Domestic Dishwasher
SERVICE MANUAL
Models
HEC12EFM
HEC12EFMS
z Features
z Overflow Protection Function
z Super-Capacity for 12 settings
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Contents
1. Features………………………………………………… ……………………………….…3
2. Safety Precaution………………………………………… ……………………….………4
3. Net Dimension……………………………………………………………………………...5
4. Installation and Accessory Parts…………………… …………………………………. ..5
5. Parts and Functions………………………………… ………….. ………………...…... ..7
6. Program Diagram…………………………………………………………………………..10
7. Maintenances Service and Trouble Shooting……… …………………………………. 11
8. Circuit Diagram……………………………… ………………………………….…...…. . 17
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1. Features
1.1 Overflow Protection Function
1.2 Super-Capacity for 12 settings
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2. Safety Precaution
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3.Net dimension
4.Installation and Accessory Parts
4.1 Positioning the Appliance
Position the appliance in the desired location. The back should rest against the wall behind it, and the
sides, along the adjacent cabinets or wall. The dishwasher is equipped with water supply and drain hoses
that can be positioned on the right or the left to facilitate proper installation.
4.2 Leveling the Appliance
Once the appliance is positioned, adjust the feet (screw them in or out) to level the dishwasher. In any
case, the appliance should not be inclined more than
2º. If the appliance is level, it will help ensure proper
performance.
4.3 Cold Water Connection
Connect the cold water supply hose to a threaded 3/4(gas) connector and make sure that it is fastened
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tightly in place (see Fig 1).
If the water pipes are new or have not been used for an extended period of time, let the water run to make
sure that the water is clear and free of impurities .If this precaution is not
taken, there is a risk that the
water inlet can get blocked and damage the appliance.
4.4 Hot Water Connection
The water supply to the appliance can also be connected to the house's hot water line (centralised
system,heating system),as long as it does not exceed a temperature of 60
℃.
In this case,the wash cycle time will be shortened by about 15 minutes and the wash efficiency slightly
reduced.
The connection must be made to the hot water line following the same procedures as those for the
connection to the cold water line.
4.5 Drain Hose Connection
Insert the drain hose into a drain pipe with a minimum diameter of 4cm,or let it run into the sink, making
sure to avoid bending or crimping it. Use the special plastic support that comes with the appliance (see
Fig.2). The free end of the hose must be at a height between 40 and 100 cm and must not be immersed in
wate
r.
4.6 Electrical Connection
After making sure that the voltage and frequency values for the current in the home correspond to those
on the rating plate (located on the stainless steel inner doo r of the appliance ) and that the electrical sy stem is
correct for the maximum voltage on the rating plate, insert the plug into an electrical socket which is earthed
properly (the earthing of the appliance is a safety requirement mandated by law).
If the electrical socket to which the appliance must be connected is not appropriate for the plug, replace the
plug rather than using adpators or the like as they could cause overheating and burns.
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5.Parts and Functions
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Detergent
Detergent specifically intended for use with dishwashers must be used.The dispenser must be refilled before the
start of each wash cycle following the instructions provided in the "Wash Cycle Table." The detergent dispenser is
located on the inside panel the door.
Loading the detergent
To open the "A" cover on the dispenser,press the "B" button.The detergent for the wash cycle should be poured into
the "C" compartment.
After the detergent has been placed in the dispenser, close the cover and press down until it clicks in place.
Notice:To facilitate closing the cover, remove any excess detergent on the edges of the dispenser.
Rinse Aid
This product makes dishes sparkle and helps them to dry without
spotting.The dispenser is located on the inside panel of the door and
should be filled after every 80 wash cycle (or when the rinse aid indicator
light comes on for those models with this feature).
Loading The Rinse Aid
To open the dispenser,turn the "C" cap in the anti-clockwise dierction
and then pour in the rinse aid,making sure not to overfill.The amount of
rinse aid used for each cycle can be regulated by turning the "F" dose
adjustor ,located beneath the "C" cap, with a screwdriver.There are 6
different settings; the normal dosage setting is 3.
