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Installation Instructions
Bosch 15 SEER2 Inverter Ducted Packaged Heat Pump - BTC 761701319 A (12.2022)
13.14 Wiring Diagram
Figure 57
CHECK FORCE
CN8
CN13
CN8
CN35
1 PSD
OUTDOOR FAN MOTOR
COMP.
RV
CCH
GREEN
LED4
CN3
T2
T1
INDOOR FAN MOTOR
OUTDOOR
MAIN BOARD
INDOOR
MAIN BOARD
SW4 SW5
U
V
W
Y/G
Power in
CY1Y2RBGDh W2 W1
TRANSFORMER
24V
240V
COM
208V
5 4 3 2 1
N L C
RED
RED
BROWN
BLACK
GRAY
BLACK
RED
BLACK
*
SW6
ON
OFF
XT1
L1
L2
Y/G
U
9
W
IPM
W
V
U
PFC
CN32
W2 V2 U2
CN7
CN13
HPS
T5
PT
T3
T4
T3L
EEV
CN14
CN16
BLACK
WHITE
BLUE
CN9
CN12
CN1
CN2
To thermostat
NOTE:When using two-stage
thermostat,remove this wire.
Use copper conductors only
NOTE:If the input voltage
is 208V,take the red wire
to 208V terminal.
TO HEATER KIT
ON
3
4
5
Indoor Board LED Code
Anti-cold air function active
Temperature sensor fault(T1)
Temperature sensor fault(T2)
Dehumidification mode active
1
Normal
5
4
3
1
2
SPEED TAPS
MEDIUM LOW
LOW
MEDIUM
MEDIUM HIGH
HIGH
1 2 3 4 5
N G L C
Y
/
G
Y/G
BROWN
PURPLE
YELLOW
BLUE
ORANGE
RED
243
1
ON
2
1
ON
243
1
ON
Y/G
CN33
CN30
BLACK
RED
RED
SW6
243
1
ON
CN37
CN20
Th
Y/G
BLACK
GND1
GND2
BLACK
RED
BLACK
YELLOW
YELLOW
6
Communication error
*
SW5
ON
OFF
*The factory Default (Outdoor unit)
*
SW4
ON
OFF
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.
WARNING
ELECTRIC HAZARD 380V VOLTS DC
HPS High pressure switch
T5 Comp. discharge temp. sensor
PT Pressure transducer
T3 Condensor temp. sensor
T4 Ambient temp. sensor
T3L Condensor outlet temp. sensor
TF
Control board module temperature
Th Comp. return temp. sensor
EEV Electric expansive valve
RV Reversing valve
CCH Crankcase heater
COMP. Compressor
TEMP. Temperature
SW5-1
Enter defrost
SW5-2
Quit defrost
OFF
ON
OFF
ON
Normal
Operating time is reduced by 10%
SW4-2
SW4-3
SW4-4
OFF
ON
Normally cooling/heating
Accelerated cooling/heating
Adaptive capacity output disable
SW4-1
Defrosting
extended for 60 seconds
Normal
ON
OFF
*
*
*
*
*
*
Adaptive capacity output enable
OFF
ON
OFF
ON
For IDS
Unused
Must be set at OFF position
Must be set at ON position. For IDP
Number 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 Th:compressor suction temp.(°F)
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 temp.(only for cooling mode)(°F)
12 Te:evaporating temp.(°F)
13
Tcs:target condensing temp(only for heating mode)(°F)
14 Tc:condensing temp.(°F)
15
Target of the compressor discharge superheat
(heating mode only):Target value (°F)
16 Compressor discharge superheat
(°F)
17
Opening of EEV:Actual value
18 Outdoor fan speed
19 Compressor current(A)
20 Power AC voltage Input(V)
21 DC voltage(V)
22 Continuous running time of the compressor(min)
23 Last fault code
24 Software version
25
Remark"--"
CODE Fault description
E4 Temperature sensor fault(T3,T4,T5,Th,T3L)
F1 High pressure switch(HPS) fault
H8 Pressure transducer fault (PT)
E6 DC fan motor fault
P8 DC fan motor hurricane/typhoon protection
E5 High/Low voltage protection
E9 EEPROM fault
H0 Communication fault in main control chip
P6 IPM module protection
L0-L9 The IPM module protection(only for analysis)
C3 The coil sensor is seated fault in cooling(T3)
E7 Compressor discharge sensor is seated fault (T5)
PH Low discharge superheat protection
P1 High pressure protection (HPS)
P5
Condensor coil temperature protection in cooling (T3)
P4 High T5 protection
P0 High module temperature protection(TF)
P3 Compressor over current protection
P2 Low pressure protection in cooling or heating (PT)
H5 5 times (P2) protection in 100 minutes, lockup
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
2
1
ON
243
1
ON
26
27
28
29
T1:Return air temp.(°F)
T2:Indoor coil temp.(°F)
Ts:Assume thermostat set point temp.(°F)
Indoor fan speed
Return air temp. sensor
Indoor coil temp. sensor
T1
T2
L1
L2
2
Evap freeze protection active
RECTIFIER
CN12
BLACK
WHITE
SW6-4
OFF
ON
TWO STAGE FAN CONTROL
AUTO FAN CONTROL
SW6-3
HEAT:ANTI-COLD AIR FAN DELAY
HEAT:FAN DELAY START
SW6-1,2
SW6-4 ON
1
2
3
4
5
SW6-4 OFF
Speed Taps
(Indoor unit)
ON
OFF
*The factory Default (Indoor unit)
*
*
2
1
ON
2
1
ON
2
1
ON
2
1
ON
1
2
2
2
1
3
2
2
1
4
3
3
2
5
4
HMHM LHMHM L
1
1
2
3
*
*
SW3
SW2 SW1
CN11
CN10
CN25
For 48K model
For 60K model
For 24K model
For 36K model
ON
12
ON
OFF
ON
12
ON
OFF
ON
12
ON
OFF
ON
12
ON
OFF
Set capacity
(Outdoor unit)
SW6
SW6
2
1
ON
CN18
SW6
ON
OFF
2
1
ON
FORCE
PRESS
6s
PRESS
1s
SS
PRESSPRE
1s1s
PRESS
6s
CHECK
SW3
Wifi setting (Reserve)
Check the system parameters
Test mode (Not used)
Forced cooling/heating
(Charge mode)
Forced defrosting
CN21
XT2
PC Evaporator freezing protection
CODE Description
E1 Communication error
CN17
16027700002615
Factory code
RevisionDate
Nov. 26th,2022 C
NOTE:
: Factory optional
: Field installed
Note: This manual is for reference only, actual
product may vary.
Outdoor Board LED Code
ON Compressor running.
fl ashing 2s ON then 2s OFF, Compressor is standby.
fl ashing Flashing then 3s OFF. Compressor error will show on digital display tube.
fl ashing Flashing quickly 400ms/cycle. Compressor chip communication error.
Table 38
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