Midea MWPU4W User manual

WATER PURIFIER
Instruction Manual
Model:
The diagram above is just for reference. Please take the
appearance of the actual product as the standard.
Before installing and operating your water purifier, please read the instruction
manual carefully and keep it for future reference.
MWPU4W

The packaging material used is recyclable; we recommend that you separate
plastic, paper and cardboard and give them to recycling companies. To help
preserve the environment, the refrigerant used in this product is R134a
(Hydrofluorocarbon -HFC), which does not affect the ozone layer and has
little impact on the greenhouse effect. Guidelines, waste from electrical and
electronic devices should be collected separately. If you need to dispose
of this appliance in the future, do NOT throw it away with the rest
of your domestic garbage.
DIRECTORY
1. Precaution
2. Your Direct Drinking Water Purifier
1-1 Safety Issues
1-2 Packing List
2-1. Part Name of Water Purifier
2-2. Model and Major Parameters
2-3. Product Features
2-4. Working Principle
3.Use Guide and Maintenance
3-1. Guidance on Unpacking and Installation
3-2. Machine Installation
3-3.The display panel is shown as below:
3-4. Maintenance
3-5.Troubleshooting
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1
2
2
2
3
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4
5

7
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8
9

1
1. Precaution
1-1 Safety Issues
Please note the following brief icons and rules for safe use of this product
Troubleshooting
When the machine fails, please
disconnect the power and water
source immediately
Maintenance
Never remove the parts on the
machine to avoid leakage or
damage
Avoid contact with children
Never have the machine
operated by a child
Temperature
Please use the product in a dry
place with the temperature of
4-43°C
Electricity prevention
To avoid leakage of electricity.
Anti-freeze
Never store or expose the product
duct in an environment less than 0°C
Avoid direct sunshine
Do not install the machine in a
place exposed to direct sunshine
Correct repair service
This machine can only be repaired
by qualified personnel designated
by this company
Emergency call
For any help, please call the local sale
service center or the national service
hotline
Accessories and filters
To maintain the normal operation of the
machine, be sure to use accessories
and filters supplied by original company
2.Children should be supervised to ensure that they do not play with the appliance.
3.If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similarly qualified persons in order to avoid a hazard.
4.Do not store explosive substances such as aerosol cans with a flammable propellant in this
appliance.
5.This appliance is intended to be used in household and similar applications such as staff kitchen
areas in shops, offices and other working environments; farm houses and by clients in hotels,
motels and other residential type environments; bed and breakfast type environments; catering
and similar non-retail applications.
6.The appliance is suitable for indoor use only.
7.WARNING: Keep ventilation openings, in the appliance enclosure or in the built-in structure, clear
of obstruction.
8.WARNING: Do not use mechanical devices or other means to accelerate the defrosting process,
other than those recommended by the manufacturer.
9.The appliance must not be immersed.
10.WARNING: To avoid a hazard due to instability of the appliance, it must be fixed in accordance
with the instructions.
11.This product is not recommended to use in areas above 2,000m altitude.
12. WARNING: UV radiation is dangerous for eyes and skin.Do not operate the UV-C emitter
outside the appliance.
13.WARNING: Do not operate the UV-C emitter when it is removed from the appliance enclosure;
14. WARNING: This appliance contains a UV emitter. Do not stare at the light source.
15.Unintended use of the appliance or damage to the housing may result in the escape of
dangerous UV-C radiation.UV-C radiation may,even in little doses,cause harm to the eyes and
skin.
16.Appliance the are obviously damaged must not operated.
17.If the replacement of the UV-C emitter by the user is not allowed,this must be clearly stated.
1.This appliance can be used by children aged from 8 years and above and persons with
reduced physical, sensory or mental capabilities or lack of experience and knowledge if
they have been given supervision or instruction concerning use of the appliance in a safe
way and understand the hazards involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without supervision.

