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MDCI Series – All DC Inverter Outdoor Units (Three phase) 

6 720 862 442 (2016/04)

IMPORTANT SAFETY INFORMATION  |  3

1.  IMPORTANT SAFETY INFORMATION

To prevent injury or property damage, the following instructions must 

be followed. Incorrect operation due to the instructions in this manual 

not being followed may cause harm or damage.

The safety precautions listed here are divided into two categories. In either 
case, important safety information is listed which must be read carefully.

 

   

WARNING

Failure to observe these warnings may result in serious injury. 
Only qualified personnel should work on this system.

 

   

CAUTION

Failure to observe a caution may result in injury or damage to the 
equipment.

 

   WARNING

Before servicing this equipment, ensure the electricity power 

supply has been isolated.

Never allow the indoor unit or the remote controller to get wet.

It may cause an electric shock.

Never press the buttons on the remote controller with a hard, 

pointed object. 

The remote controller may be damaged. 

Never replace fuse with incorrect size.  

Never use copper wire to replace fuse. This may cause serious injury 
or damage. 

Where oil, gas, salty air(near the coast), caustic gas exist, this 

may damage the unit and shorten the life span of the unit. If the 

above locations can‘t be avoided, ensure you apply anti corrosion 

to protect the heat exchanger.

When the unit is running fans will be operating.  

Keep hands away from fan blades to prevent injury.

Ensure cleaning products do not come into contact with any of the 

units electrical components. 

Caution should also be taken when using any other flammable or 
corrosive products close to the unit.

Never put any objects into the air inlet or outlet. 

Objects touching the fan at high speed can be dangerous.

Never inspect or service the unit by yourself. 

Ask a qualified person to perform this work. 

When disposing the products, consult with local 

authorities for special disposal.

When a system is installed in a small room, install leak 

detection equipment. 

Should refrigerant come in to contact with a naked flame, the gas 

can be extremely harmful.  

Should a refrigerant leak occur, switch off the power to the air 

conditioning unit. Turn off any combustible heating devices, 

ventilate the room and contact a competent person. 

Do not use the air conditioning unit until a qualified person has been to 
correct the fault.

 

   CAUTION

Prior to performing any maintenance work, ensure the unit is 

switched off and the electrical power supply has been isolated. 

Ensure all of the equipment has been grounded. 

Do not remove the fan guard until the unit has been switched off 

and the electrical power supply has been safely isolated.

 

CONTENTS PAGE

IMPORTANT SAFETY INFORMATION ............................................ 3

DESCRIPTION OF UNIT ............................................................... 4

OPEARTING CONDITIONS .......................................................... 5

OPERATION AND PERFORMANCE ............................................... 5

ERROR CODES ........................................................................... 6

NORMAL OPERATION OF UNIT .................................................... 7

TROUBLESHOOTING .................................................................. 7

Содержание MDCI20-3

Страница 1: ...ur air conditioning unit please read this manual carefully and keep it for future reference 6 720 862 442 2016 04 User manual CLIMATE 5000 VRF MDCISeries AllDCInverterOutdoorUnits Threephase MDCI20 3 MDCI22 3 MDCI26 3 ...

Страница 2: ... Refrigerant pipework connector 4 Connection pipework Fig 1 NOTE All the pictures in this manual are for explanation purposes only They may be slightly different from the air conditioning unit you have purchased dependent on model Indoor unit Outdoor unit ...

Страница 3: ...tect the heat exchanger When the unit is running fans will be operating Keep hands away from fan blades to prevent injury Ensure cleaning products do not come into contact with any of the units electrical components Caution should also be taken when using any other flammable or corrosive products close to the unit Never put any objects into the air inlet or outlet Objects touching the fan at high ...

Страница 4: ...ESCRIPTION OF UNIT The air conditioning system consists of an outdoor unit indoor units connective pipework and a way of controlling the system remote controller see Fig 1 Force Cooling Control Force cooling control Button sw1 Display control button sw2 MAIN BOARD OUTDOOR UNIT sw1 sw2 Force Cooling Control Fig 2 1 Force cooling control of the outdoor unit is to be pressed when test running The uni...

Страница 5: ... via the protection device until the problem has been solved 4 2 Electrical power to the unit is interrupted Shouldtheelectricalpowersupplybeinterrupted alloperationofthe unit will stop Isolate the main electrical supply to the unit until the electrical power supply has returned and stabilised When the electrical power supply is re established the controller will flash and will begin to initialise...

Страница 6: ... do not match Irrecoverable HF 8 Reserved Recoverable E1 9 Communication fault between the outdoor and indoor units Recoverable E2 10 T3 T4 temperature sensor fault Recoverable E4 11 Voltage protection fault or a lack of Phase B Phase N Recoverable E5 12 DC fan motor fault Recoverable E6 13 Discharge temperature sensor fault Recoverable E7 14 A fan in the A region run for more than 5 minutes in he...

Страница 7: ... until the unit has stopped When the drain pump optional accessories is in operation a noise will be heard When the system stops after heating the system will encounter a noise whilst the refrigerant settles down Expansion valves shut down and refrigerant gets trapped in the system Symptom 4 2 Indoor unit outdoor unit A continuous low hissing sound is heard when the system is in operation This is ...

Страница 8: ...rrect refrigerant pressure Vacuum and recharge refrigerant Maintenance or change compressor Install manostat A qualified person should investigate Low cooling effect Outdoor unit and indoor unit heat exchangers are dirty The air filter is dirty Inlet outlet of indoor outdoor units is blocked Doors and windows are open Direct sunshine on outdoor unit Too much heat resource Outdoor temp is too high ...

Страница 9: ...ler need changing The power supply is off The TEMP indicator does not come on Check whether the MODE indicated on the display is FAN ONLY The temperature cannot be set during FAN mode The indication on the display disappears after of time Check whether the timer operation has come to an end and TIMER OFF is not indicated on the display The air conditioning unit operation will stop at it s set time...

Страница 10: ...6 720 862 442 2016 04 MDCI Series All DC Inverter Outdoor Units Three phase NOTES 10 ...

Страница 11: ...MDCI Series All DC Inverter Outdoor Units Three phase 6 720 862 442 2016 04 NOTES 11 ...

Страница 12: ......

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