ahlsell ENERGY FLEX SKP 20 User manual

SKP 20
LCD TERMINALS
User manual for ENERGY FLEX
ENGLISH

SKP 20

3 SKP 20
INDEX
USER INTERFACE
1.1 Keys 4
1.1.1 Description of keys 4
1.1.2 Description led utilities 4
1.1.3 ICONS: States and Operating Modes 5
1.1.4 Icons and Double Display 5
1.1.5 Double Display 5
1.2 Hot keys 5
1.2.1 Local On/O 5
1.2.2. Controler ”On” ”OFF” 5
1.2.3 Controler “OFF”“On” 5
1.2.4 Manual alarm acknowledgment and reset 6
1.3 First power on 6
1.3.1 Access to folders - menu structure 6
1.3.2 Main display Menu 6
1.3.3 “Operating Mode”Menu 7
1.3.4 Setting the clock (CL) 7
1.3.5 Alarm Display (AL) 8
1.3.6 Example of how to set the setpoint (SP) 8
1.3.7 Reset compressor/pump time 9
1.3.8 Parameters (folder PAr) 9
1.3.9 Setting a password (Par/PASS folder) 10
1.3.10 Alarm events (Par/EU folder) 10
DIAGNOSTICS
2.1 Alarms 12
2.1.1 Automatic reset 12
2.1.2 Manual reset 12
2.1.3 Alarm mute 12
2.2 Digital alarms 12
2.3 Analogue alarms 13
2.4 Alarms table 13
2.4.1 Alarm table key 13
2.4.2 Alarms table 14

4 SKP 20
1. User interface
1.1 Keys
1.2 Functions description
Preliminary precautions
• Thecontrolpanelallowsyoutomakeallthenecessaryadjustmentstothechilleroperationandtoviewthevaluesofthe
mainparametersandalarms.Thecontrolpanelislocatedonthefrontpaneloftheelectricalboard.
1.1 Keys
Theinterface,comprisingthefrontcoverofthecontroller,allowsyoutoperformalloperations
needed to use the device.
Theterminalsarethesameandareinterchangeable–seetable.
• SKW22(L)Thereare4keysonthefrontcoverofthecontroller.
• SKWP22(L)Thereare5+3keysonthefrontcoverofthecontroller.
Each key has (see the two tables below)
• Adirectaction(shownonthekeyitself).
• An“associated”function(forSKW22(L):markedwithanicononthefrontpanelofthetermi-
nalbesidethekey).Inthemanual,thisisshowninsquarebrackets(e.g.[UP])
• A combined action using 2 keys. In the manual, this is shown in square brackets
(e.g.[UP+DOWN])
1.1.1 Description of keys
1.1.2 Description led utilities
Icons associated with utilities are all congurable. From the factory device is set to the table:
Key Press once
(press and release)
Long press
(press and hold for about 3 seconds)
1
Increase a value.
Go to next label.
See also F1
[Activatemanualdefrost]
See the Functions menu (folder FnC).
2
Decrease a value.
Go to previous label.
See also F3
[Machineactive→OFF]
[OFF→machineactive]
See Local On/OFF section.
See also Functions menu.
(FnC folder)
3
Conrm value / exit and save new settings.
Move to next level
(openfolder,subfolder,parameter,value).
Open State Menu.
Open Edit Mode
(Main display)
See Main Display section.
4
Exit menu page / go back to previous menu.
Move cursor to left in Edit Mode.
(press and hold)
Exit Edit Mode without saving.
See also F2
(Mode Change)
See section on Changing operating mode.
5 Open Programming menu /
Tasto Pressione singola
(premi e rilascia)
Pressione prolungata
[premi per 3 secondi circa]
Note
[F1+F3] / [Riarmomanualedegliallarmi]
F1
/ [Attivasbrinamentomanuale] VediTastoUP
pressione prolungata
F2
/ [Cambiomodo] VediTastoesc
pressione prolungata
F3
/
[MacchinaattivaOFF]
[OFFmacchinaattiva]
VediTastoDOWN
pressione prolungata
<IMGINFO>
1 Compressor 1
2 Compressor 2
3
Sanitary water
4 Boiler
5
Exchanger electric heater
6 Fan-coil
7Waterpump
1234567

