Bosch CLIMATE 5000 VRF RDCI8/25-3 User manual

Before using your air conditioning unit, please read this manual carefully and keep it for future reference.
6 720 862 438 (2016/04)
CLIMATE 5000 VRF
RDCI Series – All DC Inverter Outdoor Units
RDCI8/25-3, RDCI10/28-3, RDCI12/33-3, RDCI14/40-3, RDCI16/45-3
User Manual

6 720 862 438 (2016/04) RDCI Series – All DC Inverter Outdoor Units
2 | IMPORTANT SAFETY INFORMATION
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 safty precautions listed here are divided into two categories. Important
safty information is listed which must be read carefully.
WARNING
Failure to observe a warning may result in serious injury.
CAUTION
Failure to observe a caution may result in injury or damage to the
equipment.
WARNING
■Ensure qualified personnel install the system.
■Do not undertake any service or maintenance yourself.
Ensure you appoint a qualified person or contact Bosch.
■Before servicing this equipment, ensure the electricity power
supply has been safely isolated.
■When replacing a fuse, ensure you read the installation manual for
the correct fuse rating and size.
Or contact Bosch for the correct fuse rating.
■When the unit is running fans will be operating. Keep hands away
from fan blades to prevent injury.
■Never inspect or service the unit by yourself.
Ask a qualified service person to perform this work.
■When disposing of the products, consult with local authority for
special disposal.
■Keep high frequency equipment away from the unit.
■The air conditioning unit should not be in contact with oils, gases,
or salty air.
Failure to do so may cause product failure.
■Ensure the equipment is grounded.
■To protect against refrigerant leaks, speak to a compe tent person.
When a system is installed in a small room, please install refrigerant
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 air conditioning unit until a qualified personal has been to
correct the fault.
Disposal: When disposing of any air conditioning products,
consult with local authority for special disposal.
CAUTION
■Prior to performing any maintenance work, ensure the unit is
switched off and the electrical power supply has been isolated.
■Do not remove the fan guard until the unit has been switched off
and the electrical power supply has been safely isolated.
■Ensure all of the equipment has been grounded.
■Ensure hands are free from contaminants and are dry prior to
performing any electrical maintenance work.
■Do not touch the heat exchanger fins.
These fins are sharp and could cause injury. If the fins are damaged,
this will effect the heat exchange performance.
■Ensure condense drainage has a fall away from the unit.
■Noise can be amplified should the air outlet be blocked on the
outdoor unit.
■Do not place any objects on or obstruct any part of the air
conditioning unit.
Refer to instillation instructions for clearances.
■Do not use the air conditioning unit where chemicals or gases are
present.
■Ensure only an authorised person operate the appliance.
2. DESCRIPTION OF UNIT
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2
11
4
3
5
Fig. 2-1
CONTENTS PAGE
IMPORTANT SAFETY INFORMATION ............................................ 2
DESCRIPTION OF UNIT ............................................................... 2
OPERATION AND PERFORMANCE ............................................... 3
TROUBLESHOOTING .................................................................. 3
MALFUNCTION .......................................................................... 5
FORCE COOLING AND QUERY ..................................................... 6
AFTER-SALES SERVICE .............................................................. 7

