Bosch MDCI20-3 User Manual Download | Manualshive

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Before using your 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

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

MDCI20-3, MDCI22-3, MDCI26-3

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Summary of Contents for MDCI20-3

Page 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 ...

Page 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 ...

Page 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 ...

Page 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...

Page 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...

Page 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...

Page 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 ...

Page 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 ...

Page 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...

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

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

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