Robur K18 Hybrigas, Installation, Use And Maintenance Manual, Page: 55 / 60

Diagnostics
Installation, use and maintenance manual – K18 Hybrigas
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CODES DESCRIPTION Warning (u) Error (E)
424 Flue gas temperature probe fault Reset is automatic up to 5 attempts.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 49.
If the code persists, shows up again or in case of doubt, contact
the TAC.
425 Clogged condensate drain NA
Check and clean condensate discharge.
Reset occurs automatically when the condition that has generat-
ed the code ends.
It is also possible to make the reset following one of procedures
shown in Paragraph 6.6.1 p. 49.
If the code persists, shows up again or in case of doubt, contact
the TAC.
426 Generator fins temperature probe fault Reset is automatic up to 5 attempts.
The reset may be done following one of procedures shown in
Paragraph 6.6.1
p. 49.
If the code persists, shows up again or in case of doubt, contact
the TAC.
430
High flue gas or generator fins
temperature
Reset is automatic when the triggering
condition ceases.
The reset may be done following one of procedures shown in
Paragraph 6.6.1
p. 49.
If the code persists, shows up again or in case of doubt, contact
the TAC.
435 Gas valve temperature probe fault
Reset is automatic when the the func-
tioning probe is restored.
NA
436 Blower fault
Reset occurs automatically 20 minutes
after the code is generated.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 49.
If the code persists, shows up again or in case of doubt, contact
the TAC.
438 Internal flame controller error
Reset occurs automatically 10 seconds
after the code is generated.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 49.
If the code persists, shows up again or in case of doubt, contact
the TAC.
439 Fan fault
The system tries to resolve the anomaly
once; if not successful, warning 461 is
generated.
NA
440 Oil pump inverter fault
Reset is automatic when the triggering
condition ceases.
NA
441 Parasitic flame lockout NA
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 49.
If the code persists, shows up again or in case of doubt, contact
the TAC.
442 Flame loss
Reset occurs automatically 10 seconds
after the code is generated.
NA
443 Flame controller communication error
Reset is automatic when the triggering
condition ceases.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 49.
If the code persists, shows up again or in case of doubt, contact
the TAC.
444 Evaporator temperature probe fault NA
The reset may be done following one of procedures shown in
Paragraph 6.6.1
p. 49.
If the code persists, shows up again or in case of doubt, contact
the TAC.
446 High hot water inlet temperature
Check configuration of other heat
generators on the system.
Ensure the secondary circuit pump is
working.
Ensure the exchange terminals are
active.
Check any by-passes between outlet
and inlet.
Reset is automatic and occurs if the
generating condition ceases with
circulating pump on or 20 minutes after
the code is generated with circulating
pump off.
NA
447
Hot water inlet temperature below
operational limits
Reset occurs automatically when the
generating cause resolves or 430 sec-
onds after the code is generated.
Reset occurs automatically when the condition that generated
the code ceases.
If the code shows up again or in case of doubt contact the TAC.
448 High hot water differential temperature
Check cleanliness of water filters.
Check water flow.
Reset occurs automatically 20 minutes
after the code is generated.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 49.
If the code shows up again or in case of doubt contact the TAC.
460 Defrosting valve has failed to open
Non-blocking event.
Reset is automatic, however, it is advisa-
ble to contact the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 49.
Contact the TAC.
461 Fan fault
Generated as a result of a failed attempt
are restoring warning 439; it is resumed
once the generating cause is resolved.
If the code persists, contact the author-
ized TAC.
NA
473
Manifold probe fault (connected to
AUX 2)
Reset is automatic when the triggering
condition ceases.
NA
474
Manifold probe fault (connected to
AUX 1)
Reset is automatic when the triggering
condition ceases.
NA