Daikin EGSQH10S18AA9W User manual

Operationmanual
DaikinAlthermagroundsourceheatpump English
Operationmanual
DaikinAlthermagroundsourceheatpump
EGSQH10S18AA9W

Tableofcontents
Operationmanual
2
EGSQH10S18AA9W
DaikinAlthermagroundsourceheatpump
4P3517501C–2014.03
Tableofcontents
1 Aboutthisdocument 2
2 Aboutthesystem 2
2.1 Componentsinatypicalsystemlayout ..................................... 2
3 Operation 3
3.1 Overview:Operation.................................................................. 3
3.2 Theuserinterfaceataglance ................................................... 3
3.2.1 Buttons........................................................................ 3
3.2.2 Statusicons ................................................................ 3
3.3 Spaceheatingcontrol................................................................ 4
3.3.1 Settingthespaceoperationmode .............................. 4
3.3.2 Usingtheroomtemperaturehomepage .................... 4
3.3.3 Usingtheleavingwatertemperaturehomepages
(main+additional) ...................................................... 4
3.4 Domestichotwatercontrol ........................................................ 4
3.4.1 Reheatmode .............................................................. 4
3.4.2 Scheduledmode ......................................................... 4
3.4.3 Scheduled+reheatmode........................................... 5
3.4.4 UsingtheDHWtanktemperaturehomepage ............ 5
3.4.5 UsingtheDHWtankboostermode ............................ 5
3.5 Schedules:Example.................................................................. 5
Toselectwhichscheduleyoucurrentlywanttouse... 5
3.6 Menustructure:Overviewusersettings .................................... 6
3.7 Installersettings:Tablestobefilledinbyinstaller .................... 7
3.7.1 Quickwizard ............................................................... 7
3.7.2 Spaceheatingcontrol ................................................. 7
3.7.3 Domestichotwatercontrol[A.4] ................................. 7
3.7.4 Contact/helpdesknumber[6.3.2] ................................ 7
4 Energysavingtips 7
5 Maintenanceandservice 8
5.1 Overview:Maintenanceandservice.......................................... 8
5.2 Tofindthecontact/helpdesknumber ........................................ 8
6 Troubleshooting 8
6.1 Symptom:Youarefeelingtoocold(hot)inyourlivingroom ..... 8
6.2 Symptom:Thewateratthetapistoocold ................................ 8
6.3 Symptom:Heatpumpfailure ..................................................... 9
7 Glossary 9
1 Aboutthisdocument
Thankyouforpurchasingthisproduct.Please:
▪ Read the documentation carefully before operating the user
interfacetoensurethebestpossibleperformance.
▪ Requesttheinstallertoinformyouaboutthesettingsthatheused
to configure your system. Check if he has filled in the installer
settingstables.Ifnot,requesthimtodoso.
▪ Keepthedocumentationforfuturereference.
Targetaudience
Endusers
Documentationset
This document is part of a documentation set. The complete set
consistsof:
Document Contains… Format
General
safety
precautions
Safetyinstructionsthat
youmustreadbefore
operatingyoursystem
Paper(intheboxofthe
indoorunit)
Operation
manual
Quickguideforbasic
usage
User
reference
guide
Detailedstepbystep
instructionsand
backgroundinformation
forbasicandadvanced
usage
Digitalfilesonhttp://
www.daikineurope.com/
supportandmanuals/
productinformation/.
Latestrevisionsofthesupplieddocumentationmaybeavailableon
theregionalDaikinwebsiteorviayourinstaller.
Availablescreens
Dependingonyoursystemlayoutandinstallerconfiguration,notall
screensinthisdocumentmaybeavailableonyouruserinterface.
Breadcrumbs
1Room temperature
Select Scroll
20.0°C >
18.0°C >
22.0°C >
24.0°C >
7.4.1.1
Comfort (heating)
Eco (heating)
Comfort (cooling)
Eco (cooling)
Breadcrumbshelpyoutolocatewhereyouareinthemenustructure
of the user interface. This document also mentions these
breadcrumbs.