RDCI Series – All DC Inverter Outdoor Units 6 720 862 438 (2016/04)
OPERATION AND PERFORMANCE | 3
Table 2-1
1Air inlet (Located on the Left, right and rear sides.)
2Refrigerant pipe connective opening or outlet for wires
3Refrigerant pipe connective opening or outlet for wires
4Floor mount
5Air outlet (Located on the top of the unit, which will expel hot or cold air
depending on the demand.)
NOTE
■All the pictures in this manual are for explanation purposes only.
Your appliance will differ according to installation and application.
■On completion of installing the air conditioning unit, ensure
the electrical power supply is on to the unit for the minimum of
12hrs prior to operation. Failure to do so, may result in product
failure. Should the units electrical power supply be interrupted for
a period of more than 24hrs, then the above process will have to
be repeated.
■Ensure the air inlets and outlets are not blocked. This will decrease
the operational performance of the unit and could lead to product
failure.
3. OPERATION AND PERFORMANCE
■Cooling and heating operation
•This unit can perform simultaneous cooling and heating of the
indoor units pending on the demand. However the units installed
downstream of the S Box modules on the same refrigeration circuit
cannot perform heating and cooling simultaneously. A fault will be
will be displayed.
1. When set as the Heating Priority Mode, the indoor unit on Cooling
Mode will stop and there will be Standby or in Priority displayed on
the control panel. Those indoor units which are running on Heating
Mode will run continuously.
2. When the Cooling Priority Mode has been set, the indoor unit
on Heating Mode will stop and there will be Standby or No Priority
displayed on the control panel. Those indoor units which are
running on Cooling Mode will run continuously.
3. When priority mode is selected, the first indoor unit turned
on will be master and will override all the indoor units. If the first
unit turned on (master) is in heating mode, then all other indoor
units will be in heating mode or in standby mode. This process is
the same for cooling should the first unit (master) select a cooling
demand. Should a demand be selected on an indoor unit which is
different to the ‚master‘ indoor units demand, an error code will
appear on the controller.
■Features of heating operation
•When heating mode is selected, the unit will not blow warm air out
immediately. It can take 5-10 minutes to warm up depending on the
ambient temperature.
•During operation, the fan motor in the outdoor unit may stop
running under high temperatures.
•When a indoor unit is in standby, the fan will stop running to avoid
draft.
■Defrost in the heating operation
•During heating operation, frost can accumulate on the outdoor unit.
To increase efficiency, the unit will start defrosting automatcally
for approximately 2 - 10minutes depending on the amount of
accumulated frost. The frost will then thaw and drip away from the
unit.
•During defrosting, both the outdoor unit and indoor unit fans will
periodically stop.
■Operation conditions
•For optimum performance operate the system under the following
temperatures:
Table 3-1
Temperature
Mode
Outdoor
temperature
Indoor
temperature
Room
relative
humidity
Cooling mode -5°C ~ 48°C 17°C ~ 32°C below 80%
Heating mode -20°C ~ 24°C ≤27°C
Mixed mode -5°C ~ 24°C
Cooling mode
17°C ~ 32°C
Heating mode
≤27°C
NOTE
When the unit is running outside it‘s normal parameters, the unit
will shut down as a protection device is fitted inside the unit.
■Protection Device
This protection device will stop the unit automatically. When
protection device is activated, the running indicator flashes.
The protection device may have been activated as a result of the
following circumstances.
■Cooling operation:
•The air inlet or air outlet on the outdoor unit is blocked.
•Strong winds are continuously blowing on the air outlet.
■Heating operation:
•The indoor unit filters are blocked.
■Electrical power to the unit is interrupted
•Should the electrical power supply be interrupted, all operation of
the 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.
•Push the ON/OFF button again if you want to restart the unit
should the initialisation not work first time.
■Communication problem
Should the communication between units be lost, switch off the
electrical power supply to all indoor/outdoor units. Firstly re-
instate the power to the indoor units, then re-instate the power to
the outdoor unit.
■Heating capacity
•If the outdoor ambient temperature decreases, then the output of
heat discharged from the indoor units will also decrease.
•In cold temperatures the unit will default to heating mode only.
NOTE
Do not attempt to re-activate the electrical power supply to the unit
via the protection device until the problem has been solved.
4. TROUBLESHOOTING
CAUTION
■Should a malfunction occur, isolate the electrical power supply to
both the indoor and outdoor units. Or should the fuse or leakage
protector frequently trip. Contact a competent person.
Please read the following basic checks

6 720 862 438 (2016/04) RDCI Series – All DC Inverter Outdoor Units
4 | TROUBLESHOOTING
Table.4-1
Problems Causes
Normal Operation
Outdoor unit
•White mist or water
•The sound of “hissing”
•Fans may stop during defrost mode, the sound of valves
operating is normal
•When the units starts and shuts down, normal sounds like
‚running water‘ and valves opening/closing will be heard for
up to 3-15 minutes.
•The unit may make a ‚hissing‘ noise when the temperature
inside the heat exchanger changes.
•Household smells can adhere to the units, cleaning the
filters during service will improve this.
•Should the electrical powers supply be interrupted.
•Other equipment preheating process stops cooling
operation.
•The operator sets an opposite mode against the fixed
cooling or heating mode.
•The fans inside the indoor units may stop periodically to
avoid discharging the incorrect temperature of air into
the room. The fans will start again once the unit has the
sufficient temperature to discharge.
•The master unit with slave units for different purposes,
when abnormal accident happen, the director will illustrate.
•When mode switches
Indoor unit
•Bad odour
•Operation LED flashes
•No priority of Standby on panel is
displayed
•Thawing frost light flashes in 30s
Basic Checks
•Unit is operating at random periods •Incorrect settings in the programmer.
•No operation
•Check there isn‘t or has been an interruption to the electrical
power supply (power cut).
•Ensure all electrical power supply switches are in the ‚on‘
position.
•Has a fuse tripped and interrupted the power supply.
Ensure a competent person inspects this.
•Incorrect settings in programmer.
•Insufficient cooling
•Insufficient heating
•Whether the air inlet and air outlet of the outdoor unit is
blocked.
•Ensure the windows and doors to the property are not open.
•Ensure all filter on units are clean, this will impinge the
performance.
•Ensure the air deflector on the indoor units are angled in the
correct position.
•The fan is running on low speed.
•Ensure the requested temperature for the room is adequate.
•The operator has selected cooling and heating
simultaneously. Indicator LED for standby or no priority will
be displayed.

