Haier GE NS23AM Service Manual page 77

Unit Sensor Operation, Checkout and Status /Error Codes
Operation:
6-Pin Sensor Harness (DIS, AMB, COIL)
There is no sensor located on positions 5 and 6 of the connector. A 10K Ohm resistor installed between pins 5 and 6 on the
cable harness provides continuity for this circuit.
Ambient temperatures, as read by the ambient temperature sensor connected to pin 3 and pin 4, which are below -35°F
(-37°C) or above 120°F (48°C) trigger a fault condition. If the ambient sensor is open, shorted, or out of the temperature
range of the sensor, the control displays the appropriate alert code. Heating and cooling operation is allowed in this fault
condition
There is no sensor located on position 1 to position 2 of the connector. A 10K ohm resistor is installed between pins 1 and
2 on the cable harness and provides continuity for this circuit.
4-Pin Suction Temperature Sensor / Liquid Temperature Sensor Harness
Suction line temperature is read by the suction line temperature sensor between Pins 1 and Pin 2 of the 4-pin sensor
harness. Nominal Resistance of the sensor is 10K ohms at 77F. The control will display are E182 error code if the sensor
reads open or shorted for 24 hours. Cooling operation is allowed with this fault.
Liquid line temperature is read by the liquid line temperature sensor between Pins 3 and Pin 4 of the 4-pin sensor harness.
Nominal Resistance of the sensor is 10K ohms at 77F. The control will display are E184 error code if the sensor reads open
or shorted for 24 hours. Cooling operation is allowed with this fault.
SENSOR
NONE
OUTDOOR
AMBIENT
NONE
OUTDOOR
AMBIENT
Checkout:
Through the sensors, the control detects outdoor ambient, coil and liquid temperature fault conditions. As the detected
temperature changes, the resistance across the sensor changes. Check sensor operation by reading ohms across pins
shown in Figure 47.
31-5000746 Rev. 0
Discharge Sensor (R7 - No Sensor)
Ambient Temperature Sensor (RT13)
Coil Temperature Sensor (R7 - No Sensor)
Suction Line Sensor (RT41)
Liquid Line Temperature Sensor (RT36)
RESISTANCE VALUES
TEMP RANGE ºF
RANGE (OHMS)
(ºC)
N/A
10K Ohms Nominal
336,000 to 2,487 (see table
-40 (-40) TO
16 on page 74 for exact
140 (60)
temperature to ohm readings)
N/A
BLACK WIRES WITH
BLACK SLEEVE
Figure 46.
Page 77
PIN# / WIRE
SLEEVE COLOR
6 AND 5
4 AND 3
(BLACK)
N/A
2 AND 1
10K OHM RESISTOR
10K OHM RESISTOR
TEMPERATURE
SENSOR HARNESS