Example: Go to [7.4.1.1]:  > User settings > Preset values >
Roomtemperature>Comfort(heating)
2 Aboutthesystem
Dependingonthesystemlayout,thesystemcan:
▪ Heatupaspace
▪ Producedomestichotwater(ifaDHWtankisinstalled)
2.1 Componentsinatypicalsystem
layout
d
a
b
c
e
f
gBC A
AMainzone.Example:Livingroom.
BAdditionalzone.Example:Bedroom.
CTechnicalroom.Example:Garage.
aBrineloop
bIndoorunitheatpump
cDomestichotwater(DHW)tank
dUserinterfaceattheindoorunit

3Operation
Operationmanual
3
EGSQH10S18AA9W
DaikinAlthermagroundsourceheatpump
4P3517501C–2014.03
eUserinterfaceinthelivingroom,usedasroomthermostat
fUnderfloorheating
gHeatpumpconvectorsorfancoilunits
INFORMATION
The indoor unit and the domestic hot water tank (if
installed)canbeseparatedorintegrateddependingonthe
indoorunittype.
3 Operation
3.1 Overview:Operation
You can operate the system via the user interface. This part
describeshowtousetheuserinterface:
Part Description
Ataglance ▪ Buttons
▪ Statusicons
Spaceheatingcontrol Howtocontrolspaceheating:
▪ Settingthespaceoperationmode
▪ Controllingthetemperature
Domestichotwater
control
Howtocontroldomestichotwater:
▪ Reheatmode
▪ Scheduledmode
▪ Scheduled+reheatmode
Schedules Howtoselectandprogramschedules.
Menustructure Overviewofmenustructure
Installersettingstable Overviewofinstallersettings
3.2 Theuserinterfaceataglance
3.2.1 Buttons
a
ef
b
d
c
aHOMEPAGES
▪ Switchesbetweenhomepages(whenyouareonahome
page).
▪ Goestothedefaulthomepage(whenyouareinthemenu
structure).
bMALFUNCTIONINFORMATION
Ifamalfunctionoccurs, isdisplayedonthehomepages.
Press todisplaymoreinformationaboutthemalfunction.
cON/OFF
Turns ON or OFF one of the controls (room temperature,
leavingwatertemperature,DHWtanktemperature).
dMENUSTRUCTURE/BACK
▪ Opens the menu structure (when you are on a home
page).
▪ Goes up a level (when you are navigating through the
menustructure).
▪ Goesback1step(example:whenyouareprogramminga
scheduleinthemenustructure).
e   NAVIGATING/CHANGINGSETTINGS
▪ Navigatesthecursoronthedisplay.
▪ Navigatesthroughthemenustructure.
▪ Changessettings.
▪ Selectsamode.
fOK
▪ Confirmsaselection.
▪ Entersasubmenuinthemenustructure.
▪ Switchesbetweendisplayingactualanddesiredvalues,or
betweendisplaying actualandoffset values(ifapplicable)
onthehomepages.
▪ Goes to the next step (when you are programming a
scheduleinthemenustructure).
▪ Enablesyou toactivate ordeactivate childlockifpressed
formorethan5secondsonahomepage.
▪ Enables you to activate or deactivate a function lock if
pressedformorethan5secondsinthemainmenuofthe
menustructure.
INFORMATION
Ifyoupress or whilechangingsettings,thechanges
willNOTbeapplied.
3.2.2 Statusicons
Icon Description
Spaceoperationmode=Heating.
Notavailable.
Unitisoperating.
Desiredroomtemperature=presetvalue(Comfort;
daytime).
Desiredroomtemperature=presetvalue(Eco;
nighttime).
▪ On the room temperature home page: Desired
room temperature = according to the selected
schedule.
▪ On the DHW tank temperature home page:
DHWtankmode=Scheduledmode.