RDCI Series – All DC Inverter Outdoor Units 6 720 862 438 (2016/04)
MALFUNCTION | 5
5. MALFUNCTION
Table 5-1
No. Error code Error or protection type Note
1E0 Outdoor unit communication error Only displays on auxiliary unit
2E1 Phase error
3E2 Communication error with indoor unit
Should there be no communication after 20 minutes from
when the unit is first powered up or no communication for
longer than 2 minutes after the 20 minutes initial power up
4E4 Outdoor temp. sensor error
5E5 Voltage protection
6E7 Discharge sensor error
Once the unit has run for 10 minutes, the unit will allow a
discharge temperature of less than 15 degrees at a pressure
of more than 3.5MPa for 2 minutes. After 2 minutes the
unit will fault and will have to be powered off/ on to reset the
fault.
7E8 Outdoor unit address error
8xE9 S11 setting does not match the capacity
9xH0 Communication error between DSP and main chip X represents a system, 1 is A system, 2 is B system
10 H1 Communication error between 0537 and main chip X represents a system, 1 is A system, 2 is B system
11 H2 Qty. of outdoor units decreases error Only displayed on main unit
12 H3 Qty. of outdoor units increases error Only displayed on main unit
13 xH4 P6 protection has been activated 3 times in 60 minutes Must restart electrical power supply to unit to clear the fault
14 H5 P2 protection has been activated 3 times in 60 minutes. Must restart electrical power supply to unit to clear the fault
15 H6 P4 protection has been activated 3 times in 100 minutes. Must restart electrical power supply to unit to clear the fault
16 H7 Qty. of indoor units not recognised Indoor units communication lost for more than 3 munites;
Fault will no clear until the quantity of units are recovered
17 H8 High pressure sensor error Air discharging pressure Pc ≤ 0.3MPa
18 H9 P9 protection has been activated 3 times in 60 minutes Must restart electrical power supply to unit to clear the fault
19 C7 PL protection has been activated 3 times in 100 minutes. Must restart electrical power supply to unit to clear the fault
20 xHd Auxiliary unit error (X=1,2,3, e.g, 1Hd stands for auxiliary unit1 error) X represents an auxiliary unit
21 P0 Inverter compressor maximum temp. protection
22 P1 High pressure protection
23 P2 Low pressure protection Should ‘P2’ fault occur more than 3 times in 60 minutes, the
unit will then display ‘H5’ fault
24 xP3 Compressor current protection X represents a system, 1 is A system, 2 is B system
25 P4 Discharge temp. protection Should ‘P6’ fault occur more than 3 times in 100 minutes,
the unit will then display ‘H6’ fault
26 P5 High condenser temp. protection
27 x (P6) Inverter module protection
X represents a system, 1 is A system, 2 is B system. Should
‘P6’ fault occur more than 3 times in 60 minutes, then the
unit will display a ‘H4’ fault. If ‘H4’ fault is displayed for more
than 10 minutes, then ‘xP6’ fault will be displayed
28 P7 Main inverter current protection
29 P8 Auxiliary inverter current protection
30 P9 DC fan protection Should ‘P9’ fault occur more than 3 times in 60 minutes, the
unit will then display ‘H9’ fault
31 PL Main inverter module temp. protection
32 xL0 DC compressor module error X represents a system, 1 is A system, 2 is B system
33 xL1 DC bus low pressure protection X represents a system, 1 is A system, 2 is B system
34 xL2 DC bus high pressure protection X represents a system, 1 is A system, 2 is B system
35 xL3 Reserve X represents a system, 1 is A system, 2 is B system
36 xL4 MCE error/synchronization/closed loop X represents a system, 1 is A system, 2 is B system
37 xL5 Zero speed protection X represents a system, 1 is A system, 2 is B system
38 xL6 Reserve X represents a system, 1 is A system, 2 is B system
39 xL7 Phase error protection X represents a system, 1 is A system, 2 is B system
40 xL8 Protection should the speed change be greater than 15 Hz before and
after X represents a system, 1 is A system, 2 is B system
41 xL9 Protection should the required speed fluctuate by more than 15Hz X represents a system, 1 is A system, 2 is B system

