit before wiring.

Doing so may cause an electric shock or a malfunction.

Use only an earth leakage breaker and fuse of the
specified capacity.

If no earth leakage breaker is installed, it may cause an
electric shock.
Using fuse and wire or copper wire with too large capacity
may cause a malfunction of unit or fire.

A power-supply line and a transmission line do not band
together, or are not contained in the same metal pipe.

Doing so may cause a malfunction of unit.

This appliance must be earthed.

Make sure to install a protective earth(PE) line. Do not
connect the protective earth line to gas or water pipes,
lightning conductors or telephone grounding lines. Improper
grounding may cause an electric shock.

Wire so that it dose not received any tension.

Tension may caused wire breakage, heating or fire.

Use standard wires in compliance with the current
capacity.

A failure to this may result in an electric leakage, heating or
fire.

Never connect the power source to the transmission line.

Doing so may caused a malfunction or a failture.

Do not touch the switches with wet fingers.

Touching a switch with wet fingers can cause electric shock.

3

1. Parts Include

2. Specifications

Verify that the following parts are appended to the product.

2-2 Environment Specifications

2-1 External View

Name

Shape

Quantity

Main Unit

Binding band

1

3

Installation manual

1

· The external interface file (XIF) is necessary for the product.
Upon verifying the 16-digit program ID (PID) which is bonded on the board, please contact your dealer.

7.5

R

ø10

4.5

9.6

59.6

Detail of A

340

325

60240

360A

TB1

Power supply terminal

( ~ 200 - 240V)

2-ø4.5 hole

TB2

M-NET transmission terminal

TB21

LONWORKS® transmission terminal

10

Item

Power Source
Current Consumption

Dimensions
Net Weight

Operation
Environment

Installation Environment

Description

~ 220 - 240V (50/60 Hz)

50 mA (Maximum)

340 (H) x 360 (W) x 59.6 (D) mm

3.3 kg

Temperature

Operating Range
Storage Range

Humidity

In the control box

30 to 95 RH (No condensation)

-15 to 43˚C

-20 to 60˚C

4

2-3 Connected Air Conditioning Equipment

2-4 L

ONWORKS

®

Network Specifications

* The proper communication is not obtainable when communication intervals exceed its performance,

assure sufficeint intervals.
* ACK Service is recommended for the network service.
* Detailed specifications for the LONWORKS®network can be found in “ FTT-10A Free Topology Transceiver

User's Guide ” by Echelon Corporation.

Item Description

Connected Equipment

Number of Units LM-AP can control 50 indoor units (including LOSSNAY)

Item Description

TMPN3150 (10MHz)

Neuron CHIP

FTT-10A (Free Topology 78kbps)

Network Transceiver

Performance

2.5 inputs/second

Average communication capacity

50 inputs/second (for one second)

Peak communication capacity

MITSUBISHI ELECTRIC Multiple split type air conditioners CITY MULTI

Split-type air conditioners Mr.SLIM
Heat recovery ventilators LOSSNAY

(* For details of the connected models, please contact the dealer.)

5

2-5 Variables of LM-AP network

The following are applied to the CITY-MULTI type indoor unit of the Multiple split type air conditioners CITY MULTI.
If Mr.SLIM or LOSSNAY is used, refer to the technical guide for the details of the network variables.

Request Local
Prohibit SetPoint

Request Local
Prohibit mode

Request Local

(note3,4)

(note3,4)

(note3,4)

(note3)

(note3)

(note3)

Prohibit On/Off

Local Prohibit
mode state

Local Prohibit
SetPoint state

Local Prohibit
On/Off state

Request On/Off

Request Mode

Setpoint from network
(Both cool and heat)

Request Fanspeed

nviOnOff_n

nv1n

nviMode_n

nv3n

nviSetPoint_n

nv5n

nviFanSpeed_n

nv7n

nviProOnOff_n

nv19n

nviProMode_n

nv21n

nviProSetPoint_n

nv23n

nvoOnOff_n

nv2n

nvoMode_n

nv4n

nvoSetPoint_n

nv6n

nvoFanSpeed_n

nv8n

nvoThermo_n

nv10n

nvoSpaceTemp_n

nv12n

nvoAlarm_n

nv16n

nvoProOnOff_n

nv20n

nviProMode_n

nv22n

nviProSetPoint_n

nv24n

Alarm state

Temperature state

of indoor

Thermo On/Off state

FanSpeed state

Setpoint state
(both cool and heat)

Mode state

On/Off run state

(note1) The case of CITY MULTI is indicated.
(note2) There is a case which cannot be used with the system configuration of the air conditioners units.
(note3) “n” of the network variable shows indoor unit address (M-NET).
(note4) It is possible to use when the “MA” remote controler.