DHWtankmode=Reheatmode.
DHWtankmode=Scheduled+reheatmode.
Atthenextscheduledaction,thedesiredtemperature
willincrease.
Atthenextscheduledaction,thedesiredtemperature
willNOTchange.
Atthenextscheduledaction,thedesiredtemperature
willdecrease.
Thepresetvalue(ComfortorEco)orscheduledvalue
istemporarilyoverruled.
Thesystemwillproducedomestichotwaterforthe
indicatednumberofpersons.
TheDHWtankboostermodeisactiveorreadytobe
activated.
Quietmodeisactive.
Holidaymodeisactiveorreadytobeactivated.
Childlockmodeand/orfunctionlockmodeisactive.

3Operation
Operationmanual
4
EGSQH10S18AA9W
DaikinAlthermagroundsourceheatpump
4P3517501C–2014.03
Icon Description
Anexternalheatsourceisactive.Example:Gas
burner.
Thedisinfectionmodeisactive.
Amalfunctionoccured.Press todisplaymore
informationaboutthemalfunction.
Weatherdependentmodeisactive.
Userpermissionlevel=Installer.
Defrost/oilreturnmodeisactive.
Hotstartmodeisactive.
Emergencyoperationisactive.
INFORMATION
QuietmodeisNOTapplicableforthisunit.
3.3 Spaceheatingcontrol
3.3.1 Settingthespaceoperationmode
Aboutspaceoperationmodes
Theheatpump isaheatingonlymodel. Thesystemcanheatup a
space,butNOTcooldownaspace.
3.3.2 Usingtheroomtemperaturehomepage
Typicalroomtemperaturehomepages
Dependingontheuserprofile,theuser interfacegivesyoueithera
basicoradetailedhomepage.Toswitchbetweenhomepages,go
to[7.1.3]: >Usersettings>Display>Userprofile.
Userprofile=Basic Userprofile=Detailed
15:20
Mon
Room
Actual temperature
20.0°C
15:20
Mon
Room
Actual temperature
20.0°C
Tue 17:30
Scheduled
Toreadouttheactualanddesiredroomtemperature
1Gototheroomtemperaturehomepage(Room).
Result: You can read out the actual temperature.
Actual temperature
20.0°C
2Press .
Result: You can read out the desired temperature.
Desired temperature
22.0°C
Totemporarilyoverruletheroomtemperatureschedule
1Gototheroomtemperaturehomepage(Room).
2Use or toadjustthetemperature.
Tochangethemodefromscheduledtopresetvalue
Prerequisite:Userprofile=Detailed.
1Gototheroomtemperaturehomepage(Room).
2Press or toselectapresetvalue( or ).
Result:ThemodewillreturntoScheduledaccordingtotheoverrule
period.
Tosettheoverruleperiod
1Goto[7.2]: >Usersettings>Temperaturelock.
2Selectavalueandpress :
▪ Permanent
▪ hours(2,4,6,8)
3.3.3 Usingtheleavingwatertemperature
homepages(main+additional)
INFORMATION
The leaving water is the water that is sent to the heat
emitters. The desired leaving water temperature is set by
your installer in accordance with the heat emitter type.
Example:Underfloorheatingisdesignedforlowerleaving
water temperature than radiators and heat pump
convectors and/or fan coil units. You only have to adjust
leavingwatertemperaturesettingsincaseofproblems.
For more information about the leaving water temperature, see the
userreferenceguide.
