Unical KONe R 18 Installation And Servicing Manual

41
Maintenance instructions
ENGLISH
4.6 - ERROR CODES
Thesymbolashesonthedisplaymonitorwhentheboilerdetectsananomaly.
1)Intheeventofananomalythatdoesnotstopboileroperation,presskey‘‘D’’to
displaytheerrorcode;intheeventtheboilerisinstand-by,theerrorcodeappears
andremainsxedonthedisplay.
2)Intheeventofananomalythatcausesboilerdowntime,theerrorcodeashes
directlyonthedisplay.
Eachfaultischaracterisedbyaprioritylevel:iftwofaultsaredetectedatthesame
time,thecodewiththehighestpriorityisdisplayed.Thefaultcodesarelistedbelow:
F)Faultcodedisplayedwithcodenumber:
ThedisplayashesalternatingtheF(FAULT-ANOMALY)witherrorcode(eg23).
( Num ) = see key Par. 2.2
SYMBOL PRIO-
RITY
DESCRIPTION SOLUTIONS
09 0 EXTERNAL PROBE
interrupted
Check the wiring, if needed
replace the external probe
14 1
RETURN PROBE
Auxiliary (SRR) sensor inter-
rupted
Check the wiring, if needed re-
place the auxiliary sensor (22)
45 2
WATER OVERPRESSURE
detected if the H
2
O pressure
Transducer is present with
pressure > 2.5 bar; it is reset
automatically when H
2
O pres-
sure < 2 bar
Wait for the values to return to
default limits /
Replace the Transducer
30 3 SERVICE PARAMETERS
Service parameters altered due
to possible electromagnetic
interferences.
Reset the altered parameters
via the panel and/or regola-
facile
21 4 POOR WATER CIRCULATION
Poor circulation in primary
circuit
Check pump operation (12)
and speed, if there are any
obstructions or system closure.
17 5 FLAME CONTROL FRE-
QUENCY BEYOND LIMIT
Depends on the power supply
mains (Frequency and voltage
beyond default limits)
Wait for the values to return to
the default limits
15 6 WATER CIRCULATION IN-
SUFFICIENT
Primary circuit water circulation
insu󰀩cient (∆t > 35° C)
Check pump operation (12)
and speed - remove any heat-
ing system obstructions - clean
the scaled domestic hot water
exchanger
22 7 INCORRECT SENSOR PO-
SITIONING Flow and return
sensors inverted
Check the wiring (21) (22)
24 8 SPEED OUT OF
CONTROL
Alteration of the fan speed; the
speed is not reached.
Check fan operation (18) and
the connections
COD.REGO-
LAFACILE/
FAULT
HISTORY

Unical KONe R 18 Specifications

General

Brand	Unical
Model	KONe R 18
Category	Boiler
Language	English