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Air to Air Heat Exchanger with DX Coil Unit

Installation Manual

Air to Air Heat Exchanger with DX Coil Unit

Installation Manual

– 28 –

EN

17

Troubleshooting

Confirmation and check

When an error occurred in the Air to Air Heat
Exchanger with DX Coil Unit, the check code and the
indoor unit No. appear on the display part of the remote
controller.
The check code is only displayed during the operation.
If the display disappears, operate the Air to Air Heat
Exchanger with DX Coil Unit according to the following
“Confirmation of error log” for confirmation.

Confirmation of error log

When an error occurred on the Air to Air Heat
Exchanger with DX Coil Unit, the error log can be
confirmed with the following procedure. (The error log
is stored in memory up to 4 errors.)
The log can be confirmed from both operating status
and stop status.

1

When

and

buttons are pushed

simultaneously for 4 seconds or more, the
following display appears.

If [Service check]

is displayed, the mode

enters in the error log mode.
• [

01

: Order of error log] is displayed in CODE No.

window.

• [Check code] is displayed in CHECK window.
• [Air to Air Heat Exchanger with DX Coil Unit

address in which an error occurred] is displayed
in Unit No.

2

Every pushing of

button used to set

temperature, the error log stored in memory
is displayed in order.

The numbers in CODE No. indicate CODE No.
[

01

] (latest)

→

[

04

] (oldest).

REQUIREMENT

Do not push

button because all the error log of the

Air to Air Heat Exchanger with DX Coil Unit will be
deleted.

3

After confirmation, push

button to return

to the usual display.

Check code

Unit No. of the Air to Air Heat Exchanger

with DX Coil Unit with a problem

3

2

1

How to check

To display an error code or to confirm the operation status, the remote controller (wired remote controller and
central remote controller) is equipped with an LCD display, and the interface circuit board of the outdoor unit is
equipped with a 7 segment display. A self-diagnosis function is activated to find out the details of a problem with
the unit.

Error code list

The table below shows the error codes. See the table for details of error codes.
• To confirm the code from the remote controller, see “Wired remote controller display” in the table.
• To confirm the code from the outdoor unit, see “7 segment display on the outdoor unit” in the table.

Wired

remote

controller

display

Check code

Check code name

Judging

device

7 segment display on the

outdoor unit

Auxiliary code

E01

—

—

Indoor unit - remote controller communication error (Detected by

remote controller)

Remote

controller

E02

—

—

Remote control transmission error

Remote

controller

E03

—

—

Indoor unit - remote controller communication error (Detected by indoor

unit)

Indoor

E04

—

—

Indoor / Outdoor unit communication circuit error (Detected by indoor

unit)

Indoor

E06

E06

Number of indoor units for

normal reception

Number of indoor units decreasing

I/F

—

E07

—

Indoor / Outdoor unit communication circuit error (Detected by outdoor

unit)

I/F

E08

E08

Duplicate indoor addresses Duplicate indoor addresses

Indoor I/F

E09

—

—

Duplicate header remote controllers

Remote

controller

E10

—

—

Indoor MCU communication error

Indoor

E12

E12

01: Indoor / Outdoor unit

communication
02: Communications

between outdoor units

Automatic address start error

I/F

E15

E15

—

No indoor unit during automatic address

I/F

E16

E16

00: Over capacity
01

~: Number of connected

units

Number of connected units / Over capacity

I/F

E18

—

—

Indoor header - follower communication error

Indoor

E19

E19

00: No center unit
02: Multiple center units

Unusual number of center outdoor units

I/F

E20

E20

01: Outdoor connections of

another line
02: Indoor connections of

another line

Connections of another line during automatic address

I/F

E21

E21

02: No header unit
00: Number of duplicate

header units

Unusual number of thermal header units

I/F

E22

E22

—

Number of thermal units decreasing

I/F

E23

E23

—

Transmission error between outdoor units Number of thermal units error

(Reception error)

I/F

E25

E25

—

Duplicate terminal outdoor address settings

I/F

E26

E26

Number of outdoor units for

normal reception

Number of connected outdoor units decreasing

I/F

E28

E28

Detected outdoor unit No.