3.4 Domestichotwatercontrol
3.4.1 Reheatmode
In reheat mode ( ),the DHW tank continuously heats up to the
temperature shown on the DHW tank temperature home page
(example:50°C).
t
60°C
00:00 07:00
50°C
15°C
40°C
14:00 21:00
1
2
3
4
Tt
TtDHWtanktemperature
tTime
3.4.2 Scheduledmode
In scheduled mode ( ), the DHW tank produces hot water
corresponding to a schedule. The best time to allow the tank to
producehotwaterisatnight,because:
▪ Thespaceheatingdemandislower
▪ Electricitytariffsarelower
Example:
t
60°C
00:00 07:00
50°C
15°C
40°C
14:00 21:00
1
2
34
5
Tt
TtDHWtanktemperature
tTime

3Operation
Operationmanual
5
EGSQH10S18AA9W
DaikinAlthermagroundsourceheatpump
4P3517501C–2014.03
3.4.3 Scheduled+reheatmode
Inscheduled+reheatmode(  ),thedomestichotwatercontrolis
the same as in scheduled mode. However, when the DHW tank
temperaturedropsbelowapresetvalue(=reheattanktemperature–
hysteresis value = [60C]–[608]; example: 35°C), the DHW tank
heatsupuntilitreachesthereheatsetpoint([60C];example:45°C).
Thisensuresthataminimumamountofhotwaterisavailableatall
times.
Example:
t
Tt
60°C
00:00 07:00
50°C
45°C
15°C
14:00 21:00
35°C
1245
3
[6-0C]=
[6-0B]=
[6-0A]=
[6-0C]–[6-08]=
[6-08]
TtDHWtanktemperature
tTime
[60A] Storagecomfort
[60B] Storageeco
[60C] Reheat
[608] Reheathysteresis
3.4.4 UsingtheDHWtanktemperaturehome
page
TypicalDHWtanktemperaturehomepages
Dependingontheuserprofile,theuser interfacegivesyoueithera
basic or a detailed home page. Depending on an installer setting,
either an actual temperature or a number of people is displayed to
indicatethe domestic hot watertanktemperature. The examplesin
theillustrationsbelowareinDHWtankmode=Scheduled.
Userprofile=Basic Userprofile=Detailed
15:20
Mon
Tank
Desired temperature
60°C
15:20
Mon
Tank
Storage comfort
60°C
Tue 00:00
15:20
Mon
Tank
Desired temperature
4
15:20
Mon
Tank
Storage comfort
4
Tue 00:00
Toreadoutandadjustthedesiredreheattemperature(in
scheduledandreheatmode)
1Go to [7.4.3.3]:  > User settings > Preset values > Tank
temperature>Reheat.
Result:Youcanreadoutthedesiredreheattemperature.
2Press or toadjust.
Toreadoutandoverruletheactiveornextscheduleddesired
temperature(inscheduledmodeorscheduled+reheatmode)
1GototheDHWtanktemperaturehomepage(Tank).
Result:
60°C
or
4
isdisplayed.
2Press or tooverrule.Note:Ifthedesiredtemperatureis
weatherdependent,youcannotchangeitonthehomepage.
3.4.5 UsingtheDHWtankboostermode
ToactivatetheDHWtankboostermode(method1)
1GototheDHWtanktemperaturehomepage(Tank).
2Press formorethan5seconds.
ToactivatetheDHWtankboostermode(method2)
Prerequisite:Userprofile=Detailed
1GototheDHWtanktemperaturehomepage(Tank).
2Press toselect .
3.5 Schedules:Example
INFORMATION
Theprocedurestoprogramothercontrolsaresimilar.
Inthisexample:
▪ Roomtemperaturescheduleinheatingmode
▪ Monday=Tuesday=Wednesday=Thursday=Friday
▪ Saturday=Sunday
Toprogramtheschedule
1Go to [7.3.1.1]:  > User settings > Set schedules > Room
temp.>Setheatingschedule.
2SelectEmptyandpress .
3ProgramthescheduleforMonday.Seebelowformoredetails.
4Copy from Monday to Tuesday, Wednesday, Thursday and
Friday.Seebelowformoredetails.
5ProgramthescheduleforSaturday.
6CopyfromSaturdaytoSunday.
7Save the schedule and give it a name. See below for more
details.
