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Multi Variable Air Conditioners One-way Cassette Type Indoor Unit 

19 

6 Routine Maintenance 

 

(1)  Do turn off the unit and cut off the main power supply when cleaning the air conditioner to 

avoid electric shock or injury. 

(2)  Stand at solid table when cleaning the unit. 
(3)  Do not clean the unit with hot water whose temperature is higher than 45°C to prevent fade 

or deformation. 

(4)  Do not dry the filters by fire, or it may catch fire or become deformed. 

(5)  Clean the filter with a wet cloth dipped in neutral detergent. 

(6)  Please contact after-sales service staff if there is abnormal situation. 

6.1 Cleaning of Filter 

(1)  Remove the filters from inlet of IDU. Use a vacuum cleaner to remove dust. If the filters 

are dirty, wash them with warm water and mild detergent, and dry the filters in the shade. 

(2)  If the unit used in the environment with much dust, please clean it regularly (Usually once 

every two weeks). 

6.2 Maintenance before the Seasonal Use 

(1)  Check if the air inlet and air outlet of indoor and outdoor unit are blocked. 

(2)  Check if securely grounded. 

(3)  Check if all the power cord and communication cable are securely connected. 

(4)  Check if any error code displayed after energized. 

6.3 Maintenance after the Seasonal Use 

(1)  Set the unit in fan mode for half a day in a sunny day to dry the inner part of unit; 

(2)  When the unit won’t be used for a long time, please cut off power supply for energy 

saving; the characters on the wired controller screen will disappear after cutting off the 

power supply. 

7 Table of Error Codes for Indoor Unit 

Error 

Code 

Content 

Error 

Code 

Content 

Error 

Code 

Content 

L0 

Indoor Unit Error 

LA 

Indoor Units 
Incompatibility Error 

d9 

Jumper Cap Error 

L1 

Indoor Fan 
Protection 

LH 

Low Air Quality 
Warning 

dA 

Indoor Unit Network 
Address Error 

L2 

E-heater Protection 

LC 

ODU-IDU 
Incompatibility Error 

dH 

Wired Controller 
PCB Error 

L3 

Water Full Protection 

d1 

Indoor Unit PCB 
Error 

dC 

Capacity DIP Switch 
Setting Error. 

L4 

Wired Controller 
Power Supply Error 

d3 

Ambient 
Temperature Sensor 
Error 

dL 

Outlet Air 
Temperature 
Sensor Error 

L5 

Freeze Protection 

d4 

Inlet Pipe 
Temperature Sensor 
Error 

dE 

Indoor Unit CO

2

 

Sensor Error 

Содержание GMV-ND07TD/A-T

Страница 1: ...Owner s Manual Original Instructions Commercial Air Conditioners Multi Variable Air Conditioners One way Cassette Type Indoor Unit Models GMV ND07TD A T U GMV ND09TD A T U GMV ND12TD A T U...

Страница 2: ...ld well keep this manual 6 If this unit fails to operate normally please contact our service center as soon as possible and provide the following information 1 Content on the nameplate model number co...

Страница 3: ...turer 3 After verification the defect of product is directly caused by corrosive gas 4 After verification defects are due to improper operation during transportation of product 5 Operate repair mainta...

Страница 4: ...Drainage System Testing 9 4 4 Panel Installation 12 4 5 Installation of Wired Controller 13 5 Wiring Work 14 5 1 Connection of Wire and Patch Board Terminal 14 5 2 Power Cord Connection 15 5 3 Connec...

Страница 5: ...en charging welding process Do charge nitrogen when welding the pipes 11 Never short circuit or cancel the pressure switch to prevent unit damage 12 As for the unit controlled by the wired controller...

Страница 6: ...er for help Any personal injury or property loss caused by improper installation improper debug unnecessary repair or not following the instructions of this manual should not be the responsibility of...

Страница 7: ...e remote controller 14 Tapping screw 2 Used for fixing the remote controller holder 3 2 Installation Position Selection 1 The appliance shall not be installed in the laundry 2 The location should be a...

Страница 8: ...gulations 2 Only qualified personnel can carry out installation work please contact with local dealer before installation 3 Make sure all the installation work completed before energizing 3 3 Requirem...

Страница 9: ...eld or strong interference it is necessary to use shielded wire 3 3 2 Selection of Communication Wire between Indoor Unit and Indoor Unit or Outdoor Unit Fig 3 3 2 Material Type Total Length L m ft of...

Страница 10: ...ove sheet is based on ambient temperature of 40 104 4 The circuit breaker specification in above sheet is based on ambient temperature of 40 104 If the working condition is different please adjust it...

Страница 11: ...er and lower sides of the hanger bracket The washer fixing plate will prevent the washer from falling 3 The usage of paper pattern Refer to paper pattern of installation for ceiling opening dimension...

Страница 12: ...nd then tighten the flaring nut with hand as shown in Fig 4 2 1 2 Tighten the flaring nut with torque wrench Fig 4 2 1 Pipe diameter mm inch Torque N m 6 35 1 4 15 30 9 52 3 8 35 40 12 7 1 2 45 50 15...

Страница 13: ...to the drainage pipe Improper installation may lead to water leakage and damp the furniture and other things in the room 7 You can buy normal hard PVC pipe used as the drainage pipe During connection...

Страница 14: ...ation height of raising pipe for drainage should be lower than B The gradient from raising pipe towards drainage direction should be at least 1 2 If the raising pipe is vetical with the unit the raisi...

Страница 15: ...e g water pump etc 2 In case of commissioning finished please energize the IDUs and switch to cooling or dry mode meanwhile the water pump operates you can check the draining through the drain socket...

Страница 16: ...roper decorative panel installation could cause the following problems Fig 4 4 1 2 Ensure that its clearance free between decoration panel and ceiling board after installation if not please adjust the...

Страница 17: ...les and then install the corresponding screw cover 4 Close the horizon lover connect the butt terminal and arrange the wires 5 After tightening screws reinstall the air inlet grille Fig 4 4 4 4 5 Inst...

Страница 18: ...e communication wires should be separated from power cord and connection wire between indoor unit 8 Adjust the static pressure via wired controller according to site circumstance 5 1 Connection of Wir...

Страница 19: ...it can t operate normally Fig 5 2 1 1 Detach the electric box lid 2 Let the power cord pass through the wiring through holes 3 Connect wires according to Fig 5 2 1 4 Fix the power cord with wiring cla...

Страница 20: ...1 Open electric box cover of indoor unit 2 Let the communication wire go through the rubber ring 3 Connect the communication wire to terminal H1 and H2 of indoor 4 bit wiring board 4 Fix the communica...

Страница 21: ...s that must be set as master one and slave one 4 One wired controller can control 16 indoor unitS in maximum at the same time as shown in Fig 5 5 1 1 The type of indoor units must be the same if they...

Страница 22: ...Multi Variable Air Conditioners One way Cassette Type Indoor Unit 18 Fig 5 5 1...

Страница 23: ...outlet of indoor and outdoor unit are blocked 2 Check if securely grounded 3 Check if all the power cord and communication cable are securely connected 4 Check if any error code displayed after energ...

Страница 24: ...y leakage of electricity Input voltage is too low Defect of main PC board The unit stops after running for a while The inlet or outlet of ODU or IDU are blocked by obstacle Poor cooling effect The fil...

Страница 25: ......

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