950-0139
7/21/2009
- 9 -
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Ground connection must be made to the terminal plate.
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For easier access to the terminals in the outdoor unit remove the lower
access panel to install whip and seal-tite connectors for conduit.
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Access to outdoor terminal strip will vary by model.
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Control wiring from the outdoor unit must be a point to point i.e. the
terminal that the wire is attached to on the outdoor unit must be the same
terminal it is wired to in on the Indoor unit.
THIS IS EXTREMELY IMPORTANT:
Miswiring (cross connecting wires)
between the indoor unit and outdoor unit can cause the unit to fail to operate and
can seriously damage the unit. Use care to ensure that wiring between the inside
unit and the outside unit is per the wiring diagram. Ground connection should be
made to ground screw marked in the indoor unit.
If the unit is a MSC49HP13115A, 9H43YGX, MSC412HP13115A or 12H43YGX,
the defrost sensor must be connected from the indoor unit to the outdoor unit.
If a longer length than supplied is required then cut the lead and extend using
thermostat wire. If this cable is not installed the unit will not operate in heat mode.
Typical condenser wiring