ToprogramthescheduleforMonday
1Use and toselectMonday.
2Press toenterthescheduleforMonday.
3ProgramthescheduleforMonday:
▪ Use and toselectanentry.
▪ Use and tochangethevalueofanentry.
Tocopyfromonedaytoanother
1Select the day from which you want to copy and press .
Example:Monday.
2SelectCopydayandpress .
3SetthedaysyouwanttocopytoYesandpress .Example:
Tuesday=Yes,Wednesday=Yes,Thursday=YesandFriday
=Yes.
Tosavetheschedule
1Press ,selectSavescheduleandpress .
2Select User defined 1, User defined 2 or User defined 3 and
press .
3Change the name and press . (Only applicable for room
temperatureschedules).Example:MyWeekSchedule
Toselectwhichscheduleyoucurrentlywanttouse
1Goto[5]: >Selectschedules.
2Selectforwhichcontrolyouwanttouseaschedule.Example:
[5.1]Roomtemperature.
3Select for which operation mode you want to use a schedule.
Example:[5.1.1]Heating.
4Selectapredefinedoruserdefinedscheduleandpress .

3Operation
Operationmanual
6
EGSQH10S18AA9W
DaikinAlthermagroundsourceheatpump
4P3517501C–2014.03
3.6 Menustructure:Overviewusersettings
< >
Date
Time
Daylight Saving Time
Clock type
Set time/date[1]
Holiday
Holidaymode
From
Until
Holiday[2]
Use day schedule
Home
Room temperature
LWTmain
LWT additional
Tank temperature
Select schedules[5]
Sensor information
Energymetering
Error handling
User permission level
Information[6]
Actuators
Operation modes
Running hours
Version
Display
Temperaturelock
Set schedules
Preset values
User settings
[7]
Allowed operation mode
Unit of measurement
Holiday
Holidaymode
From
Until
Holiday[2]
Away
Consumed elec.
Producedenergy
Energy metering[6.2]
Error history
Contact/helpdesknumber
Error information[6.3]
User interface
Indoorunit
Outdoor unit
Version[6.8]
Contrast
BacklitLCDtime
User profile
Available home pages
Display[7.1]
Room temperature
LWTmain
Tank temperature
Quiet level
Preset values[7.4]
Room temp.
LWTmain
LWT additional
Tank temp.
Set schedules[7.3]
Quiet mode
DHW pump
[3]
Operation mode[4]
Quiet mode

4Energysavingtips
Operationmanual
7
EGSQH10S18AA9W
DaikinAlthermagroundsourceheatpump
4P3517501C–2014.03
INFORMATION
Energy metering functionality is NOT applicable and/or
NOT valid for this unit if it is calculated by the unit. If
optionalexternalmetersareused,energymeteringdisplay
isvalid.
INFORMATION
QuietmodeandquietlevelisNOTapplicableforthisunit.
INFORMATION
▪ IndoorunitrelatestoindoorunitPCBwhichcontrolsthe
hydraulicpartofthegroundsourceheatpump.
▪ OutdoorunitrelatestooutdoorunitPCBwhichcontrols
the compressor module of the ground source heat
pump.
3.7 Installersettings:Tablestobe
filledinbyinstaller
3.7.1 Quickwizard
Setting Default Fillin…
PreferentialkWhratepowersupply[A.2.1.6]
PreferentialkWhrate 0(No)
Spaceheatingsettings[A.2.1]
Unitcontrolmethod 0(LWT
control)
Userinterfacelocation 1(Inroom)
NumberofLWTzones 0(1LWT
zone)
Pumpoperationmode 1(Sample)
Domestichotwatersettings[A.2.2]
DHWpump 0(No)
Thermostats[A.2.2]
Contacttypemain 1(Thermo
ON/OFF)
Contacttypeadd. 1(Thermo
ON/OFF)
Externalsensor 0(No)
DigitalI/OPCB[A.2.2.6]
Ext.backupheatsrc 0(No)
Alarmoutput 0(Normally
open)
DemandPCB[A.2.2.7]
DemandPCB 0(No)
Energymetering[A.2.2]
ExternalkWhmeter1 0(No)
ExternalkWhmeter2 0(No)
Capacities(energymetering)[A.2.3]
BUH:step1 3kW
BUH:step2 3kW
Autoemergency[A.5.1.2]
Autoemergencyoperation Manual
INFORMATION
Auto emergency: By default, backup heater operation
during emergency operation is NOT allowed. This means
that when a heat pump failure occurs the user needs to
manually confirm that backup heater may operate during
emergency.Ifthe house is unattended forlongerperiods,
we recommend that setting [A.5.1.2] Auto emergency
operationshallbesettoAutomatic.
