Mitsubishi EHST20C-VM2C - 9-4. Service Menu

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Manual operation menu screen
Theservicemenuprovidesfunctionsforusebyinstallerorserviceengineer.ItisNOTintendedthehomeowneralterssettingswithinthismenu.Itisforthisreason
passwordprotectionisrequiredtopreventunauthorisedaccesstotheservicesettings.
Thefactorydefaultpasswordis"0000".
FollowtheproceduredescribedinGeneralOperationforthesetupoperation.
TheservicemenuisnavigatedusingtheF1andF2buttonstoscroll
throughthefunctions.Themenuissplitacross2screensandis
comprisedofthefollowingfunctions;
1. Manual operation
2. Functionsettings
3. Thermistoradjustment
4. Auxiliarysettings
5. Heatsourcesetting
6. Pump speed
7. Operationsettings
8. Energymonitorsettings
9. Externalinputsettings
10.Runninginformation
11.Thermistorreading
12.Summaryofsettings
13. Error history
14.Passwordprotection
15. Manual reset
16. SD card
9-4. Service Menu
Manyfunctionscannotbesetwhilsttheindoorunitisrunning.Theinstallershouldturnofftheunitbeforetryingtosetthesefunctions.Iftheinstallerattemptsto
changethesettingswhilsttheunitisrunningthemainremotecontrollerwilldisplayaremindermessagepromptingtheinstallertostopoperationbeforecontinu-
ing.Byselecting“Yes”theunitwillceaseoperation.
Selected
Running
Error
indication
<Manual operation>
Duringthellingofthesystemthewatercirculationpumpand3-wayvalvecan
bemanuallyoverriddenusingmanualoperationmode.
When manual operation is selected a small timer icon appears in the screen.
Thefunctionselectedwillonlyremaininmanualoperationforamaximumof2
hours. This is to prevent accidental permanent override of the FTC.
►Example
PressingF3buttonwillswitchmanualoperationmodeONforthemain3-way
valve.WhenllingoftheDHWtankiscompletetheinstallershouldaccessthis
menuagainandpressF3todeactivatemanualoperationofthepart.
Alternativelyafter2hoursmanualoperationmodewillnolongerbeactiveand
FTCwillresumecontrolofthepart.
Manualoperationandheatsourcesettingcannotbeselectedifthesystem
isrunning.Ascreenwillbedisplayedaskingtheinstallertostopthesystem
before these modes can be activated.
The system automatically stops 2 hours after the last operation.
<Function settings>
FunctionSettingallowsthesettingofautorecoveryafterpowerfailureandof
smartgridready.
1.FromtheservicemenuuseF1andF2tohighlightFunctionSetting.
2. Press CONFIRM.
3.EnsuretheRefaddressandunitnumberaredisplayedtotheright.
4. Press CONFIRM.
5.UseF3andF4tohighlighteither1/2/3(seebelow).
6. Press CONFIRM.
Setting Unit Mode Number
Autorecoveryafterpowerfailure Grp Mode1 1 - Inactive
2 - Active *1
3 - NO FUNCTION
Smartgridready*2
(Hotwateroperation)
1 Mode7
*3
1 - Inactive
2-Targettemp.+3°C
3-Targettemp.+5°C
Smartgridready*2
(Heatingoperation)
1 Mode8
*3
1 - Inactive
2-ThermoONtemp.+2°C
3-ThermoONtemp.+3°C
*1Approx.4-minutedelayafterpowerisrestored.
*2Referto"Smartgridready"intheindoorunitinstallationmanual.
*3Ifthemodeisnotdisplayed,FunctionSettingmustbeinitialised.EnterRequestcode“200”
in“RunningInformation”.
OCH570C