Ariston Heaters Fan User Manual

Resetting Occasionally, the high temperature limit shut off device may trigger and shut the
High Limit system down. This occurs when water temperature exceeds 190°F and shuts off
Switch power to the heating element. The shut off device may also trigger from a power
outage or electrical storm.
To reset:
1. IMPORTANT: Disconnect heater from electrical power.
2. Remove front cover plate and temperature selector dial.
3. Firmly press blue reset button, (B, Fig. 3-5).
4. Replace temperature dial and cover plate, reconnect power.
5. IMPORTANT: Check the operation of the thermostat, turn temperature dial from
high to low, if the red light does not go off on low setting, disconnect power cord
and call a service person to replace thermostat.
6. If the system works, place dial setting to desired setting;
Note: a lower setting is more economical, and reduces the risk of scalding.
CAUTION: Call a technician if the high limit needs to be reset frequently
Water does 1. Make sure the power cord is plugged in.
not get hot 2. Make sure on/off switch is turned on (F, Fig. 3-4 or #8, Fig. 4)
3. Make sure thermostat dial (M, Fig. 3-4 or #7, Fig. 4) has been turned clockwise,
and red on/off switch light has come on.
4. If light does not come on, check that the blue reset button (B, Fig. 3-5) is pushed
in; follow steps from previous section.
5. If the indicator light works properly but temperature does not get hot at tap, test for a
plumbing crossover; shut off cold supply to heater and open hot water tap. There
should be no water flowing. Any continued flow indicates a crossover which will effect
the temperature and will need to be corrected.
Light not 1. If the on/off light switch does not come on, but water gets hot, check for faulty bulb.
On 2. If water is cold , turn the temperature dial clockwise to a higher temperature setting.
If still no light follow previous section on how to reset the high limit switch.
Brown Water 1. Brown or rusty water indicates a "spent" anode rod. Replace anode rod.
Odor in Water 1. Smelly water could be due to an unusual reaction between local water and the heater's
anode rod. Check anode rod.
Water is too 1. Turn the temperature selector dial (M, Fig. 3-4) counter clockwise to lower temperature
hot If temperature never lowers then replace thermostat.
Leaking 1. Check water fittings and T&P fitting on top of tank.
2. Remove front cover and inspect heating element gasket. If gasket is not seated prop
erly, unplug heater and follow steps to drain heater. Then remove heating element to
reseat gasket. A torn gasket will need to be replaced.