2
2. Your Direct Drinking Water Purifier
2-1. Part Name of Water Purifier
NOTE:
Please use the product in a place with temperature of 4-43°C and relative humidity less than 85%.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Spout
Water collector
Door
Heating switch
Cooling switch
Power cord
Outlet of hot water
Water inlet
PART NAME
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Controls panel
Frontrapace
Outlet of cold water
The base
Concentrated water
connection
Outlet of the water
collector
1-2 Packing List
18.WARNING: When positioning the appliance, ensure the supply cord is not trapped or
damaged.
19.WARNING: Do not locate multiple portable socket-outlets or portable power supplies at
the rear of the appliance.
20.To ensure the product using well, please make sure the product installation, testing and
filter exchange are made by aftersales service person.
21.In order to make sure the machine can be used normally, please keep it stand still for 24
hours before powering up.
Instruction
Manual(1 copy)
1/4 "PE pipe(White)(2m)
1/4 "PE pipe(Blue)(2m)
Bracket(1PC) Screws(2PC)
Instruction Manual
3/8"PE pipe(1m)
Snap ring(4PC) Sealing ring
(1PC)
Small sealing
plug(1PC)
Large sealing
plug(1PC)
Pipe clamp
(1PC)
reducing valve(1PC)
Crossover sub
(1PC)
Filter connector
(1PC)

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2-2. Model and Major Parameters
2-3. Product Features
1. Hot & Warm & Cold water , three types of water temperature.
2. Full plate quality toughened glass design, elegant and beautiful.
3. The latest leakage protection device, to ensure the safety of Public environmental.
4. Water tank built-in UV-LED bacteriostatic, to ensure the safety and health of water.
5. Large screen display, working status at a glance.(heating /cooling /filtrating /filter lifetime/UV).
Rated power
Heating power
Cooling current
Rated pure water flow
Hot water capacity
Cold water capacity
Applicable environment
Applicable water pressure
Applicable water
Stage 1
Stage 2
Stage 3
Stage 4
Product size
Packing size
1.2L/min(0.3MPa)
994W
874W
1.0A
Model
7.5L/h(≥85°C)
4L/h(≤10°C)
4-43°C humidity ≤85%
0.1-0.4MPa
Tap water
360(W)*460(D)*1400(H) mm
480(W)*505(D)*1490(H) mm
C2 active carbon filter-F1
PP sediment filter-F1
RO reverse osmosis filter-F1
C1 active carbon filter-F1
TDS≤350ppm
Applicable water temperature
220-240V~
50/60Hz
Rated voltage
Rated frequency
MWPU4W
5-38°C

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2-4. Working Principle
1. Flowchart of water generation
2. Circuit diagram
C1 active carbon
filter-F1
RO reverse
osmosis filter-F1
C2 active carbon
filter-F1
PP sediment
filter-F1
Cold water outlet
Hot water outlet
Hot water
tank
Cold water
tank
Tap water
Concentrated
water connection
Pump
Inlet solenoid
valve

Waste water
solenoid valve
Warm water outlet
solenoid valve
Cold water outlet
solenoid valve
Hot water outlet
solenoid valve
Clean water tank
Marginal data
Inflow
Rinse and drainage
RO producing water
UV-LED
compressor
heater
Pump
Solenoid valve 1
Power board
Controls panel
UV lamp
Solenoid valve 2
Low level
float switch
High level
float switch
Leakage
detection board
Cooling switch
Heating switch
Cooling NTC
Heating NTC
Display board
Solenoid valve 3
Solenoid valve 4
Solenoid valve 5
Power adapter
N L PE

3. Filter Function Introduction and Replacement Cycle
Stage Filter Function
Stage 1
PP sediment
filter-F1
Carry out coarse filtration of original water,
and filter out mud, sand, impurity, iron rust
and suspension, etc.
Stage 2
C1 active carbon
filter-F1
Absorb unusual colors and odors, Remove
residual chlorine and organic substances
in water.
Stage 3
RO reverse
osmosis filter-F1
Nonionic Absorbing: Organics, alcohol,
ketone, aldehyde, phenol.
Particulate retention: Solid suspended
solids, Colloids.
Stage 4 C2 active carbon
filter-F1
Further absorb micro-molecules and
organic substances in water. Make water
taste better.
3. Use Guide and Maintenance
WARNING: Please cut off water source before replacing filters. Never plug filters in
water running state.
3-1. Guidance on Unpacking and Installation
1. Unpack the product.
2. Put the accessories aside.
3. Take out the quick joint, and install it on the water pipe. Clamps should not be missed.
7. Install the clean filter in the product, hold the filter with the left hand and enclosure of
filter with the right hand, and insert it upwards in the filter, tighten it by turning
anticlockwise, the installation order is: PP sediment filter-F1→C1 active carbon
filter-F1→RO reverse osmosis filter-F1→C2 active carbon filter-F1.After washing and
installation of filters, the lower door must be fixed with original screws.
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5. Use the after sale accessory—filter flushing tip, the arrow direction is the water flow
direction, insert the PE pipe in the quick joint.
6. Insert the C1 active carbon filter into the filter flushing tip, tighten it by turning
anticlockwise, and open the water tap to flush the filter till it doesn't discharge black
water, for about 10min; Take the same step to flush the C2 active
carbon filter-F1.
4. Open the lower door .
Replacement
Cycle
3-6 months
6-12 months
12-24 months
6-12 months
Notice: Filter life time is an expected value, due to different region, water quality, usage
and season, the actual lifetime will be different, please follow the advise of the local
service station.

