A2
and later
C3
is flashing
Flue gas leakage from combustion chamber
Control
S
tep
Order
Measure
1.
Yes:
↓
2.
No:
↓
3.
2.
Yes:
Is A2(C3) flashing?
↓
3
No:
↓
3.
Is there temperature increase under
burner or on combustion chamber
Check if combustion chamber
temperature NTC is less than
specified below table
Enter the service function AF
Combustion chamber flue gas
temperature will be displayed on Ht3
Measure CO and check if it is in limits
Check and correct flue gas pipes installation
Measure draft (must be > 0,015 mbar)
Check and correct wind protection installation
Appliance
Code plug no
Limit combustion chamber
NTC temperature in CH mode
In DHW mode
ZWE 24/28-5
MFK
ZWC 24-3
MFK
ZWC 24/28-3
MFK
(dual output)
ZWC 28-3
MFK
ZWC 18-3
MFK
1502/1512
1503/1513
1506/1514
1507/1515
1510
1511
1516
1517
1518
1519
150
150
150
165
165
196
196
196
196
132
132
150
165
165
180
180
196
196
132
132
32
|
Troubleshooting
6 720 660 238 (2008/07)
32
2
Summary of Contents for ZWC 18-3 MFK
Page 1: ......
Page 11: ...Fig 8 6 720 660 238 2008 07 11 11 Appliance Layout and Hydralic Diagrams 2 2 2 ZWE 24 5 MFK...
Page 26: ......