Terminal outdoor error

I/F

55-EN

56-EN

+00ET99805001-2.book Page 28 Tuesday, July 26, 2011 1:39 PM

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Содержание MMD-VN1002HEXE-TR

Страница 1: ...Heat Exchanger with DX Coil Unit Model name Model with a humidifier MMD VNK502HEXE TR MMD VNK802HEXE TR MMD VNK1002HEXE TR Model without a humidifier MMD VN502HEXE TR MMD VN802HEXE TR MMD VN1002HEXE TR Installation Manual For commercial use Ticari kullanım için 00ET99805001 2 book Page 1 Tuesday July 26 2011 1 39 PM ...

Страница 2: ...iduals who have been trained and is thus thoroughly acquainted with the knowledge related to these operations The qualified installer who is allowed to do the electrical work involved in installation relocation and removal has the qualifications pertaining to this electrical work as stipulated by the local laws and regulations and he or she is a person who has been trained in matters relating to e...

Страница 3: ...or electricians and from heat Failure to wear this protective gear may result in burn Before carrying out the installation maintenance repair or removal work be sure to set the circuit breaker for the Air to Air Heat Exchamger Unit to the OFF position Otherwise electric shocks may result Place a Work in progress sign near the circuit breaker while the installation maintenance repair or removal wor...

Страница 4: ...noid valve or pipes are damaged and water leakage may result Do not install the unit in a place where the outside temperature especially around the unit or the air grill falls below 0 C Otherwise water in the pipes in the humidifying element or in the solenoid valve freezes and a breakdown or water leakage may result If the ducts pass through a fire protection zone use a noncombustible duct and in...

Страница 5: ...gned for R410A and please care so that water or dust does not enter To Disconnect the Appliance from Main Power Supply Means for disconnection having a contact separation in all poles at least 3 mm must be incorporated in the fixed wiring in accordance with the wiring rules The installation fuse All Types Can Be Used must be used for the power supply line of this Air to Air Heat Exchanger with DX ...

Страница 6: ... the water will leak VNK type only Places where air pipes are installed in the ceiling cavity Place exposed to air with high salt content seaside area Place exposed to large quantities of sulfide gas hot spring Should the unit be used in these places special protective measures are needed A restaurant kitchen where a lot of oil is used or place near machines in a factory Oil adhering to the heat e...

Страница 7: ...e using the unit Do not install the unit near a water heater A B C C B Dry bulb temperature C Absolute humidity kg kg S a t u r a t io n C u r v e 5 Installation of indoor unit WARNING Install the air conditioner at enough strong place to withstand the weight of the unit If the strength is not enough the unit may fall down resulting in injury To provide against strong wind or an earthquake install...

Страница 8: ...o the unit using the six screws supplied for each connector Attaching the washers and nuts 1 Procure the hanging bolts nuts and washers locally 2 Attach the washers and nuts to the hanging bolt M12 as shown in the figure on the right Fixing the unit 1 Fit the hanging bracket on the hanging bolt then adjust the position of the unit so that it is level 2 Tighten the bolts securely using a double nut...

Страница 9: ...yl chloride pipe VP25 The figure shows an example of VNK type 7 Water supply piping for a humidifier VNK type only CAUTION Install the water supply pipes after washing the inside of them with water Install a drain valve on the water supply pipe then drain the water until the drained water runs clear Do not to allow cutting fluid or detergent to enter the pipes The water quality of the humidifiers ...

Страница 10: ... hood to a place where rain may fall directly In this case using a rectangle hood is recommended Stuff the cracks in the pipe penetration part with a noncombustible material such as mortar 1 Excessive bending 2 Multi times bending 3 Making the connecting duct smaller 4 Bending near the exhaust air duct Heat insulator Insulates the adapter and the aluminium tape Outside air intake duct air discharg...

Страница 11: ...oor unit should be turned on perform vacuuming from both the liquid side and the gas side Opening the valve fully Open the valves of the designated outdoor unit fully Outer dia of copper pipe A 0 0 4 In case of flaring for R410A with the conventional flare tool pull it out approx 0 5 mm more than that for R22 to adjust to the specified flare size The copper pipe gauge is useful for adjusting proje...

