36 - EN
EN - 37
Problem: The non-wireless controls are not working as expected.
Question
Answer
Action
1
Is the bathroom control
active? (Active = bathroom
switch on or recently on in
last half hour)
Yes
1. If bathroom switch still on: Turn the bathroom switch off.
2. Wait until the timer of the bathroom control has finished. This takes no more than half an hour.
No
Go to the next question.
2
Are the settings of the
analogue input programmed
as per the specifications of
the controls?
(See the manual for the
controls for the correct
specifications.)
Yes
Go to the next question.
No
Set the ANALOGUE 0-10 V menus as per the specifications of the controls.
3
Are the connections of the
switch correct?
(See the manual for the
controls for the correct
connection details.)
Yes
1. Order a new switch.
2. Replace the switch as described in the manual supplied.
3. Go to the next question.
No
Reconnect the switch.
4
Does the switch still not
work?
Yes
1. Get the service set for the control PCB.
2. Replace the control PCB as described in the manual supplied.
Problem: RF controls not working as expected.
Question
Answer
Action
1
Is the bathroom control
active? (Active = bathroom
switch on or recently on in
last half hour)
Yes
1. If bathroom switch still on: Turn the bathroom switch off.
2. Wait until the timer of the bathroom control has finished. This takes no more than half an hour.
No
Go to the next question.
2
Are the settings of the RF
input programmed as per
the specifications of the
controls?
(See the manual for the
controls for the correct
specifications.)
Yes
Go to the next question.
No
Set the RF SETTING menus as per the specifications of the controls.
3
Is the battery empty (if
present)?
Yes
1. Buy a suitable new battery.
2. Replace the battery as described in the manual for the controls.
No
Go to the next question.
4
Are the RF controls correctly
programmed to the unit?
Yes
Go to the next question.
No
Programme the RF controls to the unit as described in the Section “Programming the RF controls”.
5
Does the switch still not
work?
Yes
1. Remove the electronics cap as described in the section “Access to the control PCB”.
2. Remove the control PCB.
3. Check whether the RF PCB is properly connected to the control PCB.
4. Go to the next question.
6
Is the RF PCB properly
connected to the control
PCB?
Yes
1. Get the service set for the RF PCB.
2. Replace the RF PCB as described in the manual supplied.
3. Go to the next question.
No
1. Connect the RF PCB properly to the control PCB.
2. Follow the procedure for completing the maintenance.
3. Go to the next question.
7
Does the switch still not
work?
Yes
1. Get the service set for the control PCB.
2. Replace the control PCB as described in the manual supplied.
10001047667-0619-zw-zw-A4 ComfoAir E 350 GEN2 Service Zehnder-SI_EN.indd 37
11-07-19 13:31
