Maintenance Manual
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7. Drain the tank and remove the heating unit (heating body and heating element).
8. Remove the scale deposited as silt or debris in the bottom of the tank and tho-
roughly clean the lining. Do not scrape or strike the scale attached to the walls
as this may damage the inner lining of the water heater.
9. The anode does not need to be inspected or replaced.
10. Refit the heating unit using a new gasket and tighten the nuts gradually and
reasonably (crosswise).
11. Fill the water heater by leaving a hot water tap open; when water flows out of
the tap, the water heater is full.
12. Check the gasket is water tight, then put the thermostat and its holder back in
place, following the above procedure in reverse order.
13. Power the water heater up again.
14. The next day, check the gasket is water tight and, if necessary, tighten the nuts
again slightly.
3. Trouble-shooting
3.1 Troubleshooting by user: control lamp display
Indicator light n°1
Lamp status
Meaning
Remarks
Orange
Continuous light (orange)
Normal operation:
- Water heating
- Corrosion protection
provided
The product is running on the
mains power
Green
Continuous light (green)
Normal operation Off-peak
hours / Continuous:
- Hot water available
- Corrosion protection
provided
The product is running on the
mains power
Slow flashing (green)
Normal operation during
Peak Hours:
- Hot water available
- Corrosion protection
provided
The product is running on
battery
Rapid flashing (green)
Abnormal operation
Contact your installer or
customer service.
OFF
Lamp off
Abnormal operation
No mains power:
- Switch to forced operation
on your switchboard, and/or
- Check the circuit breaker
position
Æ
If the lamp remains off,
contact your installer or
customer service..
5 s
1 s