Bosch BOVA Series Installation Instructions Manual page 38

3 8 | Bosch IDS 2.0 BOVA
SYSTEM FAULTS
Display shows nothing
System won't start
SYSTEM
Capacity is insuffcient
Display is not normal when running
Cool when hea ng requirement
P1
P2/H5
P3
P5
P0
REFRIGERANT
CIRCUIT
P4
PH
C3 (T3 is seated fault)
E7 (T5 is seated fault)
ALT (Ambient temp. beyond the license)
E4
H8
F1
E6
P8
ELECTRICAL OR
CONTROL
L0-L9
E9
H0
E5
Figure 63
C-cooling H-Heating P-Primary Causes S-Secondary Causes Comp.-compressor RES.-Restrictions REF.-Refrigeration DEF.-Defective CIR.-Circuit EEV-Electronic expansion valve REV.-Reversing Valve
PT-Pressure Transducer T3-Outdoor coil temp. sensor T4-Ambient temp. sensor T5-Comp. discharge temp. sensor Tf-Module radiator fi n temp. sensor HPS-High pressure switch
RES I.D. AIRFLOW -Perhaps failue of fan motor or fan capacitor or fi lterRES O.D. AIRFLOW -Perhaps failue of fan motor or fan capacitor or recirculation or blocking coil RES O.D. RADIATOR-Perhaps
failue of blocking radiator
Data subject to change
C P S
H P S
C P P S
H P P S
C P P P P
H P P P P
C P
H P
H P
C P P
H P
C P P
H P P
C P P
H P
C P P
H
C P P S
H P P S
C P
H P
C
H
C
C
H
C
H
C
H
C
H
C
H
C S P
H S P
C P
H P
C S P
H S P
C P
H P
C P
H P
C P S
H P S
Installation Instructions
S S S S
S S S S
S
S P
S P
S S
S S
S P
S P
S S S
S
S S
S S
P P S S
P P S
P
S P
S P
S
S
P P P
P P P
P
P
S
02.2019 | Bosch Thermotechnology Corp.
S
S
S
P
P
P
P