3.7.2 Spaceheatingcontrol
Setting Default Fillin…
Leavingwatertemperature:Mainzone[A.3.1.1]
LWTsetpointmode 1(Weather
dep.)
Setweatherdependentheating –20/15/60/25
Leavingwatertemperature:Additionalzone[A.3.1.2]
LWTsetpointmode 1(Weather
dep.)
Setweatherdependentheating 25/60/15/−20
Leavingwatertemperature:DeltaTemitter[A.3.1.3]
Heating 8°C
Leavingwatertemperature:Modulation[A.3.1.1.5]
ModulatedLWT 0(No)
Leavingwatertemperature:Emittertype[A.3.1.1.7]
Emittertype 0(Quick)
3.7.3 Domestichotwatercontrol[A.4]
Setting Default Fillin…
Type 1(Reheat+
sched.)
Setpointreadouttype 0
(Temperature)
Maximumsetpoint 60°C
3.7.4 Contact/helpdesknumber[6.3.2]
Setting Default Fillin…
Contact/helpdesknumber —
4 Energysavingtips
Tipsaboutroomtemperature
▪ MakesurethedesiredroomtemperatureisNEVERtoohigh,but
ALWAYSaccordingtoyouractualneeds.Eachsaveddegreecan
saveupto6%ofheatingcosts.
▪ Do NOT increase the desired room temperature to speed up
spaceheating.ThespacewillNOTheatupfaster.
▪ When your system layout contains slow heat emitters (example:
under floor heating), avoid large fluctuation of the desired room
temperatureanddoNOTlettheroomtemperaturedroptoolow.It
willtakemoretimeandenergytoheatuptheroomagain.
▪ Use a weekly schedule for your normal space heating needs. If
necessary,youcaneasilydeviatefromtheschedule:
▪ For shorter periods: You can overrule the scheduled room
temperature. Example: When you have a party, or when you
areleavingforacoupleofhours.
▪ For longer periods: You can use the holiday mode. Example:
When you stay at home during your holiday, or when you go
awayduringyourholiday.

5Maintenanceandservice
Operationmanual
8
EGSQH10S18AA9W
DaikinAlthermagroundsourceheatpump
4P3517501C–2014.03
TipsaboutDHWtanktemperature
▪ Makesurethenumber(available hotwaterforxpersons) onthe
DHWtanktemperaturehomepageisNOThigherthanyouractual
needs.
▪ Useaweeklyscheduleforyournormaldomestichotwaterneeds
(onlyinscheduledmode).
▪ Program to heat up the DHW tank to a preset value (Storage
comfort = higher DHW tank temperature) during the night,
becausethenspaceheatingdemandislowerandelectrictariffs
maybelower.
▪ If heating up the DHW tank once at night is not sufficient,
programtoadditionallyheatuptheDHWtanktoapresetvalue
(Storageeco=lowerDHWtanktemperature)duringtheday.
▪ Make sure the desired DHW tank temperature is NOT too high.
Example:Afterinstallation,lowertheDHWtanktemperaturedaily
by1°Candcheckifyoustillhaveenoughhotwater.
