Haier DW-86L486, Руководство по послепродажному обслуживанию

Страница: 32 / 42

-------Internal training document for Haier service provider. External disclosure is prohibited --- Classification
31
31
well (check if there is a leakage), and also troubleshoot.
3. Fan
failures
1. The patch cord of the fan falls.
Check if the patch cord of the fan falls or not connected. If
so, rework the thread residue and wire connection.
2. The fan blade is blocked by
foreign matters.
Check if any fan blade collides the wall, makes noise and
not equipped when it rotates, troubleshoot the blade and
remove surrounding foreign matters and keep the blades
running normally.
3. Fan damage
Use the multi-meter to measure the resistance at each
end of the circuit of the fan and check if the spindle rotates
properly. If so, replace the fan.
4. High
temperature
in the
compartmen
t
1. The temperature set at the
shutdown point is high. Check if the product temperature set point meets the
demand of the customer. If not, reset the temperature.
2. Refrigerant leakage
Check all welds, find leakages in the entire compartment
and repair the welds. Then, refill refrigerant.
3. Temperature probe damage
If an abnormal code alarm displays on the display panel,
e.g. E0/E1/E2/E3, it means the temperature probe of the
product has a failure. Meanwhile, check if patch cords are
connected well. If so, it means the temperature detection
wire is damaged and shall be changed.
4. The capillary or system is dirty
and blocked by grease.
Open the system, clean the capillary or replace the filter.
5. High ambient temperature
If the ambient temperature is high, please install an
air-conditioner to reduce the ambient temperature.
6. Condenser blockage
Check if the condenser is dirty and alarms. If so, please
clean the filter screen in time.
5. E0
ALARM
When the input voltage of the
ambient temperature sensor is
≥4.9V, the sensor has an open
circuit; when
≤0.1V, it has a
short circuit.
1. Check if the terminal of the ambient temperature
sensor is plugged in improperly or falls, and if the
sensor is damaged.
2. Check if plug-in terminals of the sensor on the display
panel are loose or contact poorly; and check if the
display panel is damaged.
6. E1 alarm
When the input voltage of the
condenser sensor is
≥4.9V, the
sensor has an open circuit; when
≤0.1V, it has a short circuit.
1. Check terminals of the ambient temperature sensor
are plugged in improperly or fall; check if the sensor is
damaged.
2. Check if plug-in terminals of the sensor on the display
panel are loose or contact poorly; and check if the
display panel is damaged.
7. E2 alarm
When the input voltage of the
main sensor is ≥4.9V, the sensor
has an open circuit; when ≤0.1V,
it has a short circuit.
1. Check terminals of the main sensor are plugged in
improperly or fall; check if the sensor is damaged.
2. Check if plug-in terminals of the sensor on the main
control panel are loose or contact poorly; and check if
the main control panel is damaged.
8. E3 alarm
When the input voltage of the
heat exchanger is ≥4.9V, the
sensor has an open circuit; when
≤0.1V, it has a short circuit.
1. Check terminals of the heat exchanger sensor are
plugged in improperly or fall; check if the sensor is
damaged.
2. Check if plug-in terminals of the sensor on the display
panel are loose or contact poorly; and check if the
display panel is damaged.