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F7
IS FLASHING
Flamed detected after appliance switched off.
Order
Control Step
1.
Check ionization electrode
For damaged and/or oxidation
2.
Check if main cable harness is damaged
or not?
3.
Is the gas valve working?
Turn off the appliance
Pull out the gas valve cables
Measure resistances
Of the gas armature safety valves 1
and 2.
R=160±40?
4.
Electronic card is out of order.
6 720 660 238 (2008/07)
Measures
Clean or change
Yes:
Switch on the appliance
Push reset button
If F7 still flashing
No:
2.
Turn off the appliance
Cut the mains supply voltage of the appliance.
Change the cable harnedd
Switch on the mains supply voltage
Turn on the appliance
Push the reset button
If F7 still flashing
Cut the mains supply voltage of the appliance.
Close the gas inlet valve
Change the gas valve
Open the gas inlet value
Switch on the mains supply
Connect cables
Turn on the appliance
Make sure there is no gas leakage
Switch on the appliance and push reset button
If F7 still flashing
Switch off the appliance
Cut mains supply
Change the electronic card
Connect to mains supply
Switch on the appliance
Troubleshooting
ionization electrode
2.
3.
4.
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Do you have a question about the ZWE 24-5 MFA and is the answer not in the manual?
Questions and answers
מה צריך לעשות כשהמכשיר מראה c4
When the Junkers ZWE 24-5 MFA shows error code C4, follow these steps:
1. Check APS hoses: Ensure they are not damaged, blocked, or have condensation.
- If damaged or blocked, turn off the appliance, clean and dry the hoses, then switch it back on.
- If C4 is still flashing, proceed to step 2.
2. Check 20-poled connection cable: Inspect for damage.
- If damaged, change the cable harness and switch on the appliance.
- If C4 is still flashing, proceed to step 3.
3. Check APS functionality: Verify if it is working.
- If APS is not working, further investigation or replacement may be needed.
Following these steps should help diagnose and resolve the C4 error.
This answer is automatically generated