Bosch ODU Split 6 - Split Outdoor Unit Error Handling

Error handling instructions for Split outdoor unit
Split ODU – 6 720 817 722 (2015/06)
3
Handling refrigerant
The air to water outdoor unit is filled with R410A refrigerant.
▶ Only qualified and authorised refrigeration engineers may work on
the refrigerant circuit.
▶ For all work with refrigerant, wear suitable safety gloves and goggles.
What to do if refrigerant leaks
If refrigerant leaks and touches the skin, it can cause frostbite.
▶ In case of a refrigerant leak, never touch any part of the air to water
outdoor unit.
▶ Avoid skin or eye contact with refrigerant.
▶ Seek medical attention if you get refrigerant on your skin or in your
eyes.
▶ If the refrigerant leaks please contact your installer immediately.
Handover to the user
When handing over the heating system, instruct the user in its operation
and operating conditions.
▶ Explain the operation - with particular emphasis on all safety-related
actions.
▶ Explain that conversions and repairs must only be carried out by an
approved contractor.
▶ Point out the need for inspections and maintenance for safe and
environmentally-compatible operation.
▶ The installation and operating instructions must be given to the user
for keeping.
2 Error handling instructions for Split outdoor unit
2.1 Names of units
2.2 List of error codes
Supplier name for ODU BTT name for ODU
AHUW036A2 ODU Split 2
AHUW056A2 ODU Split 4
AHUW076A2 ODU Split 6
AHUW096A2 ODU Split 8
AHUW126A2 ODU Split 11s
AHUW146A2 ODU Split 13s
AHUW156A2/166A2 ODU Split 15s
AHUW128A2 ODU Split 11t
AHUW148A2 ODU Split 13t
AHUW158A2/168A2 ODU Split 15t
Table 2 Names of units
HMI Error code ODU Error code Description Error characteristc Remark
5600, 5601 21 DC Peak (IPM Fault)
IPM = Intelligent Power module
Restart 10x/hour,
then blocked
Compressor broken or too much refrigerant in
compressor
5602, 5603 22 CT 2 (Max CT) Restart after
problem has
vanished
Inverter current > 14 A
5604, 5605 23 DC Link Voltage is low or high Restart after
problem has
vanished
Direct voltage
1~: <140 VDC or >480 (3kW: 420) VDC
3~: <320VDC or >780VDC
5610, 5611 26 Problem in DC Compressor
positioning
Restart 10x/hour,
then blocked
Wrong orientation of compressor connections
(UVW)
5612, 5613 27 PSC Fault Restart 10x/hour,
then blocked
High current IGBT (check reactor)
5616, 5617 29 High current at Compressor
phases
Restart 10x/hour,
then blocked
5618, 5619 32 Temperature at discharge-pipe is
too high
Restart after
problem has
vanished
Hot gas temperature TH5 >105 °C (check
refrigerant load)
5666, 5667 35 Low Pressure error Restart 3x/hour,
then blocked
Low Pressure < 0 kPa
( – 49.5 °C)
5622, 5623 41 Problem in discharge-pipe
temperature sensor
Direct shut-down Sensor TH5 broken (200k >25 °C)
5662, 5663 43 High-pressure sensor (Open/
Short)
Direct shut-down LP/HP sensor broken
5624, 5625 44 Problem in ambient temperature
sensor
Direct shut-down Sensor TH7 broken (10k >25 °C)
5626, 5627 45 Problem in condenser-middle-pipe
temperature sensor
Direct shut-down Sensor TH8 broken (5k >25 °C)
5628, 5629 46 Problem in suction-pipe
temperature sensor
Direct shut-down Sensor TH4 broken (5k >25 °C)
Table 3 Error codes