5 SKP 20
ICONS
States and operating
modes
Icons Description Permanently on Flashing
Alarm Active alarm
Alarm acknowledged
Economy
Congurable
----
Ui /dS folder
Parameters
UI07 /dS00
Congurable
----
Ui /dS folder
Parameters
UI07 /dS00
Display B shows the value/
resource set
for the“main display”.
If there is an alarm:
Display A shows the alarm
code Exx.
(when more than one alarm
occurs at
thesametime,theonewith
the lowest
number will be shown rst).
Display B shows“- - -”if the
alarm is a
probe alarm referring to the
value set
for the main display.
Not used
Clock(RTC) Shows current time
(24hr format).
Set time
Stand by Local standby mode
(from keyboard) Remote standby
Heating Heating mode
Antifreeze with heat
pump active
Remote heating mode
Cooling Cooling mode Remote
cooling mode
Not used / /
AUTO Not used / /
ICONS
States and operating
modes
ICON
symbols
on display
ICONS Default
Default icon
on front
panel
ICON 1
(rst from top
on the left)
Menu navigation
(ABC)
ICON 2 Manual defrost
Icons are associated with menu navigation and manual defrost.
Thefactorysettingsofthecontrollerarelistedinthetable:
1.1.5 Double LCD
Whichwewillrefertoasfollows:
Thedouble display has 26 icons:
• Statesandoperatingmodes-9icons
oBrowsemenu/manualdefrost–2icons
• Valuesandunitsofmeasure-4icons
• Utilities-7icons
• Fans-4icons
Read-outs can have up to
• Display A: 4 digits or
• Display B:2andahalfdigitsand+/-sign
Note:
• Icons are all grey in colour.
• Some icons are NOT used – are shown on a grey background.
Display Display A Display B
4-gure
read-out
Read-out
with 2
and a half
digits and
+/-sign
1.2 Hot keys
1.2.1 Local On/OFF
1.2.2 Controller “On”“OFF”
Pressthe[DOWN]keyforabout3secondsfromthe
main display.
ThewordOFFwillappearonthedisplay.
All other icons will remain o.
1.2.3 Controller “OFF”“On”
ThewordOFFappearsonthedisplay.
Pressandholdthe[DOWN]keyforabout3seconds.
Energy Flex will return to the normal display.
1.1.3 ICONS: States and Operating Modes
1.1.4 Icons and Double Display
he13iconsonthefrontpanelindicateassociated/combinedfunctions(6icons)+defaultutilities
(7 icons).

6 SKP 20
1.3.1 Access to folders - menu structure
Folders are organized into menus.
Access to said folders is dened by the keys on the front cover (see relative paragraphs).
Intheparagraphsthatfollow(orchaptersindicated),wewillexplainhowtoentereachindividualmenu.
Thereare4menus:
•MainDisplayMenusee the“Main Display Menu”chapter.
•OperatingModeMenusee the“Operating Mode Menu”chapter.
•StatesMenusee the“States Menu”chapter.
•ProgrammingMenusee the“Programming Menu”chapter.
Thereare4folders/sub-menusintheProgrammingMenu:
•ParametersMenu(folderPar)see Energy FLEX manual Parameters Chapter.
•FunctionsMenu(folderFnc)see Functions chapter.
•PasswordPASS
•EUalarmcodes
All menus and labels are listed in the table below:
1.3.2 Main display Menu
“MainDisplay”meanswhatthecontrolleronthedefaultdisplayscreen,i.e.whennokeyshavebeen
pressed.
Modifying the main display
InEnergyFLEX,themaindisplaycanbecustomizedtosuitpersonalrequirements.Thevariouscon-
tentscanbeselectedfromthe“disp”menuwhichisopenedbypressingandholdingthe[set]keyfor
morethan3seconds.Themaindisplay canbeselectedfrom:
1.3 First power on
MENU
Main Display
(Display B)
Note:
Display A always
shows
the clock.
Ai AIL1 AIL1 AIL1 AIL1 AIL1 Air1 Air2
di diL1 diL2 diL3 diL4 diL5 diL6
...
...
Sr
Hr
Operating mode
HEAt
COOL
StdBY
States
Ai
di
...
CL HOu dAt YEA
...Hr CP01 CP02 CP03 CP04 PU01 PU02 PU03
PROGRAMMING
MENU label
Parameters
PAr
CL CL00...
CF CF01...
... ...
AL ALOO...
Functions
FnC
dEF
tA
St OFF/ON
CC UL dL Fr
EUr
Password PASS
EU EU
WhenEnergySKW22(L)ispoweredonfortherst
time,alamptestiscarriedouttocheckitsstateand
operation.
----------
TheLampTestlastsforjustafewseconds.During
thisshorttime,alliconsanddigitsashatthesame
time.
Afterthelamptest,thefollowingare
displayed (depending on the default
settings):
Display A
•Thetime(always**)
Display B
•Realsetpoint
•Parametersetpoint
•Thevalueoftheanalogueinputselected
(AIL1…AIL5,Air1,Air2).
----------
Intheexample,themaindisplayis:
DisplayA:currenttime(RTC**)
DisplayB:parametersetpoint(+12°C)
Intheexample,thecurrenttimeisthemaindisplay
(RTC).
Note that in this case Display is o (display A shows
the time).
**N.B.Thetimewillbeshownonmodels/C,i.e.
thosewiththeRealTimeClock(RTC)installed.
1.2.4 Manual alarm acknowledgment and reset
Alarmsignalsaredisplayedasashing.Belowisanexplanationofhowtoacknowledgeanalarm.
ThevariouserrormessageswillbeshowninfolderAL(seeStatesMenu).
ALARM/ERRORACKNOWLEDGMENT
An error can be acknowledged by pressing any
key once.
Afterpressinganykey,thealarmiconwillstart
to blink.
MANUALRESET
Tomanuallyresetanalarm,pressthe“up”and
“down”keystogether[UP+DOWN]
- - - - - - - - -
N.B.: resetting an active alarm will save the alarm
in the alarm log.
Thedevicewillreturntothemaindisplay.
1
Anerrormessagewillbeshown,
alternating with the error alert (2)
and the main display (1).
TheALARMiconwillbepermanentlyon.
2