Network Variables

Fanction

Local Prohibit SetPoint state

Local Prohibit On/Off state
Local Prohibit mode state

Alarm state

Temperature state of indoor

Thermo On/Off state

FanSpeed state

Setpoint state(both cool and heat)

Mode state

On/Off run state

Request All Off

Request Local Prohibit SetPoint

Request Local Prohibit mode

Request Local Prohibit On/Off

Request Fanspeed

Setpoint from network(Both cool and heat)

Request Mode

Request On/Off

Operation

Monitor

Item

6

3. Installation

<Notes>

Prepare the following prior to installing the unit.

Read and understand the contents of Chapter 1 “Safety Precautions ” before performing the installation.

3-1 Locally Procured Parts

Contents

Power wire
and ground wire

M-NET
transmission wire

Screw To install the main body, prepare four M4 screws which are suitable for the installation area.

Use a breaker with a contact distance of 3mm or more.

Switch

Locally procured parts

Use the sheathed vinyl cord or wire.
Wire type

………

Waie is not lighter than light poly vinyl
<hloride sheathed flexible cord according to IEC 227
(designation H03 VV-F or H03 VVH2-F)>
Wire size

………

0.75mm

2

to 1.25mm

Use the sheathed vinyl cord or wire.
Wire type

………

CREVS, CVVS or equivalent"
Wire size

………

Solid wire : ø1.2mm to ø1.6mm

Twist type : 1.25mm

2

to 2mm

2

Use the wire which is recommended by Echelon Corporation.
For details, refer to “FTT-10A Free Topology Transceiver User's Guide”.
For reference, Cable Types and Txpical Parameters.

L

ONWORKS

®

Network

transmission wire

Cable type

Switch

Capacity Fuse

3A 3A

Breaker for wiring

Breaker for Current Leakage

3A

3A 30mA

0.1 sec or less

Wire

dia /AWG

Rloop

Ω/km

C

nF/km

Vprop
% of C

Belden 85102, single twisted pair,
standed 19/29, unshielded, 150˚C

Belden 8471, single twisted pair,
standed 19/29, unshielded, 60˚C

Level IV 22AWG, twisted pair,
typically solid & unshielded

JY(St) Y 2X2X0.8, 4-wire herical twist,
solid, shielded

TIA568A category 5 24AWG, twisted pair

If a shielded cable is used, the shield should be connected to earth ground via a single 470kΩ,
1/4 Ωatt, ≤10%, metal film resistor to prevent static charge build-up.

28

28

106

73

168

56

72

49

98

46

62

55

67

41

58

1.3mm/16

1.3mm/16

0.65mm/22

0.8mm/20.4

0.51mm/24

7

3-2 Securing the Unit

• When installing the product, assure a space enough to install and remove the cover of the main body.

• Use M4 screws as shown in Fig. below to fix the product.
To prevent the product from dropping, make sure to fix four places.

CAUTION

• This unit does not have a water-resistant design. Always install the unit indoors or
inside a control panel.

• Install in an area capable of withstanding a 3.3 kg load.

20 20

2020

Installation space

8

3-3 Connection Methods

Use wire clamps provided to secure the wires and prevent external force from being conveyed by the wire to
the wire connections.
* External force could cause deformation or damage to the terminal blocks.

Use a small screwdriver to connect diameter 0.2 to 2.5 mm2(AWG24 to 12) cable for
terminal block (TB21) on the unit. Tightening torque is 0.5 to 0.6 Nm. Up to two wires can
be connected to one terminal block.

For LONWORKS®transmission wire

SAUPB

S

R

P.B .

L.B.

4

LON TB21

31

CN405

CN65

CN45

CN32

CN21

CN71

CN31

CN33

CNS3

CN605

CNL12

CN702

TB21

2

Connect LONWORKS®signal wire
to “1”, “2” or “3”, “4” of signal wire
terminal block (TB21).

