PRODUCT SUPPORT

Troubleshooting Guide

Call or email us if you need any help with your Ariston product! There's also a helpful troubleshooting guide below that will help you through solving some of the more common problems.

Useful Numbers

CUSTOMER SERVICE HOTLINE

+65 6305 0899 (After sales service)

SALES ENQUIRY EMAIL

info.sg@aristonthermo.com

OPERATING HOURS

Mon - Fri: 9am to 5pm

Sat/Sun/Public Holidays: Closed

FOR STORAGE ELECTRIC WATER HEATERS

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Thermostat is not fitted properly on the heating element

Remove and fit correctly.

Two-pole thermostat safety device activated

Reset the safety device if the fault is detected when the heater is switched on the first time, or remove the lime scale from the heating xxx element - OR - Replace the thermostat in all other cases.

Electric switch is off

Turn on the electric switch

Faulty heating element

Replace the heating element and the gaskets

No power supply

Check the continuity on the power supply cables and connection terminals.

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Reversed connection of hot/cold water pipe

Connect pipes correctly

Incorrect water connections

Re-connect correctly

Insufficient water heater capacity

Change to a suitable capacity

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Defective thermostat

Replace the thermostat

Too much calcium or mud on the tank

Remove the calcium or mud

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Bacteria in the water

Drain, clean and rinse the inner tank

Water temperature is too low

Turn the thermostat to “maximum”

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Excessive formation of lime or scale on the heating element

Clean the heating element

Thermal effect on the current thermostat

No action should be taken if this occurs at the end of the heating cycle. Replace the thermostat if it occurs at the beginning of the heating cycle.

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Hard water

Descale

Natural effect due to micro-boiling of the water over the heating element.

Replace the heating element with anti-noise model

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Due to different water flow and pressure in the system which may cause noise when cold water is drawn.

Replace the valve with anti-noise model

Pipes too narrow

Increase diameter

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Incorrect electrical power setting

Check the power setting, modify the protection

Resistance is earthed

Test it and if necessary, replace it.

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Defective valve or too much pressure

Replace or install pressure reducer

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Boiler perforation due to corrosion by aggressive water.

Replace water heater

FOR INSTANT ELECTRIC WATER HEATERS

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Tap turned off

Turn on the tap

Defective thermostat

Replace if it fails to cut or connect

Defective micro-switch

Replace micro-switch

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

No power supply

Check the continuity of the power supply cables and connection terminals

Defective thermal cut-out

Replace thermal cut-out

Defective electronic card

Replace electronic card

POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Green indicator is off

Refer to above

Thermostat not regulated to max

Turn the thermostat to maximum

Defective triac

Replace triac (if red indicator is still off, replace the electric card)

CAUTION: RISK OF ELECTRIC SHOCK
  • To reduce risk of electric shock, do not attempt to repair your water heater appliance by yourself.
  • No user-serviceable parts are included with the product.
  • Keep out of reach of children.

Refer servicing to a qualified service center.