7 SKP 20
•AnalogueinputsAiL1,AiL2,AiL3,AiL4,AiL5,(whenconguredasdigitalinputs,thedisplaywillbe
dened on the basis of the state and logical parameter - digital input associations).
•Set-point
o SP= set from parameter.
o Sr= real with any decalibration.
A step by step account of how to proceed is provided below.
1.3.3 “Operating Mode” Menu
Changing the operating mode
Therearethreedierentoperatingmodes:
• Stand-by(StbY)mode
• HEATmode
• Coolingonlymode(COOL)
1.3.4 Setting the clock (CL)
EnergyFLEXhasaclock(RTC)torunthealarmlog,justlikeaprogrammabletimerthermostat.
Wewillnowshowyouhowtosetthetime:
you will also use the same procedure to set the date and year.
Toopenthe[disp]menutomodifythemain
displaysetup,pressandholdthesetkeyforat
least 3 seconds.
[set]
Opens the blinking menu for the previous display
(SEtP,i.e.SetPointfromparameter,inthiscase).
Tomodifythedisplay,usethe“up”and“down”
keys to browse the menu.
On selection of your preferred display (AiL1 in
thiscase),pressthesetkeytoconrm.
You will be automatically returned to the
precongured main display.
InthiscaseAiL1,withavalueof7.5°C
Forexample,let’ssayyouwanttochange
from StbY to COOL mode.
Tochangeoperatingmode,pressandholdthe
[esc]keyforatleast2seconds.
A blinking menu will open containing the values
StbY(standby),HEAt(heat)andCOOL(cool)
thatyoucanscrollusingtheDOWNkey.
---
Selectyourrequiredoperatingmode(COOLin
this case) and press the set key.
You will be automatically returned to the main
display and you will see that the Stby icon that
was previously on has gone o and the COOL
icon has come on.
Tochangethetimeonyour
machine,startingfromthemain
display,pressthesetkey.
Press the key once to view the
various folders.
Usethe“UP”and“DOWN”keys
to nd the CL folder.
Press the set key to open the CL menu.
1
Onceyouareinthismenu,you
will see the HOUr label on
Display B.
Usethe“UP”and“DOWN”keys
(1-2-3) to select the
- - -
Pressthe[set]key**toopenthe
menu you want to modify.
TheHOurlabelwillreappearon
Display B.
Display A will blink.
Press and hold for
2
Entra in menu modica

