Junkers ZWC 24-3 MFK User Manual

C6 IS FLASHING
Air pressure switch not closing.
Control StepOrder Measure
1. No: ↓2.
Yes:
If C6 still flashing ↓2.
2. Check if air pressure switch hoses are
installed correctly?
Yes: Ø4.
No:
If C6 still flashing ↓4
3.
Yes:
If C6 still flashing ↓4.
If C6 still flashing ↓5.
No: ↓5.
4. C h e c k the mains supply voltage.
Is it < 230 V?
Yes:
No: ↓5.
5. Check if APS is working or not
Yes: ↓6.
No:
If C6 still flashing ↓6.
6. Check if the fan is operating or not? Yes:
If C6 still flashing ↓7.
No: ↓7.
Check flue pipe for any blockage or
wrong installation
Check if APS hoses are damaged or
blocked or check if there is
condensation in hoses?
Turn off the appliance
Clean the flue gas pipe or correct 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
Change fan
Turn off the appliance
Change APS
Switch on the appliance
Turn off the appliance
Clean and dru Aps hose connection points on the
fan
Check if condensation in APS
hose connection points?
| 39Troubleshooting
6 720 660 238 (2008/07)
39

Junkers ZWC 24-3 MFK Specifications

General

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