Appendix; Fault Codes - Worcester GREENSTAR 29 Installation And Servicing Instructions

Appendix

9 Appendix
9.1

Fault Codes

More detailed fault finding procedures are described in the Service booklet for the Engineer number 7 181 465 346.
Display
code Description
A8 Break in communication
AC Module not detected.
b1 Keyed plug not detected.
C1 Fan speed too low.
d3 Jumper 8-9 not detected.
E2 CH flow NTC sensor defective
E9 Safety temp. limiter in CH flow has tripped.
EA Flame not detected.
F0 Internal error.
F7 Flame detected even though appliance
switched off.
FA Flame detected after gas shut off.
Fd Reset button pressed by mistake.
P1, P2, Please wait, initialisation in progress.
P3, P1...
Table 16
40
Remedy
Check connecting lead to programmer
Check connecting lead between TA211E/
TR212E and Heatronic
Insert keyed plug correctly, test and replace if
necessary.
Check fan lead and connector, and fan; replace
as necessary.
Connector not connected, link missing, under-
floor heating limiter tripped.
Check CH flow NTC sensor and connecting
lead.
Check system pressure, check safety temp. lim-
iters, check external pump operation, check
fuse on pcb, bleed appliance.
Is gas cock turned on? Check gas supply pres-
sure, power supply, igniter electrode and lead,
ionisation sensing electrode and lead, flue duct
and CO level.
2
Check electrical connector contacts, program-
mer interface module ignition leads are not
loose; replace pcb if necessary.
Check electrode assembly, dry pcb. Flue clear?
Check gas valve and wiring to gas valve. Clean
condensation trap and check electrode assem-
bly. Flue clear?
Press reset button again
24 V fuse blown. Replace fuse.
6 720 611 137 GB (03.02)