Support | Ariston

Support

Storage Water Heaters
No hot water
POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Thermostat is not fitted properly on the heating element

Remove and fit correctly.

Thermal cut-out activated

Reset the safety device.

Electric switch not ON

Turn ON the switch.

Electric heating element cut-off or short-circuited

Replace the heating element and the gaskets.

No power supply

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

Insufficient Hot Water Produced
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

Water Too Hot
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

Bad egg odor of the hot water
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”

Frequent and short ON/OFF cycles
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.

Water heater creates noise during heating
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

Water heater creates noise (Whistle on the valve) when cold water is drawn
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

Circuit breaker cuts out when the unit is switched on
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.

Frequent leakage of safety valve
POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Defective valve or too much pressure

Replace or install pressure reducer

Water leak (formation of rust) on upper cover closing area, installation bracket area, bottom cover closing area, counter-flange.
POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Boiler perforation due to corrosion by aggressive water.

Replace water heater

Instant Water Heaters
No Hot Water
POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Power supply failure

Check incoming power supply to the heater and ensure selector knob is at "ON" mode.

Insufficient water flow rate to activate flow switch/ sensor

Refer to problem on "low flow rate".

Defective components

Replace components.

Heating indicator "blinking"

Check on the cables connections, replace PCB.

Overheating indicator "blinking", due to higher inlet water temperature

Adjust the temperature settings higher.

No Water/ Low Flow Rate
POSSIBLE CAUSES
ACTION(S) TO BE TAKEN

Stop cock valve is at close position

Open stop-cock valve to fully open position.

Low water pressure at the inlet

Ensure that 0.3 bar of minimum water pressure.

Mesh filter is jammed

Remove and clean up mesh filter.

Debris in hand shower, twisted flexible hose

Descale the hole with a soft brush.