Itho Daalderop Smartboiler - Page 43

E15 | 15
Heater selection error
Cause Solution
a) Incorrect control board. 1. Reset the error.
2. Replace the control board.
b) Incorrect identification resistor. 1. Replace the identification resistor on the
control board.
Smartboiler 6800 Ohm (red).
Green Energy Smartboiler
®
1500 Ohm
(white).
E20 | 20
Boiling dry
Cause Solution
a) The heater is not filled with water. 1. Disconnect the appliance from the mains
power.
2. Fill the heater with water before turning on
the appliance.
3. Reset the error.
E24 | 24
Blocking continues for too long
Cause Solution
a) The appliance is blocked for longer than 20
hours.
1. Reset the error.
2. Replace the control board.
E25 | 25
Temperature sensor error (RefLo)
Cause Solution
a) The sensor measures a temperature outside
the normal working range (sensor open).
1. Reset the error.
2. Replace the sensor.
3. Replace the control board.
E26 | 26
Temperature sensor error (RefLo)
Cause Solution
a) The sensor measures a temperature outside
the normal working range (sensor short
circuit).
1. Reset the error.
2. Replace the sensor.
3. Replace the control board.
E27 | 27
Temperature sensor error (RefHi)
Cause Solution
a) The sensor measures a temperature outside
the normal working range (sensor open).
1. Reset the error.
2. Replace the sensor.
3. Replace the control board.
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