Bosch IDS BOVA15 Installation Instructions Manual page 32

Installation Instructions
WARNING: HAZARDOUS VOLTAGE

When measuring resistance , make sure the unit is powered
off and wait 3 min before taking measurement.
P1/F1 (High pressure protection)
Are you running in
force mode?
No
Are the
service valves open?
Yes
Is there
abnormal pressure
in the system?
No
Is the system
overcharged?
No
Is the
high pressure switch
connected correctly and
resistance ≥1Ω?
No
Restart system
Figure 51
3 2 |
Is the
ambient temperature
Yes
>120°F ?
No
Yes
Quit force mode
No Open the service valves
Clear any blockage in
refrigerant,correct poor
Yes
heat exchange (air flow
restriction, motor failure)
Adjust refrigerant
Yes
Replace high
Yes
pressure switch
P2 (Low pressure protection)
H5 (System lockout, P2 occurs 5 times in 100 minutes)
Are the
service valves open?
Yes
Is there
abnormal pressure in the
system?
No
Is the
system undercharged?
No
Run
unit in cooling
or heating mode. Is the
suction pressure within 50 PSI
of checkpoint No.9
(cooling) or No.10
(heating)?
Yes
Restart system
Figure 52
Bosch IDS BOVA15 Split System Heat Pump - BTC 761701317 A (02.2022)
Open the service valves
No
Clear any blockage in the
Yes
refrigerant,Correct poor
heat exchange (air flow
restriction, motor failure)
Yes Adjust refrigerant
Replace pressure
No
transducer