• TB21-“1” and “3” as well as “2”
and “4” of TB21 are connected
inside the circuit board.

Connect the power supply
wires and ground wire to
“L”, “N” and ground of
terminal block (TB1).

Connect M-NET signal wire to “A”
and “B” of terminal block (TB2).

• Connect the M-NET
transmission wire to
transmission terminal block
(TB7) of the central control.

Attach the appended binding band to the power wire and transmission wire, and fasten it, positioning the
area at inner side than the wire clamp.
Make sure that the ground wire is longer than the other wires.

Note1

Binding band

Ground wire

Power wire 35mm
M-NET 20mm

For power wire and M-NET transmission wire

Note1

Note1

Note1

8mm

20mm

80mm

Binding band

P.B.

L.B.

TB1

PE

L
N

Breaker 3A

Unit Body

Unit Body

CN31

313

AC250V
2A F

ZNR2

F

1

T2

CN33

DSA1

ZNR1

Unit Body

7

3

1
5

CN71

SWL
(Service
Switch)

(Service

LEDL
LED)

1
3

4

3

2

1

5
6

CN45

T1

CN65

2

1

CN21

3

1

CN32

1
2
3
4

CNL12

CN605

5

4

3

2

1

LED402
(5VM)

LED502
(3150RST)

6

4

3

2

1

M-NET
Power Supply

CN40

(WDT)

LED009

LED201

CN41

(18007RST)

SW71
(Termination Switch)

12

ON

OFF

312

TO M-NET transmission line
(Centralized control line)

CNS3

AB

TB2

13

CN405

CN702

1
2

Unit Body

LONWORKS® transmission line

TB21

S

12

4

SW4

101

OFF

ON

OFF

ON

SW2

SW1

16

SW3

61

ON

OFF

0

1

5

2

3

4

6

7

8

9

0

1

5

2

3

4

6

7

8

9

SWU1

(1st digit)

SWU2

(2nd digit)

LED001

LED002

LED003

LED004

(Wink)

Power supply

220-240V~/N 50/60Hz

9

3-4 Electrical Wiring

Explanation of function switch

SW1-1

ON

OFF

Function switch
of local prohibit

local prohibit effective
local prohibit invalidity

ON

OFF

LOSSNAY is operation
from

LONWORKS

®

LOSSNAY interlocks
with the indoor unit

Switch name Function

OFF

Factory

setting

Operation local prohibit nv inputfrom

LONW

ORKS

®

becomes Effective when switch ON.

Operation local prohibit nv input from

LONW

ORKS

®

becomes invalid when switch OFF.

Note

Before turning
on the power supply

SW1-5 Function switch

of LOSSNAY

OFFPlease turn on the switch when LOSSNAY

is operation from

LONWORKS

®

.
Please turn off the switch when LOSSNAY
interlocks with the indoor units.

Before turning
on the power supply

ON

OFF

Mr.SLIM is operation
from

LONWORKS

®

Mr.SLIM is not operation
from

LONWORKS

®

SW1-6 Function switch

of Mr.SLIM

OFF

Before turning
on the power supply

ON

OFF

ON(test run) is transmitted
to the indoor units

OFF is transmitted to the
indoor units

SW1-9 Indoor units

test run switch

OFF Always

ON

OFF

Connected cancellation
command is transmitted
to the indoor units

None

SW3-2 Initialization

switch of the air
conditioners units

OFF Always

SW1-3

ON

OFF

Indoor temperature
state interval switch

Transmission interval
(1minutes or more)

Transmission interval
(10 minutes or more)

OFF

Before turning
on the power supply

SW1-2

ON

OFF

Used together
with MELANS switch

used together with MELNAS
not used together with MELNAS

OFF

Before turning
on the power supply

Set timingSW

*number of indoor unit should
be connected 30 or less

Please turn on the switch when Mr.SLIM
is operation from

LONWORKS

®

.

