Junkers ZWC 24-3 MFK User Manual

EA IS FLASHING
Flame not detected
Control StepOrder Measure
1. Check if Ionization electrode detect the
flame or not?
No:
No:
No:
No:
No:
No:
2. Is the gas inlet valve open?
Yes:
Yes:
Yes:
Yes:
Yes:
Yes:
If EA still flashing
3. Is there air in the gas line?
If EA still flashing
4.
Is EA flashing?
5.
If EA still flashing
If EA still flashing
Is the thermal shutdown valve
triggered?
Natural gas:
Is there any gas pressure regulator at
the house entrance?
LPG (liquid gas):
Is there sufficient gas flow in the
LPG line to operate appliance?
Open the gas inlet valve.
Push the reset button and switch on the appliance
again.
Untighten gas inlet measurement point screw on the
gas value
Remove the air from gass line
Tighten gas value inlet meassurement point screw
Switch on the appliance and push reset button
Change thermolshutdown valve
Push the reset button and turn on the appliance again.
Check if the montage of the gas pressure regulator
assembly is correct or not?
If necessory correct it.
Measure the gas inlet pressure. If there is a deviation
inform the gas distributor company.
Push the reset button and turn on the appliance again.
Is the tank full enough?
Is there any air in the gas pipe?
Is the external tank magnet valve tripgered?
Is the gas entry pressure OK? ( if too high check the
regulator)
Correct the devistions
Turn on the appliance again
Push reset button
46 | Troubleshooting
6 720 660 238 (2008/07)
46
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Junkers ZWC 24-3 MFK Specifications

General

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