Junkers ZWC 24-3 MFK User Manual

C1 IS FLASHING
Air pressure switch (APS) opens during operation
Control StepOrder Measure
1. Check flue pipe for any blockage or
wrong installation
installed correctly?
No: ↓2.
Yes:
If C1 still flashing ↓2.
2. Check if air pressure switch hoses are Yes: ↓3.
No:
If C1 still flashing ↓4
3.
6.
blocked or check if there is condensation
Check if APS hoses are damaged or
in hoses?
Yes:
If C1 still flashing? ↓4.
If C1 still flashing ↓5.
No: ↓4.
4. Check if the fan is operating or not?
There is Check if there is condensation
on in APS hose connection points?
Is it 230 V?
Yes:
No: ↓5.
5. Check the mains supply voltage
No:
No:
↓
↓
6.
9.
Yes:
Yes:
If C1 still flashing ↓8.
If C1 still flashing ↓9.
Turn off the appliance
Clean the flue gas pipe or corrent the installation
Switch on the appliance
Turn off the appliance
Correct the assembly of APS hoses
Switch on the appliance
Turn off the appliance
Clean and dry APS hoses.
Switch on the appliance
Turn off the appliance
Clean and dry APS hose connection points on
the fan
Turn off the appliance
Change fan
Turn off the appliance
Change fan cable
Switch on the appliance
Check fan cables for damages?
6 720 660 238 (2008/07)
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36 | Troubleshooting

Junkers ZWC 24-3 MFK Specifications

General

Brand	Junkers
Model	ZWC 24-3 MFK
Category	Boiler
Language	English