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CONTENTS
1. IMPORTANT SAFETY INFORMATION ..................................... 3
2. DESRIPTION OF UNIT ........................................................... 3
3. OPERATING CONDITIONS .................................................... 4
4. OPERATION AND PERFORMANCE ......................................... 4
5. ERROR CODES .................................................................... 6
6. NORMAL OPERATION OF UNIT ............................................. 8
7. TROUBLESHOOTING ............................................................ 8
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
Only authorised competent personnel should operate this unit.
Failure to follow this instruction may lead to injury or damage to
the equipment.
Do not undertake any service or maintenance yourself.
Ensure you appoint a qualified personnel or contact Bosch.
Before servicing this equipment, ensure the electricity power
supply has been isolated.
Don't allow the indoor unit or the remote controller to get wet.
It may cause an electric shock or a fire.
Don't press the button of the remote controller with a hard, pointed
object.
The remote controller may be damaged.
Don't replace fuse with incorrect size. Never use copper wire to
replace fuse.
This may cause serious injury or damage.
It is not good for your health to expose your body to the air flow for
a long time.
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.
When disposing the products, consult with local
authorities for special disposal.
To protect against refrigerant leaks, speak to
a competent person.
When a system is installed in a small room, install refrigerant leak
detection equipment.
Heat Pump Mini VRF Outdoor Unit
PAGE
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.
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.
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.
Do not place items which might be damaged by moisture under the
indoor unit.
Condensation may form if the humidity is above 80%, the drain outlet is
blocked or the filter is dirty.
Ensure condense drainage has a consistent fall away from the unit.
Ensure you do not touch internal parts of the controller.
This could result in serious injury.
When the total capacity of the indoor unit exceeds 100%, ensure
the indoor unit is attenuated.
When the capacity of the indoor unit is greater than or equal to the
sum of 120%, in order to ensure effectiveness of the indoor unit,
ensure you turn the indoor unit on one at a time.
The outdoor unit should be maintained periodically to ensure long
life span of the equipment.
Ensure the interconnecting signal wires do not touch bare copper
pipework. The refrigerant circuit will get hot and melt the cables.
2. DESRIPTION 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
Force Cooling Control
Force cooling control of the outdoor unit is to be pressed when test running.
The unit will start in cooling and once the outdoor unit changes to 44 Hz the
running of the indoor unit will run in high speed. Press the button again to exit
forced cooling mode.
IMPORTANT SAFETY INFORMATION | 3
CAUTION
Display control button sw2
sw1
sw2
MAIN BOARD
(OUTDOOR UNIT)
6 720 862 440 (2016/04)
Fig. 2-1
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