Unit Operation - Haier GE NS23AM Service Manual

7-Segment Display and Push Button
Information labels concerning the outdoor control 7-segment display and push button operations are available on the unit
control panel cover.
Alarms
Alarm information is provided on the unit control panel cover.
Charge Mode Jumper
To initiate the NS23AM Charge Mode function, install the jumper across the two Charge Mode Pins (CHRG MODE) on the
outdoor control. The Charge Mode can be used when charging the system with refrigerant, checking the refrigerant charge,
pumping down the system and performing other service procedures that requires outdoor unit operation at 100% capacity.
NS23AM Charge Mode Operation with a Conventional 24VAC Thermostat
On applications with a conventional 24VAC thermostat, the charge mode jumper must be installed on the Charge Mode
Pins after providing a Y1 cooling demand to the NS23AM to initiate the Charge Mode. A cooling blower demand must also
be provided to initiate blower operation on the cooling speed on the indoor unit. The compressor and outdoor fan motor will
operate at 100% capacity. To exit the charging mode, remove the Charge Mode Jumper and remove the Y1 Cooling demand
and indoor blower demand. The Charge Mode has a maximum time of 60 minutes and will automatically exit the charge
mode after 60 minutes is the charge mode jumper is left in place.
Operation Mode Jumper
The Operation Mode Jumper is only used on applications installed with a conventional 24VAC thermostat. In applications
with a conventional 24VAC thermostat, the compressor capacity is controlled to maintain the target suction pressure setpoint.
Pins 1 & 2), Normal Mode (Jumper installed on Pins 2 & 3) and Comfort Mode (Jumper Removed). The factory default
temperature; as the outdoor temperature increases the suction pressure setpoint will decrease. When the Operation Mode
jumper is installed in the "Normal Mode" the suction pressure setpoint is 135 psig. When the Operation Mode jumper is
installed in the "Comfort Mode" the suction pressure setpoint is 125 psig.

Unit Operation

NS23AM Unit Operation with a Conventional
24VAC 2-Stage Thermostat
When the NS23AM unit is installed with a conventional
blower operation. The compressor will be controlled in
the variable capacity mode by varying the compressor
capacity to obtain the target suction pressure set point.
The Y2 second stage cooling demand will initiate second
stage blower operation. Increased air volume will increase
the load on the indoor coil and increase the suction
pressure. The NS23AM compressor capacity will continue
to be controlled based upon the suction pressure. The unit
capacity will be controlled in the variable capacity mode
throughout the range of capacity from minimum capacity
to maximum capacity. If the Y2 demand remains after 20
minutes, the NS23AM control will begin to ramp up the
compressor capacity until maximum capacity is achieved.
The NS23AM
NS23AM Unit Operation with a Conventional
24VAC Single-Stage Thermostat
When the NS23AM unit is installed with a conventional
demand will initiate cooling operation and cooling indoor
blower operation. In single stage thermostat applications,
a jumper must be installed between Y1 and Y2 on
the NS23AM outdoor control. The compressor will be
controlled in the variable capacity mode by varying the
compressor capacity to obtain the target suction pressure
set point. If the cooling demand remains after 20 minutes,
the NS23AM control will begin to ramp up the compressor
capacity until maximum capacity is achieved. The NS23AM
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