Whirlpool WUW35X15DS, Руководство по обслуживанию, Страница: 18 / 42

For Service Technician Use Only
DIAGNOSTICS (Cont.)
2-4
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Wine Center
Diagnostics
NOTES:
Ƀ
Engineering Model Numbers with R134a gas - Follow normal
sealed system purging, capturing, brazing, and charging
procedures for models: WUW35X15DS01, WUW35X24DS01,
WUW55X15DS01, WUW55X24DS01, WUW55X15HS00, and
WUW55X24HS00.
Ƀ Engineering Model Numbers with R600a gas (new
compressor and PCB) - Follow R600a sealed system purging,
capturing, lokring, and charging procedures outlined in
Service Manual W11105483 for models: WUW35X15DS02,
WUW35X24DS02, WUW55X15HS01, and WUW55X24HS01.
The Display Does Not Work:
1. Is the power supply cord unplugged? Check if the
refrigerator cabinet lights illuminate. It is a simple way
to check the power supply. If lights in the cabinet are not
illuminating, check the power supply (power cord, plug,
socket).
2.
If the display still not receiving power input, check the Main
PCB circuit.
3. If there is the power to the display and does not work, the
control panel has failed.
The Inner Temperature Is Not Rising Correctly:
1. Is the inner temperature lower than the set temperature
range after the Wine Center operated for 1 hour? Check the
PTC heater with the multimeter, if it works normally.
2.
If any PTC heater is still not receiving power input, then check
the Main PCB circuit and its wiring.
The Compressor Is Not Working Properly:
1.
If the Wine Center not cooling, check the current with the
Ampere meter. Refer to the rating label for the recommended
value.
2. If the amp rating is too high, check the compressor winding.
3.
If the amp rating is too low, then check for the refrigerant
leak, inefficient compressor or restriction in the sealed
system.
NOTE: Wine Center takes approximate 3 hours to reach to the
lowest set temperature of 5°C (41°F) for an empty unit.
The Compressor Is Creating Noise:
• If the noise of the compressor is not steady or very high, then
the compressor is faulty. Repair or replace the compressor.
• If the shock absorption rubber of the compressor has become
hard or damaged, then replace the shock absorption rubber.
• If the fixing screws of the compressor is too tight or loose, it
will cause noise, then replace the screws.
The Evaporator Fan Is Creating Noise:
1. If the noise of the evaporator fan is extremely high and
abnormal, replace the faulty fan.
Refrigerant Flow Noise Is Louder Than Normal:
1. The end of the capillary is in the wrong position, or there are
rough edges on the end of the capillary.
Repair the capillary to evaporator joint using the proper
method depending on gas type.
2.
Reposition the capillary tube into the correct position [not
exceeding 0.6" (15 mm) in the evaporator] and pack the joint
with anti-vibration compound.
3. Recharge the sealed system with the proper refrigerant.
Capillary Vibration Noise:
1. The capillary is in the wrong position, and may be rubbing on
the cabinet.
2.
Reposition the capillary tube in the Machine compartment or
behind the evaporator cover.
3. If the capillary touches the inner cabinet and the air duct
panel, then adjust the position of the capillary and add anti-
vibration compound.
Noise in Sealed System Because Oil Is Jammed:
1. If intermittent and deep jet noise coming from inside of the
capillary, then clean the cooling system pipe, vacuumize it
and recharge it with the refrigerant.
The Evaporator Is Not Defrosting:
1. If the door is left open or not sealing properly, then replace
the door seal or close the door correctly.
2.
If the door seal is not air-proof, then seal it with the heat
dryer. Then move up and down until it comes back to the
normal state.
3. When it becomes cool, check it with the closed door.
4.
If there is any distortion, dry it again until it fixes for the door.
5. If the fan is broken, replace the fan.
6.
If the Wine Center is still not cooling, verify the sealed system
is working properly and replace any necessary parts.
Unstable Temperatures Inside The Cabinet:
1.
If the fan is not running with the running compressor, then
check the fan connections and verify there is correct voltage
to the fan.
2. If the fan is broken, replace it with the same model.
3.
When the door opens, the fan of the evaporator pauses.
The Machine Is Not Cooling/Compressor Is Off:
1.
Is the power supply cord unplugged? Check if the
refrigerator cabinet lights illuminate. It is a simple way
to check the power supply. If lights in the cabinet are not
illuminating, check the power supply (power cord, plug,
socket).
2. Check the error codes on the display (refer to the page).
3.
If error codes are not displaying, check the power input of
the starter. The starter is failed if it is not receiving power
input.
4. If the starter is not receiving power input, check the power
input of the protector. The protector is failed if it is not
receiving power input.
The Lower Compartment Not Cooling:
1. Is the lower compartment fan running normally? If the fan
is not running normally, then check the fan connections and
verify there is correct voltage to the fan. If those are good,
replace the lower compartment fan.