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8. Take out the pin of the quick joint at the rear of the products side plate' s, and then take
out the white plug.
9. Insert the water inlet PE pipe in the quick joint, and tighten the pin. The new hose-sets
supplied with the appliance are to be used and that old hose-sets should not be reused.
10.The water cooler plug cord into a ground fault interrupter receptacle.
11. After installation, supply water and power. Discharge the first 3 tanks of purified
water by pressing the button, press the Heating and Cooling buttons on the rear panel
to purify water again, then the water output is drinkable.
12.When installing filter and replace filter please turn off the water and power supply
before installation and replacement.
13.Concentrated water and the water drained from the
water tray can be directly discharged into the sewer
or the water drained from the water box can also be
discharged to the bucket. (Note: Drainage pipe must
be vertical and shall not be "U" or twisted at any section)
Sewer
Water inlet
1/4" PE pipe
(White)
Tap water
Reducing valve
Outlet of the water
collector
Concentrated water
connection 1/4" PE pipe(Blue)
Bucket
Pipe clamp
Floo r dr ai n
3/8" PE pipe
Note: When the tap water pressure exceeds 0.4MPa, it requires installing the pressure relief valve.
Keep the water flowing arrow towards the water inlet interface of the machine.
Lower
door
Please install the filter to align
the positioning mark line, below
picture for reference.

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3-2. Machine Installation
WARNING! To avoid a hazard due to instability of the appliance, it must be fixed in accordance
with the instructions.
Bracket
The hole for
tighten screw
5 6
1-2. Loosen the screw of the left or right bottom angle
just as the picture shown.
3. Use the screw to fix the bracket on the left or right
bottom angle of the water purifier.
4. Make a hole on the floor's or the desk's surface where
the water dispenser will be installed.
5. Fix the bracket on the floor by screw tightly.
6. Tighten the screw.
Water purifier
3-3.The display panel is shown as below:
14:Water tray discharge treatment
Large sealing
Small sealing
Sealing ring
Sealing ring
Water tray drainage outlet
Drainage hole of the front housing
Step 2, install the big sealing
plug in the drainage hole of the
front housing, and then press
it in place with the water tray.
When the water can't be
smoothly discharged from
the water tray, please
install the sealing ring on
the drainage outlet slot of
the water tray.
If the remaining water in the water
tray won't be received with water
tank, the big and small sealing plugs
shall be adopted.
Step 1, install the small sealing plug
in the drainage outlet of the water tray,
and ensure installing in place.
1. “ ” When displays as this, it indicates that water heating is completed.
2. “ ”When displays as this, it indicates that water is heating.
3. “ ”When displays as this, it indicates that water cooling is completed.
4. “ ”When displays as this, it indicates that water is cooling.
5. “ ”It indicates that there's insufficient water in the machine.
6. “ ”It indicates that there's sufficient water in the machine.
7. “ ”When it is on, it indicates that the machine is purifying water.
8. “ ”When indicator in this area flashes, it indicates that the filter of corresponding
level expires, please replace the filter.
9. “ ” It means the machine accumulated working days.

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1. Keep this machine in a dry and cool place and avoid direct sunshine. Rearward of the machine
shall be at least 25 cm away from the wall. Never put the machine on paper or foam, which may
store water and then cause creepage. Never put anything flammable beside this machine.
Do not use the machine outdoors or in a place that can be splashed by water.
2. For the water purifier, the installation and replacement of filters must be carried out
by qualified personnel.
3. In case the machine is not in use for a long time, turn off the heating switch or the refrigerating
switch to save power.
4. In case the machine is not needed for a long time, please take off the plug, turn off the copper
chrome-plated ball valve and drain off the remaining water through the outlet. For another use,
discharge water for 10 min. In the event that the machine is blocked by ice due to the
environment below ice point, keep the refrigerating switch closed for 4 hours and then turn it on
to continue the operation.
5. In case the water supply is cut off, please close the feed water ball valve and cut off the power,
after water re-supply, please open the other faucets to discharge sediment and then turn on the
feed water ball valve.
6. The machine must use an earthed three-pin socket and a reliable creepage protection switch.
7. Never use organic solvents such as gasoline to clean the machine: strictly prohibit washing the
machine with water or splashing water to the machine.
8. Never turn on (off) the machine by inserting the plug into (pulling the plug out from) the socket.
Never increase the length of the supply cord to avoid fire.
9. If the supply cord is damaged, it must be replaced by the manufacturer or qualified person so
as to avoid a hazard.
10. The water source for the water purifier is civil tap water.
11. Never dismantle spare parts of the machine to avoid water leakage or damage.
12. Never turn the machine upside down or lean it more than 45° when moving it so as to avoid
any damage to it or any accident.
13. Limited warranty: electrical components and water system are warranted for 12 months from
date of purchasing.
3-4. Maintenance

1. Touch the cold water button“ ”,the device starts discharging cold water; Touch the cold
water button“ ”again, the device stops discharging water, finish getting water.
2. Touch the normal water button“ ”,the device starts discharging normal water; Touch the
normal water button“ ”again, the device stops discharging water, finish getting water.
3. Touch the child lock button“ ”, then touch the hot water button“ ”, the indicator turns
on and the device starts discharging hot water. Touch the anyone button, the device stops
discharging water, finish getting water.
4.Long press the cold water button “ ” + warm water button “ ” for 3 seconds to enter
the filter reset mode. The indicator light and name of the first filter flash, and the
remaining percentage of filter life displays in the bottom right corner of the screen.
Long press the cold water button “ ”for 3 seconds to reset the filter, and the life of the
filter is restored to 100%. Press the cold water button “ ”to switch to the next filter
display, and operate the same to reset and switch to the next filter. When it comes to the
last filter, press the cold water button “ ”to exit the filter reset mode.

In case of failure, please carry out inspection according to the requirements below. If unresolved,
please contact the local service agency.
It is a normal state that the following circumstances occur when the water purifier is used.
1. During the heating, the heating tube may generate slight noises. This is a normal state.
2. When the heating tank is being heated without water, the anti dry-burning device will
disconnect automatically and can not reset by its own. The reset must be completed by a
professional technician. The design is in accordance with the national safety requirements.
3. When an ambient temperature is higher, the cooling capacity may be slower, which is a
normal state.
3-5.Troubleshooting
Problem Reason Solution
Output water quality is low
Amount of produced water
is reduced seriously
No water output after
replacing the filter
Screen displays E0
Screen displays Ec, Ed
Screen displays Fc, E7
Screen displays E6
Filter is blocked or not
replaced in time
Water inlet ball valve is
not fully opened
Water pressure is too low
Filter failure
Long-term shutdown
(over 3 days)
Source water quality is
low
Water pipe is blocked
by air
Water leakage
Water level switch failure
Heating function is
abnormal
Temperature sensor is
abnormal
Water inlet ball valve is
not fully opened
Water pressure is too low
Filter is blocked or not
replaced in time
Please contact the local service
office to replace the filter in time.
Fully open the water inlet ball
valve
Take measures for pressure
boosting
Please contact the local
service office
Please contact the local
service office
Please contact the local
service office
Please contact the local
service office
Please contact the local
service office
Please contact the local service
office to replace the filter in time.
Fully open the water inlet ball
valve
Take measures for pressure
boosting
Please contact the local service
office to replace the filter in time.
Continuously start and stop the
product for 5 times at 40 seconds
intervals to automatically flush
the filtration system, and feed
and discharge the water from the
water storage system according
to the first step of the Clean
Maintenance; after that, the
output water can be used
normally
Use municipal tap water
9

The product is subject to change without notice.
Please keep this manual properly.