DE DIETRICH KALIKO TWH 200E - TWH 300E - TWH 300EH - Manual (Page 62)

Code no. Description Checking / solution
B26 The bottom DHW temperature sensor is
open
Bad connection
4 Check whether the sensor is connected
4 Check the link and the connectors
4
Check that the sensor has been correctly fitted
Sensor fault
4
Check the Ohmic value of the sensor
4
Replace the sensor if necessary
B27 The top DHW temperature sensor is short
circuited
Bad connection
4
Check whether the sensor is connected
4
Check the link and the connectors
4 Check that the sensor has been correctly fitted
Sensor fault
4
Check the Ohmic value of the sensor
4
Replace the sensor if necessary
B28 The top DHW temperature sensor is open Bad connection
4
Check whether the sensor is connected
4
Check the link and the connectors
4
Check that the sensor has been correctly fitted
Sensor fault
4 Check the Ohmic value of the sensor
4
Replace the sensor if necessary
B32 The impressed current anode is in open
circuit.
4 Check that the connection cable between the SCU PCB and the
anode is not severed
4
Check that the anode is not broken
4
Check that the DHW tank is correctly filled with water
Remarks:
4
Domestic hot water production has stopped but can nonetheless
be restarted using key V (For 72 hours)
4 Protection against corrosion is not ensured
B33 The impressed current anode is short-
circuited.
4 Check that the connection cable between the PCU PCB and the
anode is not short-circuited
4 Check that the anode is not short-circuited
Remarks:
4
Domestic hot water production has stopped but can nonetheless
be restarted using key V (For 72 hours)
4
Protection against corrosion is not ensured
B40 Measurement error on the domestic hot
water temperature sensors.
Remarks:
4
This message is only displayed on initial
commissioning.
4 This message disappears after 10
minutes or when you press the B key.
The 3 sensors do not measure the same value
4
Check the location of the sensors.
If the causes of the problem are still present after several attempts at
automatic start-up, the appliance goes into lockdown mode (also
called failure).
¼see chapter: "Messages (type code EXX)", page 61
8. Troubleshooting TWH 200E TWH 300E TWH 300EH
60 03/02/2014 - 300026515-001-03