Zehnder Rittling ComfoAir 180, Руководство пользователя

Страница: 27 / 32

26 - EN EN- 27
Malfunction code
Pre heater does not heat sufficiently
Question Answer Action
1 Is P51 set to the correct value?
( 0 = No pre heater present;
1 = Pre heater present.) Yes Go to the next question.
No
1. Set P51 to the correct value.
2. Reset the unit (P74 on 1).
2 Was the temperature increase of T1
between 1ºC and 4ºC in 3 minutes
time?
Yes
1. Reduce the airflow.
2. Reset the unit (P74 on 1).
No
1. Access the control PCB as described at the
introduction of the malfunction chapters.
2. Remove the cable of the pre heater from the control
PCB.
3. Go to the next question.
3 Is the resistance on the
pre heater connector correct?
(> 70Ω) Yes Go to the next question.
No
Go to the last question.
4 Is the resistance on the
pre heater connector correct?
(<
∞
)
Yes Go to the next question.
No
Replace the pre heater cable.
5 Are the connections at the
pre heater correct?
(See the schematics in the technical
specification chapter)
Yes
1. Get the pre heater service set.
2. Replace the pre heater.
No
Reconnect the pre heater.
6 Is the resistance of NTC sensor T1
correct?
(See the specifications in the technical
specification chapter)
Yes
1. Get the control PCB service set
2. Replace the control PCB.
No
1. Get the repair kit for the NTC sensor
2. Replace the NTC sensor.
Malfunction code
Pre heater becomes too hot (T1 > 40°C)
Check the following:
1 Fan settings (too low?)
2 Supply valves (too closed?)
3 Supply air ducts (blockages?)
Malfunction code /
Exhaust / Supply fan not rotating
Question Answer Action
1 n/a
n/a
1. Reset the unit (P74 on 1).
2. Go to the next question.
2 Did the malfunction code reapper?
Yes
1. Access the control PCB as described at the
introduction of the malfunction chapters.
2. Turn on the power of the unit.
Risk of electrocution.
3. Go to the next question.
3 Is there 230VAC present
on the fan?
(On the “Vent” connector.)
Yes
1. Activate the self-test (P76 on 1).
2. Go to the next question.
No
1. Disconnect the power from the unit.
2. Get the control PCB service set.
3. Replace the control PCB.
4 Is a control signal present
on the fan?
(1,5 – 10 VDC between the yellow and
blue wire of the “Vent” connector.)
Yes
1. Disconnect the power from the unit.
2. Get the fan service set.
3. Replace the fan.
No
1. Disconnect the power from the unit.
2. Get the control PCB service set.
3. Replace the control PCB.