Transformer

Switch Function selection

M-NET address switch

Tremination selection switch
(

LONWORKS

®

)

SYMBOL EXPLANATION

Power circuit boardP.B

L.B LM-AP main board

F

SWU1, 2

Service switch (

LONWORKS

®

)SWL

Fuse AC250V 2A F

NAMESYMBOL

SW1, 2, 3

T1.2

SW71

LONWORKS

®

transmission line

Earth terminal

M-NET transmission line

Power source

LED

TB21

Power Supply switch connectorCN40/CN41

TB2

TB1

Maintenance LED
Use LED001 as Wink
(

LONW

ORKS

®

) at SW2-1 ˜ 6 OFF

LED001 ˜ 004

Status LED

LED009/201/502/402

Service LED (LONWORKS® )LEDL

NAMESYMBOL

Terminal
block

10

4. System Settings

<Notes>

This chapter only addresses the system settings of this product.
For the installation work and electrical work, refer to the last chapter “ 3. Installation ”.

Read and understand the contents of Chapter 1 “Safety Precautions ” before performing the installation.

4-1 If not used together with MELANS.

The system setting is different depending on the system configuration connected.
Check the system configuration.

1. When the system controller is not used together.

2. When the system controller is used together.

Note: Function switch setting of LM-AP is different according to the management item of the equipment

connected with LONWORKS®. Carefully set the system.

SW1-2 [OFF]

TB2

CN41

CN41

CN40

E

TB7

TB3

TB7

TB3

OC

OC

SW2-1 [OFF]

SW2-1 [OFF]

M-NET transmission line
(Centralized control line)

as is

Factory setting

247

CN41

OFF
OFF

CN41

M-NET transmission line
(Indoor/outdoortransmission line)

M-NET transmission line
(Indoor/outdoortransmission line)

as is

CN41

M-NET address of LM-AP
LM-AP power switch connector
Combined switch for LM-AP system controller
OC central control (SC) on/off switch
OC power supply connector

SWU2, 1 [201 to 250]
CN41 to CN40 (supplies power)
SW1 - 2 [OFF] (Not used together with MELANS)
SW2 -1 [OFF] (No central control)
CN41 as is (power not supplied)

Iteam

Setting

❇ OC : Outdoor Unit

: Switch Position

LM-AP

Switch the short-circuit connector
from CN41 to CN40.LM-AP

M-NET address 201 to 250 [factory setting 247]
(* Setting of position 100 not required.)

(Note:1)When connecting LOSSNAY, settings must be made in the LM-AP.

1) Do not sequence LOSSNAY to the air conditioner. (Independent LOSSNAY)
Or when operation is to be controlled from

LONWORKS

®

(BMS etc.) connectedto the LOSSNAY remote control.

LOSSNAY selection switch. (SW1-5)[ON]

2) When sequencing LOSSNAY to the air conditioner (sequenced LOSSNAY), and not controlling operation
from an

LONWORKS

®

.

(BMS etc.)
LOSSNAY selection switch. (SW1-5)[OFF]
When sequencing LOSSNAY to the air conditioner, the indoor unit and LOSSNAY sequence must be
registered from the remote control.(Refer to the remote control installation manual for details on registering.)

(Note 2)When changing the system configuration, such as the M-NET address, always carry out the following steps.

Always turn the power OFF before changing the LM-AP settings.

1) Make changes to change the unit system.(Addition of indoor unit, change of M-NET address, change of group, etc.)

2) Turn the LM-AP service switch (SW2-1) [ON].
Change the LM-AP system information delete switch (SW3-2) from [OFF] to [ON].

3) When erasing the system information, the maintenance LED “System Information Erase LED (LED001)” will turn ON.

4) When the system information has been erased, the maintenance LED “System Information Erase LED (LED001)”
will turn OFF, and the maintenance LED “System Information Erase Complete LED (LED002)” will turn ON.

5) Turn the LM-AP service switch (SW2-1) [OFF].
Change the LM-AP system information delete switch (SW3-2) from [ON] to [OFF].
Turn the LM-AP power OFF.

7) To change the LM-AP M-NET address and settings, carry out the changing work.

8) Turn the LM-AP power ON.

(Note 3)Refer to the “System Design and Construction Manual” for the outdoor unit for details on the M-NET wiring length.
(Note 4)Set the M-NET address so that it is not duplicated with other units.

Shielded line ground

ON

OFF

12345678910

123456789

12345678910

10

ON

OFF

ON

OFF

11

4-2 If used together with MELANS.

