108
8
System Operation
Fault
Code
No.
Restart according to
Description
TRD
EN676
997
>88
3
Default language missing or LANGUAGE-FLASH defect
Fault during an internal self-test.
Reset the fault; switch the mains voltage off and on again if necessary.
Check all fuses in the device.
If fault messages are constantly appearing one after the other
exchange the
device or respective card.
998
0
0
Internal fault: main loop is too slow.
H/Ü
Fault during an internal self-test.
Reset the fault; switch the mains voltage off and on again if necessary.
Check all fuses in the device.
If fault messages are constantly appearing one after the other <Symbol For-
mat="Symbol">
→
</Symbol> exchange the device or respective card.
999
0
0
Internal fault Number -
H
The internal procedure is faulty, and the additional number indicates the position of
the fault within the firmware.
Internal fault number 2:
This fault is triggered by the watchdog processor, when these do not match with the
burner sequencer’s behaviour of the main processor.
Possible cause:
The HP activates the maintenance mode without any permission
The HP changes into a mixed operation without any permission
Internal fault number 3:
If the fault occurs once, it may be caused by EMC interference.
If the fault occurs often, the processor pc board is defective.
Internal fault number 4:
The monitoring processor has not detected a signal change at the "Air pressure
monitor" input. This can occur if the "Air pressure monitor" input is present at
BURNER START and is only briefly deactivated. This fault occurs frequently when
the fan is started by an external control system.
ETAMATIC:
Before A4a4002: the "Air pressure monitor" input appears during the TRIAC self-
test before the fan output is actuated by ETAMATIC!
Internal fault number 7:
This fault occurs when the "Burner On" and "Pre-venting" signals occur in the wrong
order or too quickly in sequence during the postpurge time in the case of devices
without a burner sequencer (VMS / ETAMATIC V).
No fault occurs if the devices switches to the "Ready" (BE) mode downstream of the
"Burner On" input before the "Pre-venting" signal is sent.
Internal fault number 22:
A fault occurred during the assumption of the curve in the EEPROM.
Check the curve. Re-enter if required. This fault is possible only in connection
with the programming unit!
Fault during an internal self-test.
Reset the fault; switch the mains voltage off and on again if necessary.
Check all fuses in the device.
If fault messages are constantly appearing one after the other
exchange the
device or respective card.
Summary of Contents for VMS 4
Page 2: ......
Page 119: ...118 10 Appendix...
Page 129: ...128 10 Appendix Fig 10 9 Ger t 4 Ger t 5 with output regulator...
Page 141: ...140 10 Appendix 10 14 Declaration of Conformity...
Page 142: ...141 10 Appendix...
Page 143: ...142 10 Appendix 10 15 Protocol Example...
Page 144: ...143 10 Appendix 10 16 O2 Setpoint Curves...
Page 145: ...144 10 Appendix...
