40 - EN
EN - 41
Malfunction code
PREHEAT_PRES ERROR.
There is no communication between the pre-heater and the unit.
■
When orientation is RIGHT: Preheater is on the left side;
■
When orientation is LEFT: Preheater is on the right side.
Question
Answer
Action
1
Are there also
sensor errors
present?
Yes
Follow the instructions of the SENSOR_ETA ERROR / SENSOR_ODA ERROR / SENSOR EHA ERROR /
SENSOR_SUP ERROR table.
No
1. Access the main board as instructed in the chapter “How to gain access to the main board”.
2. Go to the next question.
2
Are the
connections at
the main board
correct?
4
Yes
1. Get the pre-heater service set.
2. Replace the pre-heater as instructed in its supplied manual.
3. Connect the power to the unit.
Be aware of the danger for electrical shocks and
rotating parts.
4. Reset the errors as instructed in the chapter “How to reset errors”.
5. Go to the next question.
No
1. Reconnect the pre-heater connectors.
2. Follow the procedure for ending the maintenance.
3. Reset the errors as instructed in the chapter “How to reset errors”.
3
Did the error
come back?
Yes
1. Get the main board service set
2. Replace the main board as instructed in its supplied manual.
3. Follow the procedure for ending the maintenance.
No
Follow the procedure for ending the maintenance.
Malfunction code
SENSOR_ETA ERROR /
SENSOR_ODA ERROR / SENSOR
EHA ERROR / SENSOR_SUP
ERROR.
The extract / outdoor / exhaust / supply air sensor has a malfunction.
■
When orientation is RIGHT:
SENSOR_ETA is in top of the unit on the right side;
SENSOR_SUP is in middle of the unit on the right side;
■
When orientation is LEFT:
SENSOR_ETA is in top of the unit on the left side;
SENSOR_SUP is in middle of the unit on the left side.
Question
Answer
Action
1
Are all SENSOR
ERRORS
activated?
Yes
1. Access the main board as instructed in the chapter “How to gain access to the main board”.
2. Disconnect all sensor connectors from the main board.
3. Connect the power to the unit.
Be aware of the danger for electrical shocks and
rotating parts.
4. Reset the errors as instructed in the chapter “How to reset errors”.
5. Reconnect one sensor.
6. Wait 2 minutes.
7. Repeat step 5 and 6 until the unit has an error.
8. Solve this error according to its error table.
9. Reset the errors as instructed in the chapter “How to reset errors”.
10. Go to question 5.
No
1. Access the main board as instructed in the chapter “How to gain access to the main board”.
2. Go to the next question.
2
Are the
connections at
the main board
correct?
4
Yes
If SENSOR_ETA ERROR or SENSOR_ODA ERROR:
1. Remove the top-section sensor as instructed in the chapter “How to gain access to the top-section
sensor”.
2. Go to the next question.
If SENSOR_EHA ERROR or SENSOR_SUP ERROR:
1. Access the mid-section sensor as instructed in the chapter “How to gain access to the mid-section
sensor”.
2. Go to the next question.
No
1. Reconnect the sensor connector as described in the technical specification chapter.
2. Follow the procedure for ending the maintenance.
3. Reset the errors as instructed in the chapter “How to reset errors”.
3
Is the connection
at the sensor PCB
correct?
Yes
1. Get the correct sensor service set.
2. Replace the sensor as instructed in its supplied manual.
3. Reset the errors as instructed in the chapter “How to reset errors”.
4. Go to the next question.
No
1. Reconnect the sensor connector.
2. Follow the procedure for ending the maintenance.
3. Reset the errors as instructed in the chapter “How to reset errors”.
4
Did the error
come back?
Yes
1. Get the main board service set.
2. Replace the main board as instructed in its supplied manual.
3. Follow the procedure for ending the maintenance.
4
You can find the correct connection in the technical specification chapter.
