Itho Daalderop Smartboiler - Page 44

E28 | 28
Temperature sensor error (RefHi)
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.
E29 | 29
Temperature sensor error (Tup1)
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.
E30 | 30
Temperature sensor error (Tup1)
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.
E31 | 31
Temperature sensor error (Tup2)
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.
E32 | 32
Temperature sensor error (Tup2)
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.
E37 | 37
Heating element error
Cause Solution
a) The heating element does not work properly. 1. Check the resistance heating element's
cabling and connectors.
2. Check the resistance heating element and
replace if necessary.
b) The control board's fuse is defective. 1. Replace the control board.
c) The control board does not work properly. 1. Check the cabling and connectors of the
appliance and correct as necessary.
2. Replace the control board.
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