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Service Manual
3-3
TROUBLESHOOTING
Example for Electrical Wiring Connection
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Heat Recovery System)
TB1
GFCI
Main Switch
Main Switch
Main Switch
TB1
TB2
1
2
3 4
TB2
1
2 3
4
TB1
1
2
A
B
TB2
1
2
A
B
TB2
TB1
N
No. 0
Indoor Unit
No. 1
Indoor Unit
Distribution Box or Pull Box
Distribution Box or Pull Box
GFCI
GFCI
GFCI
GFCI
GFCI
S
S
S
Outdoor Unit A (Main)
Ground
Ground
Outdoor Unit B (Sub)
Controller
Cable
Controller
Cable
Wired
Controller
Wired
Controller
No. 0 System Indoor Units
No.1 System Indoor Units
1
208/230V 60Hz
TB : Terminal
Block
PCB : Printed Circuit Board
:
Field
Wiring
:
Communication
Line
DC5V (Non-Pole Communication H-LINK System)
: Field-Supplied
: Optional Accessory
3
208/230V 60Hz
460V 60Hz
3
208/230V 60Hz
460V 60Hz
L1 L2 L3
L1 L2
L1 L2
N
L1 L2
L3
TB1
Main Switch
Main Switch
Main Switch
TB1
TB2
L1 L2 L3
1
2
3 4
TB2
1
2 3
4
TB1
L1 L2 L3
1
2
A
B
TB2
1
2
A
B
TB2
TB1
L1 L2 N
L1 L2 N
L1 L2 N
L1 L2 N
L1 L2 N
No. 0
Indoor Unit
No. 1
Indoor Unit
Distribution Box or Pull Box
Distribution Box or Pull Box
Distribution Box or Pull Box
Distribution Box or Pull Box
Outdoor Unit A (Main)
Ground
Ground
Outdoor Unit B (Sub)
Controller
Cable
TB1
1
2
A
B
TB2
No. 2
Indoor Unit
TB1
1
2
A
B
TB2
No. 3
Indoor Unit
TB1
1
2
A
B
TB2
No. 4
Indoor Unit
Wired
Controller
Controller
Cable
Wired
Controller
Controller
Cable
Wired
Controller
Controller
Cable
Wired
Controller
Controller
Cable
Wired
Controller
Indoor Unit Group
For Cooling Operation Only
1
2
L1
3 4
Change-Over Box 1
TB2
TB1
1
2
3 4
Change-Over Box 2
TB2
TB1
1
2
3 4
Change-Over Box 3
TB2
TB1
1
208/230V 60Hz
TB : Terminal
Block
PCB : Printed Circuit Board
:
Field
Wiring
:
Communication
Line
DC5V (Non-Pole Communication H-LINK System)
: Field-Supplied
: Optional Accessory
L
2
N
L1
L
2
N
L1
L
2
N
S
S
S
3
208/230V 60Hz
460V 60Hz
3
208/230V 60Hz
460V 60Hz
GFCI
GFCI
GFCI
GFCI
GFCI
GFCI
Summary of Contents for YVAHP072B31S
Page 2: ......
Page 10: ...viii Service Manual ...
Page 16: ......
Page 17: ...Service Manual 1 1 INSTALLATION 1 Installation ...
Page 577: ...Service Manual 1 561 INSTALLATION 9 Touch Back to return to the Service Menu screen 9 ...
Page 920: ......
Page 921: ...Service Manual 2 1 OPERATION 2 Operation ...
Page 1315: ...Service Manual 3 1 TROUBLESHOOTING 3 Troubleshooting ...
Page 1461: ...Service Manual 4 1 MAINTENANCE 4 Maintenance ...
Page 1728: ......
Page 1729: ...Service Manual 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions ...
Page 1738: ...6 10 Service Manual FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A ft 3 l b ...
Page 1739: ...SERVICE PARTS LIST Service Manual 7 1 7 Service Parts List ...
Page 1795: ......
Page 1796: ... 2015 Johnson Controls Inc SM 15001 ...