SW1-2 [ON]

E

SW2-1 [ON]

Shielded wire ground

Centralized controller

(MELANS)

Power supply unit

M-NET transmission line
(Centralized control line)

M-NET address 201 to 250 [factory setting 247]
(* Setting of position 100 not required.)

(Note:1) When connecting LOSSNAY, register the sequence must be registered from the shared MELANS.
(Note 2) When changing the system configuration, such as the M-NET address, MELANS being shared must be

registered or changed.

(Note 3) Refer to the “System Design and Construction Manual” for the outdoor unit for details on the M-NET wiring length.
(Note 4) Set the M-NET address so that it is not duplicated with other units.

ON

OFF

12345678910

ON

OFF

12345678910

ON

OFF

12345678910

Factory setting

247

CN41

OFF
OFF

CN41

M-NET address of LM-AP
LM-AP power switch connector
Combined switch for LM-AP MALANS
OC central control (SC) on/off switch
OC power supply connector

SWU2, 1 [201 to 250]
CN411 as is (power not supplied)
SW1 - 2 [ON]

(Used together with MELANS)
SW2 -1 [ON] (Central control)
CN41 as is (power not supplied)

Item

Setting

SW2-1 [OFF]

as is

❇ OC : Outdoor Unit

: Switch Position

M-NET transmission line
(Indoor/outdoortransmission line)

M-NET transmission line
(Indoor/outdoortransmission line)

LM-AP

TB2

CN41

CN41

TB7

TB3

TB7

TB3

OC

OC

as is

as is

CN41

12

4-3 Initialization Settings of LONWORKS®Network

(1) Termination of L

ONWORKS

®

The product can be set with the termination of LONWORKS®.

(2) System Specifications

• Up to 64 FTT-10/FTT-10A transceivers are allowed per network segment.

• LPT-10 transceivers may be used on network segments with FTT-10/FTT-10A transceivers, but are
subject to additional constraints, particularly on distance.

See the LPT-10 Use's Guide for more information.

• The average temperature of the wire must not exceed +55˚C, although individual segments of wire may
be as hot as +85˚C.

SW71-1

OFF

ON

OFF

ON

SW71-2

OFF
OFF

ON
ON

Termination Resistance Value

– ( Factory setting)

100Ω ± 1%

50Ω ± 1%

Termination Switch (SW71)

Maximum bus length

Belden 85102 2700
Belden 8471 2700

Level IV 22AWG 1400

Units

meters
JY(St)Y 2X2X0.8 900
TIA Category 5 900

Maximum node-to-node distance

Belden 85102 500
Belden 8471 400

Level IV 22AWG 400

Units

meters
JY(St)Y 2X2X0.8 320
TIA Category 5 250

Maximum total wire length

500
500

500
500
450

The free topology transmission specification includes two components which must both be met for proper
system operation. The distance from each transceiver to all other transceiver and to the termination
(including the LPI-10 termination, if used) must not exceed

maximum node-to-node distance

.
If multiple paths exist, e.g., a loop topology, then the longest path should be used for the calculations.
The

maximum total wire length

is the total amount of wire connected per segment.

For details, refer to “ FTT-10A Free Topology Transceiver User's Guide ” of Echelon Corporation.
For reference, the system specifications and Transmission specifications are described.

(3) Transmission Specifications

Doubly-Terminated Bus Topology Specifications

Free Topology Specifications

13

5. Confirming Operation

5-1 Pre-operation preparations and settings

(1) Perform the previous operations described in Chapter 3 “ Installation” , Chapter 4 “ System Settings” .
(2) Perform a test operation of indoor units. If being used together with MELANS, perform the installation and electrical

installation for MELANS.
(3) Turn on the power supply for LM-AP. If being used together with MELANS, perform the initialization settings.
(4) The units will be idle until the LM-AP initialization has been completed (LED002 goes out).

❇ This requires approximately 5 to 10 minutes. (If being used together with MELANS, it will be approximately

3 minutes after the completion of the initialization settings.)
(5) Check whether or not LM-AP service LED (LED003 and LED004) have come on.
(6) Refer to the following chapter “6. Troubleshooting” if the LM-AP connection error (LED003) or unit error (LED004) is ON.

(Note 1) Always refer to the previous chapter “4. System settings” before changing the system configuration,

such as the M-NET address.

