Bosch IDS BOVA15 User Manual

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Installation Instructions
Bosch IDS BOVA15 Split System Heat Pump - BTC 761701317 A (02.2022)
15.11 Error Code Troubleshooting
WARNING: HAZARDOUS VOLTAGE
 When measuring resistance , make sure the unit is powered
off and wait 3 min before taking measurement.
Figure 42
C3 (Condenser coil sensor (T3) is not reading correctly in cooling)
Is the
location of T3
sensor wrong?
Correct the location
Refer to wiring
diagram for
correct connection
Replace control board
Yes
No
Yes
No
Is the
T3 sensor wire
plugged in
correctly?
No
No
Is the
resistance of
T3 sensor in the
range of Table
15?
Yes
Replace T3 sensor
Is the
T4 sensor wire
plugged in
correctly?
Refer to wiring
diagram for
correct connection
Is the
resistance of
T4 sensor in the
range of Table
15?
Yes
No
Yes
Replace T4 sensor
Is
there another
heat source near
T3/T4?
No
Remove all other
heat sources
Yes
Is the
service valve
closed or the connection
pipe bent/
blocked?
Open service valve or
replace the pipe
Yes
No
WARNING: HAZARDOUS VOLTAGE
 When measuring resistance , make sure the unit is powered
off and wait 3 min before taking measurement.
Figure 43
E4 (Temperature sensor fault (T3, T4, T5, T3L))
Is the
T3/T4/T5/T3L
sensor wired
correctly?
Replace sensor
Replace sensor
Replace control board
Refer to wiring
diagram for
correct wiring
No
Yes
No
Yes
No
Yes
Is the
resistance of T3/T4/T3L
in the range of Table
15?
Is the
resistance of T5
in the range of Table
16?
No need to service
Yes
No
Is
ambient
temperature <5°F?
Restart system
Yes

Bosch IDS BOVA15 Specifications

General

Brand	Bosch
Model	IDS BOVA15
Category	Heat Pump
Language	English