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16 Wiring Diagram
16.1 BOVA24/36-15 (2/3 Ton)
FAN
W
V
U
Y/G
COMP.
Terminal block
RED
Power in
BK
USE COPPER
CONDUCTORS ONLY
ON
Unused
SW4-1
*
OFF
Must be set at OFF position
ON
Unused
SW4-2
Must be set at OFF position
OFF
Adaptive capacity output disable
ON
SW4-3
Adaptive capacity output enable
OFF
Accelerated cooling/heating
ON
SW4-4
*
Normally cooling/heating
OFF
Operating time is reduce 10%
ON
SW5-1
*
Enter defrost
OFF
Normal
ON
Defrosting extended for 60 seconds
SW5-2
Quit defrost OFF
*
Normal
Detailed reference manual instructions
SW3
Wifi setting(reserve)
P
P
R
R
E
E
S
S
S
S
Check the system parameters
CHECK
s 1s 1
PRESS
Test mode(Not used)
6s
Forced cooling/heating
PRESS
FORCE
(Charge mode)
1s
PRESS
Forced defrosting
6s
Figure 60
Bosch IDS BOVA15 Split System Heat Pump - BTC 761701317 A (02.2022)
CN32
DSP1
W2
V2 U2
SW3
SW2
IPM
IPM
CHECK
GR/W
W
BR/V
SW4
SW5
V
ON
ON
U
BK/U
1 2 3 4
1 2
SW6
ON
1 2
Main Board
PFC
PFC
CN1 L1
CN2 L2
Y/G
GND1
GND2
ORANGE
Y/G
Y/G
*
*The factory Default
*
ON
ON
*
*
OFF
OFF
ON
For 24K model
OFF
ON
For 36K model
OFF
SW6
ON
Set capacity
For 48K model
OFF
ON
For 60K model
OFF
CN25
HPS
CN10
SW1
CN21
FORCE
CN11
T5
CN14
PT
CN16
BLACK
T3
WHITE
CN7
T4
BLUE
T3L
CN20
Th/T6
CN13
EEV
CN9
CN12
RV
RV
C B Y W
C B Y W
To thermostat
Note:
PEV
1.B terminal to be connected with
themostat(O/B) wiring heat pump
heating operating,energized for heating.
CCH
2.EEV、RV for HP system.
3.B、W signal for HP system.
High pressure switch
ON
HPS
T5
Comp. discharge temp. sensor
OFF
PT
Pressure transducer
T3
Condensor temp. sensor
T4
Ambient temp. sensor
T3L
Condensor outlet temp. sensor
Th/T6
Comp. return temp. sensor
EEV
Electric expansive valve
RV
Reversing valve
PEV
Pressure equalizer valve
CCH
Crankcase heater
COMP.
Compressor
TEMP.
Temprature
Installation Instructions
WARNING
ELECTRIC HAZARD 380 VOLTS DC
WAIT 3 MINUTES AFTER DISCONNECTING POWER,THEN
VERIFY DC VOLTAGE LESS THAN 42 VDC AT INVERTER
TEST POINTS P-N. COMPONENTS MAY STORE A
DANGEROUS ELECTRICAL POTENTIAL OF 380 VOLTS DC.
FAILURE TO FOLLOW THIS WARNING COULD RESULT
IN PERSONAL INJURY OR DEATH
CODE
Fault description
C3
The coil sensor is seated fault in cooling(T3)
E4
Temprature sensor fault (T3,T4,T5,T3L,TF)
E5
High/Low voltage protection
E6
DC fan motor fault
E7
Compressor discharge sensor is seated fault (T5)
E9
EEPROM fault
F1
High pressure switch fault (HPS)
H0
Communication fault in main control chip
H5
5 times (P2) protection in 100 minutes, lockup
H8
Pressure transducer fault (PT)
L0-L9
The IPM module protection(only for analysis)
P0
HighControl board temperature protection (TF)
P1
High pressure(HPS) protection
P2
Low pressure protection in cooling or heating (PT)
P3
Compressor over current protection
P4
High T5 protection
P5
Condensor coil temperature protection in cooling (T3)
P8
DC fan motor hurricane/typhoon protection
PH
Low discharge superheat protection
AtL
Ambient Temperature Limited T4 (heat pump)
CODE
Description
Forced operation mode
┣
L
Running indication under T3 limited condition
D
Running indication under T5 limited condition
P
Compression ratio protection limit
F
Running indication under TF limited condition
C
Running indication under current limited condition
U
Running indication under low voltage limited condition
A
Running indication under return oil model
dF
Running indication under defrost model
Mumber
Point check content
0
Outdoor unit capacity,example:H3=Heat pump 3 ton
1
Outdoor unit mode:0-standby,2-cooling,3-heating
2
Outdoor unit set compressor speed(Hz)
3
T3:outdoor coil temp.(°F)
4
T4:outdoor ambient temp.(°F)
5
T5:compressor discharge temp.(°F)
6
Reserve
7
T3L:(liquid line temp.)(°F)
8
Tf:module temp.(°F)
9
Pe:evaporating pressure(PSI)
10
Pc:condensing pressure(PSI)
11
Tes target evaporating te
mp
.(only for cooling mode)(
12
Te:evaporating temp.
°F
(
)
13
Tcs target condensing temp(only for heating mode)(
14
Tc:condensing temp.(°F)
Target of the compressor discharge superheat
15
(heating mode only):Target value (°F)
16
Compressor diacharge superheat
(
°F
)
17
Opening of EEV
18
Outdoor fan speed
19
Compressor current(A)
20
Power AC voltage Input(V)
21
Compressor input dc voltage (V)
22
Continuous running time of the compressor(min)
23
Last fault code
24
Software version
25
Remark"--"
°F
)
°F
)
| 39
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