Important
Proper dosage of the rinse aid improves drying.
If drops of water remain on the dishes or spotting occurs,the dosage adjustor should be turned
to a higher setting.
If the dishes have white streaks,turn the dosage adjustor to a lower setting.
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Before placing the dishes in the dishwasher, remove larger food particles to prevent the filter from
becoming clogged, which results in reduced performance. If the pots and pans have baked-on food that is
extremely hard to remove, we recommend that they are soaked before washed. This will eliminate the
need for extra wash cycles.
Pull out the rack to load the dishwasher.
How to use the lower rack
We recommend that you place the most
difficult to clean items on the bottom rack: pots,
pans, lids, serving dishes and bowls, as
shown in the figure to the right. It is preferable
to place serving dishes and lids on the sides of
the racks in order to avoid blocking the
rotation of the top spray arm.
- Pots, serving bowls, etc. must always be
placed face down.
- Deep pots should be slanted to allow the
water to flow out.
- The silverware basket can not be doubled
(see fig.A).
How to use the upper rack
The upper rack is designed to hold more
delicate and lighter
dishware, such as glasses, cups and saucers, plates, small bowls
and shallow pans (as long as they are not too dirty).
- Position the dishes and cookware so that they do not get moved by the spray of water.
The upper rack can be adjusted for height by using the knobs located
on both sides of the rack itself (see fig.B).
Adjust the upper basket to the higher level and you have more
space to accommodate those taller pans and trays in the bottom
basket.
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6. Program Diagram
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Dismantle the door case and using
avometer to measure if the two
terminals of door switch is on.
check if door flap is OK
7.Maintenances Service and Trouble Shooting
7.1Maintenances Services
It may occur that the dishwasher does not function or does not function properly Before
calling for assistance,Iet us see what can be done first:have you forgotten to press one of the
buttons or to perfom an essential operation?
7.2 Trouble Shooting
analysis of the common breakdowns
Door switch trouble
Phenomenon: the dishwasher does not work
N
Y
N
Y
N
Y
Cable or program controller
is broken
Whether door is closed Close the door
Replace it
Change the door switch
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Whether water level
switch is ok
Check whether the
water intake veloscity is
Whether solenoid valve
i
s wo
rkin
g
Cable or the program
controller is broken
Water supply trouble
Phenomenon: water level cannot reach the required location
N
Y
N
Y
Y
Y
N
N
Y
measure whether solenoid valve
is electrified
Change the solenoid valve
Whether water is flowing in the hose
Whether the stopcock is turned on
Turn on the stopcock
Change water level switch
user’s water pressure is too
slow
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Cable or the program
controller is broken
The drain pump is
broken
Drain pump trouble
Phenomenon: water cannot be drained
Repair the pipeline
and drain pump
Whether drain
pump is working
Y
N
Whether the pipeline
and drain pump was
blocked
Whether drain
pump is electrified
N
Y
The drain hose is too
high
Y
N
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Program
controller or circuit is
b
roken
Whether heater is OK
Whether thermo limiter is
OK
Heating trouble
Phenomenon: program controller stop turnning
N
Y
N
Y
N
Y
Connect it well
change thermo limiter
change heater
Whether socket connector is connected well
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Water overflow trouble
Phenomenon: drain pump keep on working
Y N
N
N
Y
Y
Whether the water
overflow swich is ok
Whether water is deposited is
the bottom case
Whether water flows out of
the water overflow conduit
Bottom
case is leaking
change water
overflow switch
Program controller is
broken
Check whether the water
level switch is closed
change the water
level switch
Program controller is broken
N
Y
Y
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replace the power switch
check whether the circuit
between the two terminals
is open
Power supply trouble
Phenomenon: dashwaser cannot work
check whether the power connector N
is in position
Y
N
Y
Connect it properly
check whether the power connector
is in position
the cable or the controller board
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8. Ciruit Diagram
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