8 SKP 20
1.3.5 Alarm Display (AL)
1.3.6 Example of how to set the setpoint (SP)
Forexample,wewillmodifythesetpointinCOOLmodefrom12.0degreescentigradeto12.5de-
grees centigrade.
Setpoint edit function enable from main screen
Parameter Ui25 allows you to enable Set Point modication on the main display with the UP and
DOWNkeys.Forexample,wewillmodifythesetpointinCOOLmodefrom12.0degreescentigrade
to 12.5 degrees centigrade.
Parameter UI25=1 (folder Par/Ui/UI25) must be set.
See Parameters section (folder PAr)
Press the set key from the main display.
Label Ai appears on the display.
UsetheUPandDOWNkeysto
browse the other labels until you nd
the AL label.
Press the set key to view the label of
the rst active alarm (if it exists).
Inthiscase,therstalarmisEr01.
Scroll using the“up”and“down”keys
to nd other active alarms.
-------------------------------------
N.B.: the menu is not cyclical.
Forexample,iftheactivealarmsare
ER01,Er02andEr03,thedisplaywillshow:
Er01 ->Er02->Er03 <-Er02<-Er01
NOTE:->UP,<-DOWN
Press the esc key to go back to the
main display.
Tochangethesetpointonyour
machine,startingfromthemain
display,pressthesetkey.
Let’ssaywewanttochangetheCOOLmode
setpoint.
ThedevicemustbeinCOOLmode
(or in StdBy mode from COOL).
TochangethesetpointoftheHEATmode,
proceed in the same way by rst changing the
device”smodefromCOOLtoHEAT
See Operating Mode Menu chapter.
Tochangethesetpointonyourmachine,press
theUPorDOWNkeyinthemaindisplay
Label Ai appears on the display.
UsetheUPandDOWNkeysto
scroll the other labels until you
nd the SP label
Press the set key to open the SP
menu.
TherstdisplaywillbeCOOL
mode,andthenscrollingwiththe
UPandDOWNkeys,theHEAT
mode (the various displays are
shown at the side).
Let’ssaywewanttochangethe
COOL mode setpoint.
Press the set key beside the COOL
label.
Thedevicewillshowthecurrent
setpointofthemachine,whichis
12.0 degrees centigrade in this case).
- - -
Toincreaseordecreasethis,press
the“up”and“down”keys. For
example,ifyouwanttochange
thesetpointto12.5degrees,press
the“up arrow”key until you reach
therequiredvalue.
- - -
Torepeattheprocedurein
reverse until you get back to the
maindisplay,presstheesckeyor
wait for the 15-second timeout to elapse.
Change time/date/day menu
Note: Display A blinks.
Usethe“UP”and“DOWN”keys
toselectthetime,dateoryear.
Once you have decided what you
want to set (for example the
time),pressthesetkeyagainto
open the modication menu for
the variable selected.
- - -
Tosetthetime(thesame
procedure applies to the date
andyear),usethe“UP”and
“DOWN”keystoenterthe
requiredvalueandpressthe
- - -
Toexitthesettimemenu,press
the esc key until you are returned
to the main display.
Change time

9 SKP 20
Thedevicewillshowthecurrentsetpointofthe
machine,whichis12.0degreescentigradeinthis
case).
Toincreaseordecreasethis,pressthe“up”and
“down”keys again.
Forexample,ifyouwanttochangethesetpoint
to12.5degrees,pressthe“uparrow”keyuntil
youreachtherequiredvalue.
Onreachingtherequiredvalue,pressthesetkey.
Thedevicewillsavethevalue12.5.
Press the esc and set keys together to open the
parametersmenu.ThiswillopenthePArmenu.
ThePArparametersmenucontainsallcontroller
parameters. Press the set key to view folders.
TherstfolderthecontrollershowsistheCF
conguration folder.
Simply press the set key again to modify individual CF
parameters.
ThecontrollerwillshowparameterCL00(factory
default settings).
Press the“up”key to scroll through the various
parameters or move to the next parameter (CL01 in
this case) or the“down”key to go back to the previous
parameter (CL97 in this case)
CL00->CL01->CL02->…->CL97->CL00
CL97<-CL00<-CL01->…<-CL96<-CL97
NOTE:->UP,<-DOWN
Press the set key to change the value of the parameter
(CL01 in this case).
Press the“up”and“down”keys to change the value of
the parameter (CL01 in this case).
Onselectingavalue,pressthesetkey.**
Toexitthisdisplayandreturntothepreviouslevel,
press the esc key.
**N.B.pressingthesetkeyconrmsthemodied
value; pressing the esc key returns you to the previous
level without saving the new value entered.
Example display and reset hours
for Pump 1.
Press the set key from the main
display.
Label Ai appears on the display.
UsetheUPandDOWNkeysto
scroll the other labels until you
nd the Hr label.
Press the set key to view the rst
label - which in this case is the
running time for compressor 1
(CP1)
ScrollwiththeUPandDOWNkeys
to view (if the relative resources
are present) the running time for
compressor 1 (CP1) the the pump
running time (PU1)
Therunningtimeis5hours.
ToclearpumpPU1runningtime,
pressandholdthe[set]key.
-------------------------------------
Press the esc key to go back to the
main display.
1.3.7 Reset compressor/pump time
1.3.8 Parameters (folder PAr)
Modifying a parameter
Instructionsareprovidedbelowonhowtochangeamachineparameter.Bywayofexample,let’s
lookattheCFcongurationparametersfolder,parameterCF00(folderPAr/CF/CF00).