6 720 862 438 (2016/04) RDCI Series – All DC Inverter Outdoor Units
6 | FORCE COOLING AND QUERY
6. FORCE COOLING AND QUERY
■Force Cooling
Once the Force Cooling button has been pressed (see diagram), all the
indoor units will be forced into cooling mode and the fan speeds will be
running on maximum.
Fig. 6-1
■SW2 Display Codes
Table 6-1
No. Normal display Display content Note
10. -- Outdoor unit address 0,1,2,3
21. -- Individual Outdoor unit capacity 8,10,12,14,16
32. -- Modular outdoor unit qty. Available for main unit
43. -- Operation mode 0,2,3,4,5,6
54. -- Total capacity of outdoor units Capacity requirement
65. -- Cooling capacity (Auxiliary unit only) display capacity for main mode
76. -- Heating capacity (Auxiliary unit only) display capacity for main mode
87. -- T4 ambient temp. revision of cooling capacity
98. -- T4 ambient temp. revision of heating capacity
10 9. -- The outdoor unit actual operating capacity Capacity requirement
11 10. -- Speed of fan A 0, 1,······,14,15
12 11. -- Speed of fan B 0, 1,······,14,15
13 12. -- T2 average temp. Actual value
14 13. -- T2B average temp. Actual value
15 14. -- T3 pipe temp. (Left pipe temp.) Actual value
16 15. -- T5 pipe temp. (Right pipe temp.) Actual value
17 16. -- T4 ambient temp. Actual value
18 17. -- Discharge temp. of inverter compressor A Actual value
19 18. -- Discharge temp. of inverter compressor B Actual value
20 19. -- Modual temp. Actual value
21 20. -- Discharge pressure corresponding to the saturation temperature Actual value + 30
22 21. -- The minimum overheating temp. of discharge Actual value
23 22. -- Current of inverter compressor A Actual value
24 23. -- Current of inverter compressor B Actual value
25 24. -- State of the evaporator or condenser 0,1,2,3
26 25. -- Opening angle of EXV A Actual value ÷ 8
27 26. -- Opening angle of EXV B Actual value ÷ 8
28 27. -- High pressure Actual value × 10
29 28. -- Qty. of indoor units That can communicate with indoor units
30 29. -- Qty. of cooling indoor units Actual value
31 30. -- Qty. of heating indoor units Actual value
32 31. -- Reserve
33 32. -- Night noise control mode 0,1,2,3
34 33. -- Static pressure mode 0,1,2,3
35 34. -- DC voltage A Actual value÷10
36 35. -- DC voltage B Actual value÷10
37 36. -- Reserve
38 37. -- Reserve Display code 8.8.8
39 38. -- Remove fault number of times
40 39. -- Check end
MAIN BOARD
(OUTDOOR UNIT) Query button
Forced cooling button
CHECK COOL

RDCI Series – All DC Inverter Outdoor Units 6 720 862 438 (2016/04)
AFTER-SALES SERVICE | 7
Display contents
Normal display:
When in standby, the higher positioned display will show the address of the outdoor unit, and the low positioned display will show the Qty. of indoor units that can
communicate with outdoor unit. When the unit is operating, it will display the rotation frequency of the compressor.
Operation mode:
0-Off; 2-Cooling; 3-Heating; 4-Forced cooling; 5-Mixed cooling; 6-Mixed Heating.
Fan speed:
0-stop; 1~15 speed increase sequentially, 15 is the max. fan speed. EXV opening angle: Pulse count=Display value × 8;
State of the evaporator or condenser:
0-close/condenser; 1-All evaporator; 2-Left evaporator/right condenser; 3-Left evaporator/close
Night noise control mode:
0-Night silent mode (factory settings); 1-silent mode; 2-Super silent mode; 3-No silent mode
Static pressure mode:
0-static pressure is 0 Mpa; 1-Low static pressure; 2-Medium static pressrue; 3-High static pressure
7. AFTER-SALES SERVICE
If the air conditioning unit operates abnormally, please turn of the equipment and contact the after sales team for support. Ensure only qualified personal carry
out work on this equipment.