Haier AW09TE1VHA, Service Manual

Page: 52 / 79

ERROR CODES & PROBLEM SOLVING PAGE 52
ENGLISH
Checking System Components
Checking Outdoor Unit Components
Checking the DC Fan Motor
Red Test Lead
Black
Test
Lead
Red --- Black White Yellow Blue
Red --- 3.10 Meg 3.05 Meg 3.28 Meg Charges to
--- --- --- --- ---
Black 43.85K 145.1K Charges to
White 189.0K Charges to
Yellow Charges to
Blue
Checking the EEV Stepper Motor
White Yellow Orange Blue Red Grey
White --- 92.6Ohm --- 47.0 Ohm ---
Yellow --- 93.1 Ohm --- 47.0 Ohm
Orange 46.5 Ohm ---
Blue 46.8 Ohm
Red ---
Grey
Checking the PFC Reactor
Checking the Outdoor Unit Sensors
Checking the Reversing Valve Coil
NOTE: Component resistance readings shown in this section
#+ " }
based on model being tested.
Testing of the following components requires the use of an
ohmmeter and temperature probe. (Temperature probe is
used during sensor testing only).
NOTE: When using the test probes, probe the back or side
contacts of the plug to obtain the reading. Do not try to
probe the connector end of the plug as this may damage the
contacts of the plug.
NOTE: Use respective temperature / sensor chart for sensor
type being tested.
Compressor discharge sensor
Suction sensor
Tube sensor (defrost temperature)
Ambient sensor
Step 1
Disconnect the sensor plug from the control board for this
test. Failure to do so may provide inaccurate readings.
Step 2
Using a temperature probe, determine the temperature of
the sensor being tested.
Step 3
Using an ohmmeter, check the resistance value of the sensor.
Step 4
Referring to the temperature / resistance table for the sensor
being checked, verify the resistance value corresponds to the
temperature checked in step 2.
Replace the sensor if the reading is open, shorted, or outside
|! #
Step 5
Re-seat the plug on the connector at the conclusion of the
test.
Step 1
Disconnect the reversing valve plug from the control
board connector for this test. Failure to do so may provide
inaccurate readings.
Step 2
Using an ohmmeter, check the resistance value of the coil.
The resistance value of the coil is 2.08K Ohms. Replace
the valve coil if the reading is open, shorted, or a value
| }G#Z[¢#
Step 3
Re-seat the plug on the connector at the conclusion of the
test.
Step 1
Disconnect the DC Fan Motor plug from the control board
connector for this test. Failure to do so may provide
inaccurate readings.
Step 2
Refer to the chart shown below for plug pin combinations and
resistance values.
Note: Test is polarity sensitive, adhere to probe placement as
shown in chart.
Step 3
Re-seat the plug on the connector at the conclusion of the
test.
Step 1
Disconnect the EEV Stepper Motor plug from the control
board connector for this test. Failure to do so may provide
inaccurate readings.
Step 2
Refer to the chart shown below for plug pin combinations and
resistance values.
Step 3
Re-seat the plug on the connector at the conclusion of the
test.
Step 1
Disconnect wires from terminals LI and LO of the power
module board.
Step 2
Using an Ohmmeter, check the resistance value of the PFC
Reactor. The resistance value of the coil is less than 1 Ohm.
" }" $"