❇ After confirming the above details, always refer to the following section “5-2. Trial operation procedures” and

make confirmations with trial operations.

❇ Turn all of the switches in the service switch (SW2) [OFF] to confirm the ON/OFF status of the above service LED

(LED002, LED003 and LED004).

5-2 Test-operation procedure

(1) Test-operation of the indoor unit from LM-AP

1. Turn on SW1-9 of LM-AP.
❇ If there is even one indoor unit that is not running, the LM-AP may not correctly recognize the indoor unit.

Refer to the next chapter “Troubleshooting”.

2. Finally turn OFF SW1-9, and verify that all indoor units are stopped.

(2) Test-operation of the indoor unit from LONWORKS

®

If there is any tool which corresponds to LONWORKS®, verify that it can be operated from LONWORKS®network according
to the following procedure.

1. Set the LM-AP in the config.

If LM-AP has been already bounded to another model (the service LED is not ON), don't apply any new binding.

2. During the test operation, use “ nv1n Reguest On/Off ” to verify that the indoor unit can be operated.

For details of “ nv1n Reguest On/Off ” , refer to the following.

3. Finally put the LM-AP in the unconfig, and end the test operation.
Contact your dealer for details on trial operation from the LONWORKS®network.

nv1n Reguest On/Off

network input SNVT_switch nviOnOff_n ;

This input network variable is used to allow On reguest or Off reguest of the indoor unit to be changed via
the network.
When the ventilator(LOSSNAY) interlocks with the inddor unit, it becomes the same operations the indoor uint.

Valid Range

value field : not used
state field : 0 = Indoor unit or ventilation unit is Off.
state field : 1 = Indoor unit or ventilation unit is On.

: Else = Indoor unit or ventilation unit is Off.

_n

…

Indoor unit address (M-NET)

14

6. Troubleshooting

LED009

Item

ON

Normal state Contents to check

Check for turn-off on the power supply (TB1) of LM-AP,
disconnection on the connectors (CN605, CN65, CN32, CN33, CN31, CN71)
and blown fuse (F).

LED402 ON

Check for turn-off on the power supply (TB1) of LM-AP,
disconnection on the connectors (CN405, CN45, CN21, CN31, CN71)
and blown fuse (F).

Service LED —

It blinks when it is not binding.
At this time, operation is unavailable from the network side from L

ONWORKS

®

.

Binding the equipment which corresponds to L

ONWORKS

®

network.

LED002 OFF

If it is ON when the dip switch SW2 is all OFF, the LM-AP is incompletely initialized.
Wait for 15 minutes after the power supply is turned on (Until the initializing process
is completed).

LED004 OFF

If it is ON when the dip switch SW2 is all off, the indoor unit may be troubled.
Check the connection and setting of all indoor units.

CN40/41 —

If the power supply unit is connected, insert the jumper connector to CN41.
If the power supply unit is not connected, insert the jumper connector to CN40.

SW71 —

L

ONWORKS

®

The switch sets the termination of LONWORKS®

network.

According to the system design of L

ONWORKS

®

network, check whether it is properly

set or not.

M—NET
Address switch
SWU1, SWU2

—

If MELANS is used, check whether M-NET address is overlapped or not.
Initial setting of LM-AP is 247.

Dip switch
SW1, SW2,
SW3

—

Check whether MELANS is present or not (SW1-2), and whether the
independent/combined LOSSNAY (SW1-5) is properly set or not.
Moreover, verify that all other switches are all off.

LED003 OFF

If it is ON when the dip switch SW2 is all off, check the setting of the switches and
so on, and turn on the power supply again.

6-1 Abstract

If LM-AP does not properly operate, first check the following contents.

15

(1)The LM-AP is not completely

initialized.

(2)Setting on M-NET side is not properly

completed.

(3)If MELANS is used together LM-AP is

not registered to MELANS.

Turn off all SW2. After verifying that LED002 is OFF,
test the operation again.

Verify that the test operation of the air conditioner is
properly completed. Verify that M-NET transmission
line is properly connected.

In MELANS, register LM-AP as the sub MELANS.

Error content Cause Checking method and remedy

Even if it is in test­operation with
LM-AP, the air
conditioner does
not run.

(1)The LM-AP is not completely

initialized.

(2)Setting on M-NET side is not properly

completed.

