Service & Parts Manual (2019, 2020, 2021, 2022)

260 PB
TROUBLESHOOTING
E36 / Blank Display
Doescommunicationwiring
meetspecifications?
14gaugestrandedwiringrated
for600v
Replacewiring
asrequired.
Yes
Arethereanyjunctionboxesor
splicesinthewiringexceptfor
coderequireddisconnects?
No
Replacewiring
asrequired.
Yes
IsWiringconnectedtothe
properterminals?
L,N,S1arenotalways
configuredfromlefttoright.
No
Correctwiring
connections.
Yes
CheckLineVoltageatindoor
andOutdoorUnitsfor115or
230VACasrequired.
Isvoltagecorrect?
Traceback
sourceof
problemand
correct.
No
Yes
Isthejiggleswitchoperating
correctly?Openloweraccess
panelanddepressswitchwith
suitabletoolandseeiferror
goesaway.
Yes
Repairor
adjustjiggle
switch.
No
Iscondensatepumpbeing
poweredfromterminalblock?
Itmusthaveit’sownpower
source.
Connect
condensate
pumptoits
ownpower
source.
Yes
Yes
MeasurevoltagebetweenS1
andN.Isthevoltagefluctuating
between0and24vdc?
No
Replaceindoor
oroutdoor
controlboards
asrequired.
No
BlankDisplay/E36Error
Checktheindoorandoutdoor
fanmotors.SeeComponent
Testingsection.Domotors
checkgood?
Replacemotor
asrequired
End
See Figure 702
See Figure 701