10 SKP 20
ToviewfolderPASinthemaindisplay,presstheEsc
andSetkeysatthesametime.[esc+set]
Pressing the two keys will open the menu containing
the list of folders. Use the“up”and“down”keys to
scroll the list until you nd the PAS folder.
Press the set key to open the PAS folder.
Enterthepassword(installerormanufacturer),
(password=1intheexample)fromhere,pressthe
set key and exit.
Now open and view parameters to change a value
(see parameters section in the Energy FLEX manual)
Alarm code Er
Therstlabelwillbeshown
(alarmcode,inthiscaseEr01)
UsetheUPandDOWNkeystoscroll:
Alarm start time Hi
(20:08 in this example)
Alarm start date
(20 May in this example)
Alarm stop time HO
(alarm still active in this case)
Alarm stop date dO
(alarm still active in this case)
TypeofalarmtY
(automatic AUtO)
or alternatively
(manual ManU)
ToviewthePASSfolderinthemaindisplay,
press the Esc and Set keys at the same time.
[esc+set]
Pressing the two keys will open the menu
containing the list of folders. Use the“up”and
“down”keys to nd the EU folder.
Press the set key to open the PAS folder.
Press the set key again to view details of the
selected event (EU00 in this specic case).
1.3.9 Setting a password (Par/PASS folder)
Toviewparametersvisibleforthegivenpassword,openfolderPASS(pressescandsettogether
[esc+set]fromthemaindisplayandsearchthefolderusingtheup/downkeys)andsetthePASS
value.
1.3.10 Alarm events (Par/EU folder)