(3)If MELANS is used in combination,

LM-AP is not registered to MELANS.

(4)The independent/combined

LOSSNAY of LM-AP is not set.

Refer to 1-(1).

Refer to 1-(2).

Refer to 1-(3).

Turn on SW1-5 of LM-AP, and reset the power supply.

Even if the
operation is tested
on LM-AP, the
LOSSNAY does
not operate.

(1)The LM-AP is not completely

initialized.

(2)Setting on M-NET side is not properly

completed.

(3)If MELANS is used in combination,

LM-AP is not registered to MELANS.

(4)L

ONWORKS

®

network transmission

line is not properly connected.

(5)The termination of L

ONWORKS

®

network is not properly set.

(6) Binding of L

ONWORKS

®

network is

not properly ended.

Refer to 1-(1).

Refer to 1-(2).

Refer to 1-(3).

Check for disconnection on TB21, short-circuit and
wire breakage on the network wire and so on.

Verify that the termination of LONWORKS® network is
properly set according to the system design.

Apply the binding again.

Even if it is operated
with the remote
controller/MELANS,
it is not informed to
the host on LON
side.

1

No.

2

(1)Much time is necessary until the

initialization is completed. (Normal
state)

In some case, it takes approx. 15 minutes until the
initialization process is ended.Wait until the
initialization is ended.

LM-AP is not
completely
initialized.

4

3

6-2 Troubleshooting

16

(1)The LM-AP is not completely

initialized.

(2)Setting on M-NET side is not properly

completed.

(3)If MELANS is used together LM-AP is

not registered to MELANS.

(4)The independent/combined

LOSSNAY of LM-AP is not set.

(4)L

ONWORKS

®

network transmission

wire is not properly connected.

(5)The termination of L

ONWORKS

®

network is not properly set.

(6) Binding of L

ONWORKS

®

network is

not properly ended.

Refer to 1-(1).

Refer to 1-(2).

Refer to 1-(3).

Refer to 2-(4).

Refer to 4-(4).

Refer to 4-(5).

Refer to 4-(6).

Error content Cause Checking method and remedy

Independent/combi
ned LOSSNAY can
not be operated
from the LON side.

(1)The LM-AP is not completely

initialized.

(2)Setting on M-NET side is not properly

completed.

(3)If MELANS is used together LM-AP is

not registered to MELANS.

(4)L

ONWORKS

®

network transmission

wire is not properly connected.

(5)The termination of L

ONWORKS

®

network is not properly set.

(6) Binding of L

ONWORKS

®

network is

not properly ended.

Refer to 1-(1).

Refer to 1-(2).

Refer to 1-(3).

Refer to 4-(4).

Refer to 4-(5).

Refer to 4-(6).

Air conditioner can
not be operated
from the LON side.

5

6

6600

6601

6607

• If it has been confirmed that
a unit with the same M-NET
address is transmitting.

• When discrimination of the
polarity of the M-NET
transmission wire.

• If there is no response
(ACK) from the recipient
after a transmission.

• If there is two or more units with the
same M-NET address at the unit and
controller.

• Interrupted power supply, Connectors
(CN405, CN45, CN21, CN71).
Damage to transformer (T2).

• Interrupted power supply for M-NET
transmission wire.

• If recipient of transmission is LM-AP.

• Defect in transmission line
(TB2)between LM-AP.

• Interrupted power LM-AP power
supply (TB1).

• Blown fuse (F1) in LM-AP
disconnection on the loose connector
(CN605, CN65, CN32, CN33, CN31).

•

Damage transformer in LM-AP(T1, T2).
Damage circuit board (L.B, P.B).

• Check that there are no
duplicate addresses.
After correcting
problem, reset power
supply.

• Check for defects. Once
corrected, reset the
power supply.

• Check these areas.
After correcting
problem, reset power
supply.

Error
code

Error content Symptom Cause Countermeasure

M-NET duplex
error

M-NET polarity
not set error

No ACK error

17

6-3 Error code list

WT03223X02

This product is designed and intended for use in the residential,

commercial and light-industrial environment.

The product at hand is based on
the following EU regulations:

• Low Voltage Directive 78/23/EEC

• Electromagnetic Compatibility Directive

89/336/EEC

HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO 100-0005 TELEX J24532 CABLE MELCO TOKYO