Installation Instructions

¼see chapter: "Messages (type code EXX)", page 64
9.1.2. Messages (type code EXX)
1. The display shows :
- The symbol (!)
- The symbol
V
- The fault code (for example
E02
).
2. After correcting the failure, press the
V
key for 2 seconds. If
the error code continues to display, search for the cause in the
error table and apply the solution.
Code no.
Description Checking / solution
E00
The parameter storage unit on the PCU
electronic board is defective
Replace the PCU PCB
E01
The middle DHW temperature sensor is short
circuited
Note: DHW production is not covered
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
E02
The middle DHW temperature sensor is open
Note: DHW production is not covered
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
E04
The room temperature sensor is short circuited
Note: DHW production is handled by back-up if
back-up enabled
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
E05
The room temperature sensor is open
Note: DHW production is handled by back-up if
back-up enabled
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
C003212-B
2"
1
4
3
4
1
2
MENUMODE
9. Troubleshooting TWH 200E TWH 300E TWH 300EH
64
02/06/2015 - 300026515-001-06