background image

Troubleshooting

Problem

Possible causes

Corrective action

Display is off
No hot water

1. No power to heater
2. No power at electric socket
3. Failure in control circuit or 

internal wiring

1. Switch on power to heater
2. Check power socket
3. Contact local authorized 

dealer

Display is off
High water temperature

1. High temperature limit switch 

tripped

2. Electrical circuit failure

Switch off power supply and 
contact local authorized dealer

Display on, no hot water

Heating element or internal circuit 
failure

Contact local authorized dealer

Leaking from tank

Leaking tank or components

Switch off power supply and 
contact local authorized dealer

Dripping from pipe joints

Unsealed joints

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-core terminal 
open circuit or short circuit

Contact local authorized dealer

Display “E2” 

Black wire of two-core terminal 
open circuit or short circuit

Contact local authorized dealer

Display “E3” 

White wire of two-core terminal 
open circuit or short circuit

Contact local authorized dealer

Display “EH” 

High temperature

Contact local authorized dealer

Display “EL”

Low voltage protection

Resume use when voltage is 
normal

Display “EA”

Relay circuit issue

Switch off power supply and 
contact local authorized dealer

Display ‘E-fault’

External grounding fault

Switch off power supply and 
contact local authorized dealer

Display ‘     ‘

Anode needs to be replaced 

Contact local authorized dealer

18

Содержание Gen 8 Digital

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

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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