Midea JL1850S-RO User manual

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Service manual
Water Purifier
JL1850S-RO (Z80)
When replacing parts, be sure to use specified parts at parts list for safety and
performance maintenance

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CONTENTS
Safety instructure and accessories...................................................................... 3
Product Specification......................................................................................... 5
Principle of operation ........................................................................................ 7
System Diagram ................................................................................................ 8
Construction Views........................................................................................ 9~9
Product feature ................................................................................................ 10
Electrical schematics and wiring diagrams........................................................11
Preparation before operation of the water purifier.......................................12~15
The display panel is shown as below:............................................................... 16
DISPENSING WATER.................................................................................... 16
Operational precautions................................................................................... 17
Maintenance.................................................................................................... 18
Trouble shooting.........................................................................................19~30
Dismantling/Assembling.............................................................................31~35
Introduction of Key electrical components Parts.........................................35~36
Product Exploded views and Part List.........................................................36~39

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Safety instruction and accessories
(1) Safety instruction
16.Appliance the are obviously damaged must not operated.

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17.If the replacement of the UV-C emitter by the user is not allowed,this must be clearly stated.
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.
(2) Supplied items

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Product Specification

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Principle of operation
Supply power, all icons flash for 5 seconds, the product makes "beep" sound once
Low floater is closed,
lack of water
Y
High floater is
closed, full of water
Y
Water production (power on the
pump and inlet valve)
Supply water
Pressing the Heating/Cooling switch
Flush (power on the pump, inlet valve,
waste valve), duration is 25 seconds
N
Heating and Cooling is running
NTC reaches the
temperature point
Heating and Cooling are finished
Flush (power on the pump, inlet valve,
waste valve), duration is 50 seconds
Y
Discharge water for
40 seconds
Water production (power on
the pump and inlet valve)
Y

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Filter function
System Diagram
1、the water flow inside of water purifier：

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2、the water flow outside of water purifier：
Construction Views
1、Front 2、Back

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3、Left 4、right
4、Top 5、bottom
Product feature
Product strong point
Booster pump
1. Increase the pressure on the front end of the RO filter element; ensure the system
works properly to produce purified water.
2. Rated voltage: 24V.
3. Rated current: ≤1A.
4. Rated flow: ≥0.55L/min