▪ Program to turn ON the domestic hot water pump only during
periodsofthedaywheninstanthotwaterisnecessary.Example:
Inthemorningandevening.
5 Maintenanceandservice
5.1 Overview:Maintenanceand
service
Theinstallerhastoperformayearlymaintenance.Youcanfindthe
contact/helpdesknumberviatheuserinterface.
Asenduser,youhaveto:
▪ Keeptheuserinterfacecleanwithasoftdampcloth.DoNOTuse
anydetergents.
▪ Regularlycheckifthewaterpressureindicatedonthemanometer
isabove1bar.
Refrigerant
Thisproductcontainsfluorinatedgreenhousegasescoveredbythe
KyotoProtocol.DoNOTventgasesintotheatmosphere.
Refrigeranttype:R410A
Globalwarmingpotentialvalue:1975
Periodical inspections for refrigerant leaks may be required
dependingontheapplicablelegislation.Pleasecontactyourinstaller
formoreinformation.
5.2 Tofindthecontact/helpdesk
number
Goto[6.3.2]: >Information>Errorhandling>Contact/helpdesk
number.
6 Troubleshooting
6.1 Symptom:Youarefeelingtoocold
(hot)inyourlivingroom
Possiblecause Correctiveaction
Thedesiredroomtemperatureis
toolow(high).
Increase(decrease)thedesired
roomtemperature.
Iftheproblemrecursdaily,do
oneofthefollowing:
▪ Increase (decrease) the room
temperaturepresetvalue.
▪ Adjust the room temperature
schedule.
Thedesiredroomtemperature
cannotbereached.
Increasethedesiredleaving
watertemperatureinaccordance
withtheheatemittertype.
6.2 Symptom:Thewateratthetapis
toocold
Possiblecause Correctiveaction
Youranoutofdomestichot
waterbecauseofunusualhigh
consumption.
Ifyouimmediatelyneeddomestic
hotwater,activatetheDHWtank
boostermode.However,this
consumesextraenergy.
Ifyoucanwait,overrule
(increase)theactiveornext
scheduleddesiredtemperature
sothatmorehotwaterwillbe
producedexceptionally.
Iftheproblemsrecursdaily,do
oneofthefollowing:
▪ Increase the DHW tank
temperaturepresetvalue.
▪ Adjust the DHW tank
temperature schedule.
Example: Program to
additionally heat up the
DHW tank to a preset value
(Storage eco = lower tank
temperature)duringtheday.
ThedesiredDHWtank
temperatureistoolow.

7Glossary
Operationmanual
9
EGSQH10S18AA9W
DaikinAlthermagroundsourceheatpump
4P3517501C–2014.03
6.3 Symptom:Heatpumpfailure
Whentheheatpumpfailstooperatethebackupheatercanserveas
an emergency heater and either automatically or nonautomatically
take over the heat load. When auto emergency is activated and a
heatpumpfailureoccurs, the backup heater will automatically take
over the heat load. When a heat pump failure occurs and auto
emergency is not activated, the domestic hot water and space
heatingoperationswillstopandneedtoberecoveredmanually.The
userinterfacewillthenaskyoutoconfirmwhetherthebackupheater
cantakeovertheheatloadornot.Whentheheatpumpfails, will
appearontheuserinterface.
Possiblecause Correctiveaction
Heatpumpisdamaged. ▪ Press  to view a description
oftheproblem.
▪ Press again.
▪ Select  to allow the backup
heater to take over the heat
load.
▪ Call your local dealer to get
theheatpumpfixed.
INFORMATION
When the backup heater takes over the heat load,
electricityconsumptionwillbeconsiderablyhigher.
7 Glossary
DHW=Domestichotwater
Hot water used, in any type of building, for domestic
purposes.
LWT=Leavingwatertemperature
Watertemperatureatthewateroutletoftheheatpump.

4P351750-1 C 0000000-
4P3517501C2014.03
Copyright2013Daikin