11 SKP 20

12 SKP 20
2. Diagnostics
2.1 Alarms
2.2 Digital alarm
2.3 Analog alarms
2.4 Alarm table
Preliminary precautions
• Thecontrolpanelallowsyoutomakeallthenecessaryadjustmentstothechilleroperationandtoviewthevaluesofthe
mainparametersandalarms.Thecontrolpanelislocatedonthefrontpaneloftheelectricalboard.
The“EnergySBA600”performsfullinstallationdiagnosticsandreportsavarietyofalarms.
Parameters for alarm activation and resetting can be viewed and congured in folder
AL (parameters AL00…AL82) (see User Interface and Parameters section).
2.1.1 Automatic reset
Forautomaticresetalarms,normaloperationisrestoredassoonasthecauseofthealarmhasbeen
removed.
2.1.2 Manual reset
Alarmscanbemanuallyresetbypressingandreleasingthe[UP+DOWN]keys
Normal operation can only be reset
• bypressingakeyontheinstrumentkeyboardand
• onlyifthecauseofthealarmhasbeenremoved.
2.1.3 Alarm mute
Alarms can be acknowledged by pressing any key.
acknowledging an alarm has no eect on the alarm generated other than on the alarm
LED,whichgoesfromxedtoashing.
An alarm has two eects:
• Itblockstheservicesconcerned
• Messageonthekeyboarddisplayalternateswithamessageonthemaindisplay.
Thenexttwosectionssummarizealarmsgroupedbytype(digitaloranalogue).
Alarm code and alarm parameters are in bold (folder PAr/AL)
2.1 Alarms
Alarm code
Name of alarm
Bypass activation
event
Bypass time
Automatic alarm
activation time
Manual alarm
activation
time
Exit alarm
deactivation time
Number of interventions
per sample time
E001
Circuit 1
high pressure
alarm
None Not
present
Not
present
Not
present
Not
present AL10
E002
Circuit 2
high pressure
alarm
None Not
present
Not
present
Not
present
Not
present AL10
E005
(NOTA 4)
Circuit 1
low pressure
alarm
Circuit
compressor
activated
or reversal
of 4-way valve
(NOTE1)
(NOTE4)
AL11
(NOTA4)
Not
present
Not
present
Not
present AL12
Alarm code
Name of alarm
Bypass activation
event
Bypass time
Automatic alarm
activation time
Manual alarm
activation
time
Exit alarm
deactivation time
Number of interventions
per sample time
E006
(NOTA 4)
Circuit 2
low pressure
alarm
Circuit
compressor
activated
or reversal
of 4-way valve
(NOTE1)
(NOTE4)
AL11
(NOTA4)
Not
present
Not
present
Not
present AL12
E020
(NOTA 2)
Primary circuit
flow switch
alarm
Internal circuit
pump activation
(One of the two
pumps)
AL14 AL15 AL16 AL15 Not
present
E025
(NOTA 3)
Primary circuit
pump thermal
switch alarm
External circuit
pump activation AL17 AL18 AL19 AL18 Not
present
E010
Compressor 1
thermal switch
Compressor 1
switched on AL20 Not present
Not
present
Not
present AL21
E011
Compressor 2
thermal switch
Compressor 2
switched on AL20 Not present
Not
present
Not
present AL21
E012
Compressor 3
thermal switch
Compressor 3
switched on AL20 Not present
Not
present
Not
present AL21
E013
Compressor 4
thermal switch
Compressor 4
switched on AL20 Not
present
Not
present
Not
present AL21
E015
(NOTE 2)
Compressor 1 oil
pressure switch
Compressor 1
switched on AL22 Not
present
Not
present
Not
present AL23
E016
(NOTE 2)
Compressor 2 oil
pressure switch
Compressor 2
switched on AL22 Not
present
Not
present
Not
present AL23
E017
(NOTE 2)
Compressor 3 oil
pressure switch
Compressor 3
switched on AL22 Not
present
Not
present
Not
present AL23
E018
(NOTE 2)
Compressor 4 oil
pressure switch
Compressor 4
switched on AL22 Not
present
Not
present
Not
present AL23
Er40
Primary exchanger
fan thermal switch
None Not
present
Not
present
Not
present
Not
present AL24
Er41
External exchanger
fan thermal switch
Circuit 1
None Not
present
Not
present
Not
present
Not
present AL25
Er42
External exchanger
fan thermal switch
Circuit 2
None Not
present
Not
present
Not
present
Not
present AL25
E021
Primary circuit
pump 1 thermal
switch
None Not
present
Not
present
Not
present
Not
present AL26
2.2 Digital alarms