Страница 12: ...anger with DX Coil Unit 1 Power supply Wiring for the power supply Air to Air Heat Exchanger with DX Coil Unit VNK502HEXE TR VN502HEXE TR VNK802HEXE TR VN802HEXE TR VNK1002HEXE TR VN1002HEXE TR I phase 50 Hz 220 240 V Current rating Fuse rating of circuit breaker switch for indoor units should be selected by the accumulated total current values of the indoor units cable 3 core 2 5 mm2 in conformit...

Страница 13: ...cuit board MCC1615 Connector White Connector Black External output 220 240 V under 1 A each 5 External input sold separately No voltage a contact input Voltage DC 12 V 24 V input Operation output White White Red Connector White 6 Yellow Connector Red 6 White Red Red Red Blue Orange Red Blue Orange White Yellow Blue Purple Red 1 Common 2 Remote controller operation 3 Fan speed 5 Operation Pink Powe...

Страница 14: ...t Common External damper output 3 4 Abnormal Bypass mode output 3 5 Cord clamp 40 60 10 10 R L S N Earth wire Wiring for the remote controller Wiring between indoor and outdoor unit Earth Screw 2 mm or less Power supply wire Remote controller wiring Wiring diagram Use a 0 5 mm2 to 2 mm2 wire Address setting Refer to the Installation Manual of the outdoor unit for address setting When the Air to Ai...

Страница 15: ...ion mode If two remote controllers are used the latter operation overrides the former and their indications always reflect the result of the latter operation B Air to Air Heat Exchanger with DX Coil Unit system linked with air conditioners You can use the remote controller to ON OFF running Air conditioners and Air to Air Heat Exchanger with DX Coil Unit Remote controller for the Air to Air Heat E...

Страница 16: ...Exchanger with DX Coil Unit in the system using NRC 01HE For this operation it is necessary to change the settings Setting modifications are required for separate control Refer to 13 Advanced control on page 20 When the Air to Air Heat Exchanger with DX Coil Unit system linked with indoor air conditioners is used set the Air to Air Heat Exchanger with DX Coil Unit as Follower referring to Setting ...

Страница 17: ...ly 220 240 V For remote command For remote reply TCB IFCB 4E2 Error display Operating display Power supply maximum 240 VAC 0 5 A No voltage ON OFF Continuous signal 2 Switching the remote controller between invalid valid or low high from an external device separately sold External Input Perform connection with one of the units in the group Static signal only Insert the remote ON OFF adapter NRB 1H...

Страница 18: ... RN F or 60245 IEC 66 1 0 mm2 to 2 5 mm2 Contact is on during normal operation as factory default Contact is off during nighttime heat purge operation or while fan operation is off to protect the unit The operation output settings can be changed Refer to Setting for changing the operation output on page 21 4 Connecting an electric damper electric shutter External Output Connect to the terminal blo...

Страница 19: ...perations on the outdoor interface circuit board While the automatic addresses are being set up no remote controller operations can be performed Setup takes up to 10 minutes usually about 5 minutes When the power is turned on after automatic address setup It takes up to 10 minutes usually about 3 minutes for the outdoor unit to start operating after the power has been turned on Before the Air to A...

Страница 20: ...tion Fan speed 0000 Normal 0001 SA High EA Low active 0002 SA Low EA High active High may be Extra High 0000 Normal Adjusting this setting is necessary for all the Air to Air Heat Exchanger with DX Coil Units in the group 4C Nighttime heat purge 0000 Invalid 0001 0048 Start after Setting value x 1 hour s Setting for the time before the nighttime heat purge operation starts 0000 Nighttime heat purg...

Страница 21: ...t Exchanger with DX Coil Unit Setting for the header air conditioner Single operation of the Air to Air Heat Exchanger with DX Coil Unit is possible when operation of the Air to Air Heat Exchanger with DX Coil Unit is linked with that of the air conditioners Use the button of the wired remote controller While the Air to Air Heat Exchanger with DX Coil Unit is in operation is displayed on the remot...

Страница 22: ...to start operation Code SET DATA 0001 0002 EA Changing the ventilation mode Heat Exchange mode Automatic mode Factory default Ventilation Fan speed setting The setting of the ventilation Fan speed can be changed when using the remote controller for air conditioners RBC AMT32E RBC AMS41E or using the system without the remote controller Adjusting this setting is necessary for the header unit when u...

