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Bosch IDS 2.0 Service Manual
07.2021 | Bosch Thermotechnology Corp.
Data subject to change
13.9 System Charge
Figure 46
Ye s
Is ambient temp
within 55-120°F?
Is indoor temperature
between 70-80°F?
No
Temperature out of range,
charge unit via weigh in
method. Refer to IOM
Start the system in cooling mode for
at least 10 minutes
Short press “Force” button (SW2), and
operate the system for at least 20 min
Measure and calculate superheat and
subcool, refer to IOM for instructions
Are SH and SC in
Range A or B in
Table
Ye s
No service required
Are SH and SC in
Range C in Table
No
Verify SH and SC are
correctly measured and
refrigerant is being
adjusted correctly, refer
to IOM
Adjust charge according to IOM
Are SH and SC in
Range A or B in
Table
Ye s
No service required
No
Ye s
Is there a blockage
on the air filter?
Ye s
Remove blockage, clean
filter, or replace filter
Are the blower
motor speed
settings correct?
Refer to airflow
performance chart
in IOM
No
Change blower fan
speeds through SW6-1,
SW6-2 dip switches
Push checkpoint button to display
checkpoint #16 for discharge superheat
Is checkpoint value
#16 >40F?
Ye s
No service required
No
Ye s
No
Recover charge and
evacuate
No
Model Range SC/°F SH/°F
A 10±2 10~18
B 8±2 7~10
C 6±2 5~7
A 8±2 9~18
B 6±2 7~9
C 5±2 5~7
A 8±2 8~18
B 6±2 6~8
C 5±2 5~7
24K/36K
48K
60K
NOTE: Use Range A for indoor units with adjustable TXV and
non-adjustable TXV.
Use Range B for indoor units with non-adjustable TXV.
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