13 SKP 20
(NOTE1) Thebypassisactivatedbythereversalofthe4-wayvalveonlyifatleastonecompressor
is on
(NOTE2) Thealarmisenabledonlyiftheassociatedresource(e.g.agivencompressororpump)
is active
(NOTE3) Thealarmisenabledonlyiftheassociatedresource(e.g.speciccompressororspecic
pump) is active only in heating mode.
(NOTE4) Thealarmisenabledonlyiftheassociatedresource(e.g.speciccompressororspecic
pump) is active only in heating mode. Low pressure digital alarm related to dedicated
circuitisnotactiveifPump-downvalveoftherelavantcircuitisactive(valveclosed,
Pump-downongoing,andafterCP33timeafterdesactivation)
(NOTE1) IfNo.trips=1,thealarmisalwaysmanualresettype.
(NOTE2) Alarmbypassisactiveinheatingmodeonly.
(NOTE3) Anosetof6°C(valuecannotbechanged)isaddedtotheactivationsetpointAL51
during the defrost stage.
Alarm code
Name of alarm
Bypass activation
event
Bypass time
Automatic alarm
activation time
Manual alarm
activation
time
Exit alarm
deactivation time
Number of interventions
per sample time
E022
Primary circuit
pump 2 thermal
switch
None Not
present
Not
present
Not
present
Not
present AL26
E026
Disposable circuit
pump thermal
switch
None Not
present
Not
present
Not
present
Not
present AL27
E050
Primary exchanger
electric heater 1
thermal switch
None Not
present
Not
present
Not
present
Not
present
Not
present
E051 Primary exchanger
electric heater 2 None Not present
Not
present
Not
present
Not
present
Not
present
E056 Auxiliary output
alarm None Not present
Not
present
Not
present
Not
present
Not
present
2.4 Alarms Table
Alarm code
Name of alarm
Bypass activation event
Bypass time
SETactivation
Hysteresis
Automatic alarm time
(NOTE1)
No. of trips
Control Probe
E003
Circuit 1
analogue
high pressure
alarm
None None AL40 AL41 Not present AL42
Circuit 1
high pressure
probe
E004
Circuit 1
analogue
high pressure
alarm
None None AL40 AL41 Not present AL42
Circuit 1
high pressure
probe
E007
Circuit 1
analogue
low pressure
alarm
A circuit 1
compressor
is switched on
or reversal of
the 4-way
valve
AL43 AL44 AL45 Not present A46
Circuit 1
low pressure
probe
E008
Circuit 2
analogue
low pressure
alarm
A circuit 2
compressor
is switched on
or reversal of
the 4-way
valve
AL43 AL44 AL45 Not present A46
Circuit 2
low pressure
probe
E030 Primary circuit
antifreeze
On/O (local or
remote),input
in heat mode
(NOTE2)
AL50 AL51
(NOTA3) AL52 Not present A53
Internal
exchanger
water/air outlet
temperature
E031 External circuit
antifreeze
On/O (local or
remote),input
in heat mode
(NOTE2)
AL54 AL55 AL56 Not present A57
External
exchanger
outlet water
temperature
E032 “Vacuum”
circuit 1 None None AL59 AL60 AL58 manual reset Low pressure
input circuit 1
Alarm code
Name of alarm
Bypass activation event
Bypass time
SETactivation
Hysteresis
Automatic alarm time
(NOTE1)
No. of trips
Control Probe
E033 “Vacuum”
circuit 2 None None AL59 AL60 AL58 manual reset Low pressure
input circuit 2
E035 High
temperature None None AL47 AL48 AL49 Automatic
reset
Internal
exchanger
water/air outlet
temperature
• Thealarmsignalconsistsofacode,theformatbeing“E0nn”(nnisa2-gurenumberiden-
tifyingthetypeofalarm,e.g.E000,E025,E039...).
• Inthecaseofmultiplesimultaneousalarmsonlytheonewiththelowestcodewillbedispla-
yed(e.g.simultaneousalarmsE000andE001).ThedisplaywillshowonlyE000alternated
with the main display page
• Ifthemeasurementonthemaindisplayisincorrect,intheeventofanalarm,thealternate
alarm code will alternate with“----”.
All possible alarms are listed in the table below with their respective codes and the relative utilities
blocked:
2.4.1 Alarms table key
column
Alarm code
NOTA:
the codes are shown in ascending order (E000, E001) but there may be
some gaps (there is no E006)
Name of alarm
Notes CMP 1/2 Compressor 1/power step 2
PUMP 1/2 Pump1/2
Alarm DDigital
AInput
Reset AUTO Automatic
UTILITY
OFF COMP1 OFF compressor 1
OFF COMP2 OFF compressor 2
OFF COMP3 OFF compressor 3
OFF COMP4 OFF compressor 4
OFF (1) Whenusedfortemperaturecontrol
OFF (2) Whenusedfortemperaturecontroland/orantifreeze
OFF RES1 OFF heater 1
OFF RES2 OFF heater 2
2.3 Analogue alarms

14 SKP 20
Alarm Code
Name of Alarm
Notes
Digital/Analogue
Alarm type
Sanitary water valve
Sanitary water heater
Compressors
External exchanger fan
Recirculation fan
Internal circuit pump
External circuit pump
Internal exchanger heaters
External exchanger heaters
Output
Auxiliary
Boiler
E000 General alarm DAUTO OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF
E001 Circuit 1 digital high pressure DEvents OFF (1)
E002 Circuit 2 digital high pressure DEvents OFF (1)
E003 Circuit 1 analogue high pressure AEvents OFF (1)
E004 Circuit 2 analogue high pressure AEvents OFF (1)
E005 Circuit 1 digital low pressure DEvents OFF (1) OFF (2) OFF
E007 Circuit 1 analogue low pressure AEvents OFF (1) OFF (2) OFF
E008 Circuit 2 analogue low pressure AEvents OFF (1) OFF (2) OFF
E009 Machine low charge AEvents OFF OFF (2) OFF
E010 Compressor 1 thermal switch CMP 1 DEvents OFF COMP1
E011 Compressor 2 thermal switch CMP 2 DEvents OFF COMP2
E012 Compressor 3 thermal switch CMP 3 DEvents OFF COMP3
E013 Compressor 4 thermal switch CMP 4 DEvents OFF COMP4
E015 Compressor 1 oil pressure switch CMP 1 DEvents OFF COMP1
E016 Compressor 2 oil pressure switch CMP 2 DEvents OFF COMP2
E017 Compressor 3 oil pressure switch CMP 3 DEvents OFF COMP3
E018 Compressor 4 oil pressure switch CMP 4 DEvents OFF COMP4
E020 Primarycircuitowswitch DTime OFF for manual
reset alarm OFF OFF
OFF for
manual
reset
alarm
OFF OFF
E021 Primary circuit pump 1 thermal switch DEvents OFF (3) OFF (3) OFF
Pump 1 OFF 3) OFF 3)
E022 Primary circuit pump 2 thermal switch DEvents OFF 3) OFF 3) OFF
Pump 2 OFF 3) OFF 3)
E025 Externalcircuitowswitch DTime OFF
OFF if
alarm with
manual reset
OFF for
manual
reset
alarm
OFF
E026 Disposable circuit pump thermal switch DEvents OFF OFF OFF
E030 Primary circuit antifreeze AAUTO OFF OFF
E031 External circuit antifreeze AAUTO OFF OFF
E032 Vacuum circuit 1 AManual OFF (1) OFF (2) OFF
E033 Vacuum circuit 2 AManual OFF (1) OFF (2) OFF
E035 High temperature AAUTO OFF
E040 Primary exchanger fan thermal switch DEvents OFF OFF OFF
E041 Circuit 1 external heat exchanger fan thermal switch DEvents OFF (2) OFF (1) OFF (2)
E042 Circuit 2 external heat exchanger fan thermal switch DEvents OFF (2) OFF (1) OFF (2)
E045 Faulty clock AUTO
E046 Timelost AUTO
2.4.2 Alarms table

