HAMWORTHY HEATING LTD
MILBORNE 500 SERIES
500001130/A
35
16.5 Boiler Module Error Messages
The following tables display the boiler module error messages. These messages relate to faults that can occur
within the individual boiler modules.
Errors can be divided into two groups; lock-out errors which can be automatically reset (E errors) and permanent
errors (A errors) which must be reset just by pressing the reset button.
16.6 Boiler Module Permanent Errors, A Errors (Permanent Lockout)
A01
5 failed attempts of starting up (5 sec pre-purge / 5 sec. ignition)
A02
Too many failed ignitions
A04
GK relay open error
A05
GK relay not open error or Phase neuter are inverted
A06
Safety relay does not close
A07
Safety relay does not open
A08
Safety relay open while closed expected
A09 RAM
error
A10 E2prom
error
A11 Fan
error
A12
Wrong e2prog signature
A13 Stack
error
A14 Internal
control
error
A15 Internal
control
error
A16
Safety relay closed while open expected
A17
Flow temp. error. Max flow temperature was overcome (see option selected on Parameter 71)
A18
Return sensor error. max return temp. was overcome (see option selected on Parameter 71)
A19
Flue sensor error (fan will run at max. speed)
A20
Flame turned off too late after the gas valve was closed)
A21
A22
A23
A24 Fan
error