SM-18003
3-3
TROUBLESHOOTING
● For Outdoor Unit
Refer to the Service Manual for Outdoor Unit.
● For Indoor Units
Select wiring capacity according to Table 3.1 below. This equipment can be installed with a Ground Fault
Circuit Interrupter (GFCI), which is a recognized measure for added protection to a properly grounded unit.
Install appropriate sized breakers / fuses / overcurrent protection switches, and wiring in accordance with
local, state and NEC codes and requirements. The equipment installer is responsible for understanding and
abiding by applicable codes and requirements.
Heat Pump System Heat Recovery System
The electrical wiring capacity of the outdoor unit is according to the “Installation and Maintenance Manual”
of the outdoor unit. Setting DIP switches may be required depending on the combinations with the outdoor
unit.
Outdoor
Unit
Indoor
Unit
Switchbox
Outdoor Unit
Power Supply
Indoor Unit
Power Supply
Indoor
Unit
Indoor
Unit
GFCI
Main
Switch
GFCI
Main
Switch
Refer to the “Installation and Maintenance Manual”
for the connected outdoor unit for details of wire,
GFCI and main switch for outdoor unit.
Outdoor
Unit
Change-Over
Box
Indoor
Unit
Switchbox
Indoor
Unit
Indoor
Unit
GFCI
Main
Switch
GFCI
Main
Switch
Refer to the “Installation and Maintenance Manual”
for the connected outdoor unit for details of wire,
GFCI and main switch for outdoor unit.
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