15 SKP 20
Alarm Code
Name of Alarm
Notes
Digital/Analogue
Alarm type
Sanitary water valve
Sanitary water heater
Compressors
External exchanger fan
Recirculation fan
Internal circuit pump
External circuit pump
Internal exchanger heaters
External exchanger heaters
Output
Auxiliary
Boiler
E047 LAN communication absent AUTO
E048 Anti-legionnaires alarm AUTO
E050 Primary exchanger electric heater 1 thermal switch DAUTO OFF
RES.1
E051 Primary exchanger electric heater 2 thermal switch DAUTO OFF
RES.2
E056 Auxiliary output thermal switch DAUTO OFF
E060
Primary exchanger water or air input temperature
probe faulty AUTO SeeProbeErrorsTable
E061
Primary exchanger water or air output temperature
probefaulty,and/orCircuit1primaryexchanger
wateroutlettemperatureprobefaulty,
and/or Circuit 2 primary exchanger
water outlet temperature probe faulty
AUTO SeeProbeErrorsTable
E062
Circuit 1 external exchanger temperature
probefaulty,and/orCircuit2external
exchanger temperature probe faulty
AUTO SeeProbeErrorsTable
E063
Faulty disposable exchanger water or air input
temperature probe AUTO SeeProbeErrorsTable
E064
Faulty disposable exchanger water or air output
temperature probe AUTO SeeProbeErrorsTable
E065 Faulty ambient temperature probe AUTO SeeProbeErrorsTable
E066 Sanitary water temperature probe faulty AUTO SeeProbeErrorsTable
E067
Faulty display probe
(temperature / pressure) AUTO SeeProbeErrorsTable
E068 Faulty external temperature probe AUTO
E069
Faulty circuit 1 high pressure transducer or
Faulty circuit 2 high pressure transducer AUTO SeeProbeErrorsTable
E070
Faulty circuit 1 low pressure transducer
Faulty circuit 2 low pressure transducer AUTO
E071 Faulty compressor 1 discharge temperature probe AUTO
E073 Faulty dynamic setpoint input AUTO
E074
Faulty primary heat exchanger transducer
circuit1,and/orFaultyprimaryheat
exchanger transducer circuit 2
AUTO SeeProbeErrorsTable
E075
Faulty disposable exchanger transducer
circuit1,and/orFaultydisposable
exchanger transducer circuit 2
AUTO SeeProbeErrorsTable
E080 Conguration error AUTO OFF OFF
E081 Compressoroperatinghoursexceeded(*) CMP Manual
E085 Primarycircuitpumpoperatinghoursexceeded(*) PUMP Manual
E086 Externalcircuitpumpoperatinghoursexceeded(*) PUMP Manual
E090 Alarm log full warning Manual

Serie
SKP 20
Issue Supersedese
02.15 ---
Catalogue
M 204b
Thedataindicatedinthismanualispurelyindicative.
Themanufacturerreservestherighttomodifythedatawheneveritisconsiderednecessary.