Junkers ZWC 21-3 MFA User Manual

d3 X X 38
b1 X X 39
A9 3
4
4
4
2
2
X X 40
FA X X 41
E0, F0
X X 42
Fd X X 42
Error
Code
Category
Error Description
Control Step / Not plugged properly or
Not plugged properly or
bridge is missing
bridge is missing
RSF
OF Page
Tab. 5 Error Codes
Error
Link 161 on St8 is not detected.
(see electrical wiring diagrams
Code plug not detected
DHW NTC is not correctly
installed
After switching off gas flame
detected
Internal error
Reset button pressed accidentally
too long (> 30 secs)
Insert code plug correctly test and
replace it necessory
Check DHW NTC installation location. If
needed dismount and re-install it.
Check ionization electrode and gas valve
Check electrieal connections, ignition
cable connection, if needed,replace pcB.
Push reset button again
30 | Troubleshooting
6 720 660 238 (2008/07)
30

Junkers ZWC 21-3 MFA Specifications

General

Brand	Junkers
Model	ZWC 21-3 MFA
Category	Boiler
Language	English