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Notes:

Refer to outdoor unit service manual for request code 0 to 102, 106 to 149.

Request codes 103 to 105 indicate error histories of both indoor and outdoor units.

As only 4 digits can be displayed at one time the software version number is displayed in two halves.

Entercode190toseetherstfourdigitsandcode191toseethelast4digits.

For example software version No. 5.01 A000, when code 190 is entered 0501 is displayed, when code 191 is entered A000 is displayed.

<Table9-4-1>

Request

code

Request content Range Unit

103 Errorhistory1(latest) Displayserrorhistory.("––"isdisplaysifnohistoryispresent.) Code

104 Errorhistory2(secondtolast) Displayserrorhistory.("––"isdisplaysifnohistoryispresent.) —

105 Errorhistory3(thirdtolast) Displayserrorhistory.("––"isdisplaysifnohistoryispresent.) —

154 Watercirculationpump1-Accumulatedoperatingtime(afterreset) 0–9999 10hours

156 Watercirculationpump2-Accumulatedoperatingtime(afterreset) 0–9999 10hours

157 Watercirculationpump3-Accumulatedoperatingtime(afterreset) 0–9999 10hours

158 Watercirculationpump4-Accumulatedoperatingtime(afterreset) 0–9999 10hours

162 Indoorunit-DIPSW1settinginformation Refer to detail contents described hereinafter. —

163 Indoorunit-DIPSW2settinginformation Refer to detail contents described hereinafter. —

164 Indoorunit-DIPSW3settinginformation Refer to detail contents described hereinafter. —

165 Indoorunit-DIPSW4settinginformation Refer to detail contents described hereinafter. —

166 Indoorunit-DIPSW5settinginformation Refer to detail contents described hereinafter. —

175 Indoorunit-Outputsignalinformation Refer to detail contents described hereinafter. —

176 Indoorunit-Inputsignalinformation Refer to detail contents described hereinafter. —

177 Mixingvalveopeningstep 0–10 Step

190 Indoorunit-Softwareversion1st4digits RefertoNotesbelow. —

191 Indoorunit-Softwareversionlast4digits RefertoNotesbelow. —

340 Watercirculationpump1-Accumulatedoperatingtimereset — —

342 Watercirculationpump2-Accumulatedoperatingtimereset — —

343 Watercirculationpump3-Accumulatedoperatingtimereset — —

344 Watercirculationpump4-Accumulatedoperatingtimereset — —

504 Indoorunit-Zone1roomtemp.(TH1A) −39–88 °C

505 Indoorunit-Ref.liquidtemp.(TH2) −39–88 °C

506 Indoorunit-Returnwatertemp.(THW2) −39–88 °C

507 Indoorunit-Zone2roomtemp.(TH1B) −39–88 °C

508 Indoorunit-DHWtankwatertemp.(THW5) −39–88 °C

509 Indoorunit-Zone1owwatertemp.(THW6) −39–88 °C

510 Indoorunit-Outsideairtemp.(TH7) −39–88 °C

511 Indoorunit-Flowwatertemp.(THW1) −39–88 °C

512 Indoorunit-Zone1returnwatertemp.(THW7) −39–88 °C

513 Indoorunit-Zone2flowwatertemp.(THW8) −39–88 °C

514 Indoorunit-Zone2returnwatertemp.(THW9) −39–88 °C

515 Indoorunit-Boilerflowwatertemp.(THWB1) −40–140 °C

516 Indoorunit-Boilerreturnwatertemp.(THWB2) −40–140 °C

540 Flowrateoftheprimarycircuit 0–100 L/min

550 Indoorunit-Errorpostponementhistory1(latest)

Displays postponement code.

("––"isdisplaysifnopostponementcodeispresent.)

—

551 Indoor unit - Operation control at time of error 0Standard,1Heater,2Boiler —

552

Indoor unit - Operation mode at time of error 0:OFF,1:DHW,2:Heating,3:Cooling,4:Legionellapreven-

tion,5:Freezeprotection,6:Operationstop,7:Defrost

—

553 Indoorunit-Outputsignalinformationattimeoferror Refer to detail contents described hereinafter. —

554 Indoorunit-Inputsignalinformationattimeoferror Refer to detail contents described hereinafter. —

555 Indoorunit-Zone1roomtemp.(TH1A)attimeoferror −39–88 °C

556 Indoorunit-Zone2roomtemp.(TH1B)attimeoferror −39–88 °C

557 Indoorunit-Ref.liquidtemp.(TH2)attimeoferror −39–88 °C

558 Indoorunit-Flowwatertemp.(THW1)attimeoferror −39–88 °C

559 Indoorunit-Returnwatertemp.(THW2)attimeoferror −39–88 °C

560 Indoorunit-DHWtankwatertemp.(THW5)attimeoferror −39–88 °C

561 Indoorunit-Zone1flowwatertemp.(THW6)attimeoferror −39–88 °C

562 Indoorunit-Zone1returnwatertemp.(THW7)attimeoferror −39–88 °C

563 Indoorunit-Zone2flowwatertemp.(THW8)attimeoferror −39–88 °C

564 Indoorunit-Zone2returnwatertemp.(THW9)attimeoferror −39–88 °C

565 Indoorunit-Boilerflowwatertemp.(THWB1)attimeoferror −40–140 °C

566 Indoorunit-Boilerreturnwatertemp.(THWB2)attimeoferror −40–140 °C

567

Indoorunit-Failure(P1/P2/L5/L8/Ld)thermistor 0:Failurethermistorisnone,1:TH1A,2:TH2,3:THW1,

4:THW2,5:THWB1,6:THW5,7:THWB2,8:TH1B,A:THW6,

B:THW7,C:THW8,D:THW9

—

568 Mixingvalveopeningstepattimeoferror 0–10 Step

569

OperatedFlowswitchattimeoffailure(L9) 0:Nooperatedflowswitch,1:Flowswitch1,2:Flowswitch2,

3:Flowswitch3

—

571 Flowrateattimeoferror 0–100 L/min

OCH590B

Brand	Mitsubishi Electric
Model	EHSE-YM9EC
Category	Heat Pump
Language	English

Mitsubishi Electric EHSE-YM9EC User Manual

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