Troubleshooting; General Errors - AO Smith DRE 52 Manuel D'installation, D'utilisation Et D'entretien

10
10.1
n
Indication
Water leakage
Insufficient or no hot
water
Earth leakage circuit
breaker is out
0313851_DRE_NLUKFR, 30-03-2022

Troubleshooting

General errors

Note
For the coding of the connections, refer to the Electrical wiring diagram.
Cause
There is a leakage from a threaded
water connection.
There is a leakage from another nearby
water heater or pipe segment.
There is a leakage from the water heater
tank.
The water heater is off.
The temperature is set too low.
There is no supply voltage.
The hot water supply is used up.
A safety device is activated.
There is not enough water in the tank.
One of the heating elements is
defective.
Measure
Tighten the threaded connection.
Trace the leakage.
Contact the supplier of your water heater.
Turn on the water heater (see 4.1).
Set the regulating thermostats higher.
Make sure that:
- the isolator is in ON position.
- there is power on the isolator.
- there is power to the electrical
connector block.
The measured voltage must be
400 V (-15%, +10%).
AC
Reduce the hot water consumption. Wait
until the water heater heats up.
- Make sure that the voltage between
the connections of the heating
elements is 230VAC (-15%, +10%).
- Refer to indication "A safety device is
activated", next page.
- Make sure that the water heater is
filled with water.
- Measure the resistance value between
each heating element connection and
the outside of the tank. The value
must be infinite.
- Determine which element is defective.
EN
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