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FXMQ50-125P7VEB9
VRV System air conditioners
3P468515-4 – 12.2016

Installation and operation manual

10

Computerised control (forced off and on/off operation)

1

Wire specifications and how to perform wiring

-

Connect input from outside to terminals T1 and T2 of the 
terminal board (remote controller to transmission wiring).

2

Actuation

-

The following table explains "forced off" and "on/off 
operations" in response to input A.

3

How to select forced off and on/off operation

-

Turn the power on and then use the remote controller to 
select operation.

-

Set the remote controller to the field set mode. For details, 
refer to the chapter "How to set in the field", in the remote 
controller manual.

-

When in the field set mode, select mode No. 12, then set the 
first code No. to "1". Then set second code (position) No. to 
"01" for forced off and to "02" for on/off operation. (forced off 
at factory set.) 

(See figure 20)

Centralized control

For centralized control, it is necessary to designate the group No. For
details, refer to the manual of each optional controller for centralized
control.

I

NSTALLATION

 

OF

 

THE

 

DECORATION

 

PANEL

Refer to the installation manual attached to the decoration panel.

After installing the decoration panel, ensure that there is no space
between the unit body and decoration panel.

T

EST

 

OPERATION

Refer to the installation manual of the outdoor unit.

The operation lamp of the remote controller will flash when an error
occurs. Check the error code on the liquid crystal display to identify
the trouble. 

If any of the items in following table are displayed on the remote
controller, there may be a problem with the wiring or power, so check
the wiring again.

M

AINTENANCE

How to clean the air filter

Clean the air filter when the display shows "

" (TIME TO CLEAN

AIR FILTER).

Increase the frequency of cleaning if the unit is installed in a room
where the air is extremely contaminated.

If the dirt becomes impossible to clean, change the air filter. (Air filter
for exchange is optional.)

1

Open the suction grille. (Only for bottom suction.)

Slide both knobs simultaneously as shown and then pull them
downward.

Wire specification

Sheathed vinyl cord or cable (2 wire)

Gauge

0.75-1.25 mm

2

Length

Max. 100 m

External terminal

Contact that can ensure the minimum 
applicable load of 15 V DC, 10 mA

Forced off

on/off operation

Input "on" stops 
operation 

input off 

 on: turns on the unit 

(impossible by remote controllers)

Input "off" enables control 

input on 

 off: turns off the unit by 

remote controller

1

Second code No.

2

Mode No.

3

First code No.

4

Field set mode

F2

T1

T2

FORCED
OFF

Input A

Error code

Meaning

A8

Error in power supply to indoor unit

C1

Transmission error between fan driver PCB and controller 
PCB of the indoor unit

C6

Improper combination of fan driver PCB of the indoor unit or 
setting failure in control PCB type

U3

Test operation of the indoor unit has not been finished

Error code

Meaning

There is a short circuit at the forced off terminals (T1, T2)

U4

 or 

UH

- The power on the outdoor unit is off
- The outdoor unit has not been wired for power supply
- Incorrect transmission of forced off wiring

no display

- The power on the indoor unit is off
- The indoor unit has not been wired for power supply
- Incorrect transmission wiring, forced off wiring or remote 

controller wiring

Caution

Only a qualified service person is allowed to perform
maintenance.

Before obtaining access to terminal devices, all power
supply circuits must be interrupted.

Do not use water or air of 50°C or higher for cleaning
air filters and outside panels.

When cleaning the heat exchanger, be sure to remove
the switchbox, fan motor, auxiliary electric heater and
drain pump. Water or detergent may deteriorate the
insulation of electronic components and result in burn-
out of these components.

If the main power supply is turned off during
operation, operation will restart automatically after the
power turns back on again.

Summary of Contents for VRV FXMQ50P7VEB9

Page 1: ...INSTALLATION AND OPERATION MANUAL FXMQ50P7VEB9 FXMQ63P7VEB9 FXMQ80P7VEB9 FXMQ100P7VEB9 FXMQ125P7VEB9 System air conditioners...

Page 2: ...680 1 5 3 4 2 7 180 460 160 160 300 425 1 3 2 180 460 350 1 2 2 3 5 0 75 625 A 300 mm 1 1 5 m 2 3 1 4 100 mm 1 0 625 mm 1 1 2 4 5 3 6a 7a 7b 7c 6b 6c 8 9 10 11 2 1 3 5 4 700 630 A B 4 3 2 1 1 1 2 4 5...

Page 3: ...B C 08 Nota tal como estabelecido em A e com o parecer positivo de B de acordo com o Certi cado C 09 A B C 10 Bem rk som anf rt i A og positivt vurderet af B i henhold til Certi kat C 11 Information e...

Page 4: ...re machines generating electromagnetic waves exist Control system may malfunction Where the air contains high levels of salt such as air near the ocean and where voltage uctuates a lot e g in factorie...

Page 5: ...ical appliances Noise may be generated depending on the conditions under which the electric wave is generated even if 1 meter is kept When installing the wireless remote controller kit the distance be...

Page 6: ...ing surface 2 Ceiling opening 3 Service access panel optional accessory 4 Air lter 5 Air inlet duct 6 Duct service opening 7 Interchangeable plate NOTE Before installation of the unit in case of insta...

Page 7: ...han the speci ed refrigerant such as air etc inside the refrigerant circuit Use annealed material only for are connections Refer to Table 1 for the dimensions of are nut spaces and the appropriate tig...

Page 8: ...he drain raising pipes and insulate them 2 Connect the drain hose to the drain outlet on the indoor unit and tighten it with the clamp Precautions Install the drain raising pipes at a height of less t...

Page 9: ...slation Note that the operation will restart automatically if the main power supply is turned off and then turned back on again This system consists of multiple indoor units Mark each indoor unit as u...

Page 10: ...units less than 12 A Branch the line outside the terminal board of the unit in accordance with electrical equipment standards when using two power wiring of a gauge greater than 2 mm2 1 6 The branch...

Page 11: ...ndications Ultra long life lter Light 10 000 hrs Heavy 5 000 hrs Long life lter 2 500 hrs 1 250 hrs Standard lter 200 hrs 100 hrs 2 Thermostat sensor selection Use both the unit sensor or remotesensor...

Page 12: ...the outdoor unit If any other error display occurs on the display of the remote controller refer to Test operation on page 10 and the operation manual of the outdoor unit Check the defective point Us...

Page 13: ...is extremely contaminated If the dirt becomes impossible to clean change the air lter Air lter for exchange is optional 1 Open the suction grille Only for bottom suction Slide both knobs simultaneousl...

Page 14: ...he air inlet and outlet are not blocked Remove any obstacle Check if the earth is connected Clean the air lter and outside panels After cleaning the air lter make sure to attach it Turn on the main po...

Page 15: ...1M TERMINAL STRIP POWER SUPPLY X2M TERMINAL STRIP CONTROL Y1E ELECTRONIC EXPANSION VALVE Z1C Z2C NOISE FILTER FERRITE CORE Z1F NOISE FILTER CONNECTOR OPTIONAL ACCESSORY X28A CONNECTOR POWER SUPPLY FOR...

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Page 19: ...N IN D OUT D F1 F2 F1 F2 Control box P1 P2 P1 P2 F1 F2 T1 T2 P1 P2 F1 F2 T1 T2 P1 P2 F1 F2 T1 T2 P1 P2 F1 F2 T1 T2 P1 P2 P1 P2 2 5 3 IN D OUT D F1 F2 F1 F2 Control box IN D OUT D F1 F2 F1 F2 Control b...

Page 20: ...3P468515 4 12 2016 Copyright 2016 Daikin...

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