Страница 23: ... detected 0000 Signal transfer is on when an abnormal signal output is detected 0001 Signal transfer is on when the bypass mode signal output is detected Signal transfer is on during nighttime heat purge operation Signal transfer is off when the nighttime heat purge operation is on standby paused before the monitoring operation of the nighttime heat purge operation starts 14Fan characteristics MMD...

Страница 24: ...l static pressure Pa Air volume m3 h Current A Low High Extra High Low High Extra High MMD VNK1002HEXE TR Standard air volume 950 m3 h Lower limit air volume 640 m3 h Upper limit air volume 1140 m3 h MMD VN1002HEXE TR Standard air volume 950 m3 h Lower limit air volume 640 m3 h Upper limit air volume 1140 m3 h REQUIREMENT Use the unit between the minimum and maximum range of ventilation 0 100 200 ...

Страница 25: ...d test run is released after 60 minutes have passed and returns to the usual operation CAUTION Do not use the forced test run for cases other than the test run because it applies an excessive load to the devices Wired remote controller NRC 01HE 1 When the TEST button is pressed and held for at least 4 seconds TEST appears on the display and the test run mode is established While the test run is un...

Страница 26: ...R 4 0 2 MMD VNK1002HEXE TR MMD VN1002HEXE TR 4 0 2 Inspection cover Fixing lever Fixed part of Inspection cover Filters High efficiency filter 3 Remove the filters Remove the filters from the frame of the heat exchanger element 4 Clean the filters Clean the filters by dusting them or using a vacuum cleaner If the filters are badly clogged wash them by pressing them down in lukewarm water with a ne...

Страница 27: ...e of the O ring Replace the ring if it is damaged Water leakage Humidification element VNK type only Water leakage from the surface of humidification element Replace the humidification element if water squirts out of the surface of element Water leakage Dust and dirt on the surface of humidification element Vacuum the element if the air way is blocked with dust Take care not to damage the surface ...

Страница 28: ...nly 1 Open the service valve as necessary 2 In winter the season for using the humidifier check whether the antifreeze heater is turned on 3 Perform a test run and ensure that there is no water leakage NOTE When the humidifier is not used drain off water from the cistern tank and water supply pipe Model name Quantity of the humidification element MMD VNK502HEXE TR 1 MMD VNK802HEXE TR 2 MMD VNK1002...

Страница 29: ...it Error code list The table below shows the error codes See the table for details of error codes To confirm the code from the remote controller see Wired remote controller display in the table To confirm the code from the outdoor unit see 7 segment display on the outdoor unit in the table Wired remote controller display Check code Check code name Judging device 7 segment display on the outdoor un...

Страница 30: ...error 02 TK2 sensor error 03 TK3 sensor error 04 TK4 sensor error 05 TK5 sensor error Oil level detection temperature sensor error I F H15 H15 Miswiring of outdoor discharge temperature sensor TD2 I F H16 H16 01 TK1 oil circuit error 02 TK2 oil circuit error 03 TK3 oil circuit error 04 TK4 oil circuit error 05 TK5 oil circuit error Oil detection circuit error I F H25 H25 Miswiring of outdoor disch...

Страница 31: ...Advanced control in this manual Code 12 for the system 13 for indoor units and 14 for groups Line Indoor Group Line Indoor Group Line Indoor Group Line Indoor Group Settings Settings Settings Settings Did you change the setting for the lighting up hours of the Filter Sign If you did not put a tick against No change If you did put a tick against the item you selected For details see Advanced contro...

Страница 32: ...roup Line Indoor Group Line Indoor Group Settings Settings Settings Settings Indoor unit Indoor unit Indoor unit Indoor unit Model name Model name Model name Model name Check the addresses of the indoor units For details see Advanced control in this manual Code 12 for the system 13 for indoor units and 14 for groups Line Indoor Group Line Indoor Group Line Indoor Group Line Indoor Group Settings S...

Страница 33: ...s 0 3 kg m3 NOTE 1 If there are 2 or more refrigerating systems in a single refrigerating device the amounts of refrigerant should be as charged in each independent device For the amount of charge in this example The possible amount of leaked refrigerant gas in rooms A B and C is 10 kg The possible amount of leaked refrigerant gas in rooms D E and F is 15 kg NOTE 2 The standards for minimum room v...

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