Service manual

AMX/AM900 SERVICE MANUAL
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32/AMX/AM900 . R&D, HOBART CHINA 
12.FAULTS
12.1UNCRITICALFAULTS
Fill,washanddrainprogramcanbestarted.
Duringthefillprogram,uncriticalfaultsareonlyindicatedbytheindicatorlightsanderrorcodes(none
green/redflashingON/OFFbutton).
INDICATOR  TheON/OFFbuttonisflashingGREEN/REDalternately.
Rinse Wash Lamp FAULT PROGRAM
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AL
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Drainfault
Levelswitchvalue[F11]stillexceededattheendofthe drain cycle.
Toreset,repeatdrainprogramuntilvalueisbelow[F11].
F11
Possiblecause
1. Kinkeddrainhose.
2. Drainpumpdoesnotrun(jammedor
defective).
3. PressuretransmitterB4defective
(wiring,PCB).
4.Trappossiblyclogged.
 Remedy
1. Placedrainhosecorrectly.
2. Checkdrainpump,dismantleifnecessary.
3. Checkvoltagelevel(servicemenu).
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4. Checktrap.
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HEI


Thermostop Thethermostoptime[C25]isexceeded(max.heatingperiodforwashandfill
cycle).
Resetviamachine"OF‐ON".
C25
S02
S58
Possiblecause
1. Boosterheatingdefective.
2. Missingphases.
3. Machinesingle‐phaseconnected(230V).
4. Tankheatingdefective(withtermostoptank)
parameterS58
Remedy
1. Replaceboosterheating.
2. Checkphases(alsoatsite).
3. Connecttothree‐phasecurrentifpossible.
4. Replacetankheating

CH1
CH2

Chemical
deficiency
DetergentdeficiencyX12.3"on"/rinseaiddeficiencyX12.4"on".
Ifbothcontainersareempty,CH1/CH2isdisplayedalternately.
S06

Possiblecause
1. Chemical container empty / suction hoses not
filled.
2. Adjustment of chemical deficiency sensors not
correct.
3. Missingelectricalsupply(X12.1/2).
Remedy
1. Refillcontainer/carryouthosepriming.
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2. Checksettings(seechap.7.3.2,page 17).

3. Checkvoltage(X12.1+5V,X12.20V)/check

crimpconnection.

SAL

Saltdeficiency Softenersaltdeficiencyindication–X13.5"on"
(onlyifsoftener[S05]="1").
S05

Possiblecause
1. Saltcontainerempty.
2. Floatswitchinsidesaltcontainerjammed[S3].
3. LoosecontactonPCB(X13.5/6).
Remedy
1. Refillcontainerwithregenerationsalt.
2. Loosethecontaineralittleandshakeslightly.
3. Checkcrimpconnectionandcontacts.
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d0
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
Externalwater
treatment(option)
Onlyifactivatedinservicemode[S18].
Thepresetwaterquantity[C79]+[C80]isreached(down‐counter).
Forresetseecustomermenu.
S05

Possiblecause
1. Counter reading of preset water quantity
(liter)is"0".
2. Switching function [S18] is set to "1" without
specifiedwaterquantity
Remedy
1. Resetcounter(seecustomermenu).

2. Enterthedesiredwaterquantity(liter).

CLOSEHood
Cause
Fillcycleinterruptedashoodisopen.
Remedy
 Closehood,fillingwillcontinue.

 (runningindication)