HAMWORTHY HEATING LTD
35
MILBORNE
500001130/J
1.
The display starts flashing to signal one or
more faults.
2.
Press S4 (+): the display will alternate between
the address of the first unit (boiler module) and
the first error code.
Press S4 again (+) to display all the errors for
this unit (boiler module).
The error of the successive unit (boiler module)
will be visualized one after the other, press S4
(+).
Press S5 (-) to display the errors in the oppo-
site way, from the last to the first unit (boiler
module)
(e.g. unit [boiler module] 2 error code E 05.
Fault can be either E codes or A codes.
If errors derive from the Master, they will be
displayed (before the other errors) as U 00 +
error code. The Master controller always has
addresses U 00.
See error list for codes and re-
lated faults
Procedures Display
Button Required
3.
Press S2 (SET/ ESC) to exit ‘errors’ and go
back to display mode.
Figure 8.6.1
Figure 8.6.3 Master control permanent lock-out errors (A) - manual reset
Display Nr
PC Nr
Fault
Action
A16
10
Internal E2PROM error
Reset, check and replace Master board
A18
12
Internal communication error
Reset, check and replace Master board
