background image

Read Before Use

Before installation and use of this device, please read this manual carefully and keep it ready for future 
reference.

Engage an experienced water heater installer. A. O. Smith and AOS Bath will not be held liable by any 
damages or piping leakages caused by incorrect installations.

This heater is suitable for residential use. Any attempts to use it for commercial purposes will reduce the 
heater lifespan. Once the heater has been installed, owners should run checks every 6 months and the 
system should undergo maintenance every 3 years. If there are any operational irregularities, please 
discontinue use of the heater immediately and call our company hotline.

Before any instances of heater repair and maintenance, users should disconnect the power supply. Any 
modifications and repairs should only be handled by company approved technicians.

Heaters may cause serious scalding. Mix hot with cold water before showering or taking a bath.

If heater suffers from dry heating, any resultant steam and hot water may cause serious scalding. As a 
result, users should ensure that the heater tank is always full of water. If dry heating occurs, immediately 
cut off electrical & water supply and stop using the heater. Call our company service hotline and wait for 
our approved technicians to do the necessary checks and repair. 

For safety issues, do not change any of the settings of the pressure relief valve or temperature pressure 
relief valve. Ensure all blockages are clear and install a drainage pipe to allow the overflow water to be 
discharged into a floor drain.

Water produced by the heater is not potable and should not be consumed. 

Any circuits, gauges, circuit breakers and wiring used for the heater must meet current ampere 
requirements and be checked by approved technicians. Do not use damaged circuitry or an outdated, 
loose, unstable power outlet for the heater. This will cause electrical shocks, fuses, fires, etc. 

Heater electrical connections must be used in tandem with a dedicated power source located at a dry 
area. Do not handle electrical points with wet hands. This may cause electrocution or physical damage to 
self.

A white translucent colour to the water produced by the heater is considered normal. This is due to the air 
pockets or foam caused by the pressure of dissolved air in water after heating.

Note

: Incomplete compliance of this manual’s contents may cause fires, financial or property losses, 

personal harm or death.

Warning

: This is an electronic appliance and must be used with reliable connections. 

4

Summary of Contents for Gen 8 Digital

Page 1: ...Mini Water Heater Gen 8 Digital EWH 40MINI2 User Guide...

Page 2: ...es With 21 fully owned plants they are currently the largest water heater manufacturer in the world Over the years A O Smith has gained the respect and support of homeowners contractors architects and...

Page 3: ...Contents Specifications 5 Safety Features 6 Product Features 6 Installation 9 Directions For Use 13 Maintenance Instructions 17 Troubleshooting 18 3...

Page 4: ...f electrical water supply and stop using the heater Call our company service hotline and wait for our approved technicians to do the necessary checks and repair For safety issues do not change any of...

Page 5: ...rature range C 35 75 5 Rated water pressure MPa 0 8 Max min inlet water pressure MPa 2 0 3 0 Inlet outlet connection inches Waterproof grade IPX4 A O Smith reserves the right to make product changes o...

Page 6: ...gent Maintenance Monitor IMM IMM helps to prevent corrosion of the internal heater tank The intelligent active system releases protective ions into the tank neutralizing aggressive corrosive ions in t...

Page 7: ...display of hot water from the control panel Instant Heating Patent ZL200820185859 4 Intelligent sleep mode The heater goes into power saving mode after 3 minutes of inactivity The latest instant tech...

Page 8: ...longest warranty in Singapore 3years 8 High Efficiency Insulation A polyurethane foam insulating layer without freon is used which provides a good insulation and reduces heat loss effectively Blue Dia...

Page 9: ...e heater The system must not be installed vertically Mounting Procedures and Precautions The surface for installation must be capable of supporting at least four times the weight of the water heater w...

Page 10: ...permanently connected to the electrical supply through a double pole switch having a contact separation of at least 3mm in all poles incorporated in the fixed wiring The insulation of the fixed wirin...

Page 11: ...The pipes should not be blocked The relief valve is to be operated regularly to remove lime deposits and to verify that it is not blocked If the water pressure of the inlet pipe approaches or exceeds...

Page 12: ...tery cover 12 Filling the Tank After all the pipes are connected open the discharge valve of the water heater and then the feed valve Fill the water heater with water and exhaust the air till a unifor...

Page 13: ...ting begins and the heating indicator lights up The default settings are Power 4000W Time 12 00 Thermostat 70 C If the water heater encounters a power outage all settings will revert to default settin...

Page 14: ...es on Before setting the timer ensure the clock is adjusted to the right time Note that the timer start time is set first followed by the end time Toggle the Program button till the Timer indicator is...

Page 15: ...tive AES is a memory chip that records up to 21 days of your family s usage habits It is an automatic timer which preheats water according to your family s needs and sends the heater into energy savin...

Page 16: ...ator will flash on the panel Users will be prompted to contact a qualified AOS service personnel to change their depleted anode rod and perform a tank flush Tank lifespan will be prolonged when the co...

Page 17: ...er heater to the tap water pipeline and fill water from this end The water inlet pipe connection is connected to floor drain by pipes Discharge water from this end 4 Open the water inlet valve to get...

Page 18: ...oints Reconnect pipes of the water heater and be sure to use sealant Display E0 Blue wire of two core terminal open circuit or short circuit Contact local authorized dealer Display E1 Red wire of two...

Page 19: ...r with the relief valve Hot water over 50 C will scald Always test the water temperature by mixing it with cold water before coming into contact with it This appliance is not intended for use by perso...

Reviews: