Daikin AZQS100B8V1B - Maintenance and Service; Maintenance Safety Precautions; Troubleshooting; Troubleshooting Precautions

10Troubleshooting
Installerreferenceguide
22
AZQS100~140B8V1B+AZQS100~140B7Y1B
Splitsystemairconditioners
4P3855291–2014.08
9.2 Maintenancesafetyprecautions
DANGER:RISKOFELECTROCUTION
DANGER:RISKOFBURNING
NOTICE:Riskofelectrostaticdischarge
Beforeperforminganymaintenanceorservicework,touch
ametalpartoftheunitinordertoeliminatestaticelectricity
andtoprotectthePCB.
9.3 Checklistforyearlymaintenance
oftheoutdoorunit
Checkthefollowingatleastonceayear:
▪ Outdoorunitheatexchanger.
The heat exchanger of the outdoor unit can get blocked up due to
dust, dirt, leaves, etc. It is recommended to clean the heat
exchanger yearly. A blocked heat exchanger can lead to too low
pressureortoohighpressureleadingtoworseperformance.
10 Troubleshooting
10.1 Overview:Troubleshooting
Incaseofproblems:
▪ See"7.5Errorcodeswhenperformingatestrun"onpage21.
▪ Seetheservicemanual.
Beforetroubleshooting
Carry out a thorough visual inspection of the unit and look for
obviousdefectssuchaslooseconnectionsordefectivewiring.
10.2 Precautionswhentroubleshooting
WARNING
▪ When carrying out an inspection on the switch box of
theunit,alwaysmakesurethattheunitisdisconnected
fromthemains.Turnofftherespectivecircuitbreaker.
▪ Whenasafetydevicewasactivated,stoptheunitand
find out why the safety device was activated before
resetting it. NEVER bridge safety devices or change
their values to a value other than the factory default
setting. If you are unable to find the cause of the
problem,callyourdealer.
DANGER:RISKOFELECTROCUTION
WARNING
Prevent hazard due to the inadvertent resetting of the
thermal cutout: this appliance must NOT be supplied
through an external switching device, such as a timer, or
connectedtoacircuitthatisregularlyturnedONandOFF
bytheutility.
DANGER:RISKOFBURNING
11 Disposal
11.1 Overview:Disposal
Typicalworkflow
Disposingofthesystemtypicallyconsistsofthefollowingstages:
1 Pumpingdownthesystem.
2 Dismantlingthesystemaccordingtotheapplicablelegislation.
3 Treating the refrigerant, oil and other parts according to the
applicablelegislation.
INFORMATION
Formoredetails,seetheservicemanual.
11.2 Aboutpumpdown
The unit is equipped with an automatic pump down function, with
whichyoucancollectallrefrigerantfromthesystemintotheoutdoor
unit.
Example:To protectthe environment,pump downwhenrelocating
theunitorwhendisposingoftheunit.
NOTICE
Theoutdoorunitisequippedwithalowpressureswitchor
alowpressuresensortoprotectthecompressorbyturning
itOFF.NEVERshortcircuitthelowpressureswitchduring
pumpdownoperation.
11.3 Topumpdown
1 TurnONthemainpowersupplyswitch.
2 Make sure the liquid stop valve and the gas stop valve are
open.
3 Pressthepumpdownbutton(BS4)foratleast8seconds.BS4
islocatedonthePCBintheoutdoorunit(seewiringdiagram).
Result: The compressor and outdoor unit fan start
automatically,andtheindoorunitfanmightstartautomatically.
4 ±2minutesafterthecompressorstarted,closetheliquidstop
valve.If itisnot closedproperlyduring compressor operation,
thesystemcannotbepumpeddown.
5 Oncethecompressorstops(after2~5minutes),closethe gas
stopvalve.
Result: The pump down operation is finished. The user
interfacemaydisplay" "andtheindoorpumpmay continue
operating.ThisisNOTamalfunction.EvenifyoupresstheON
buttononthe user interface, theunitwill NOT start. Torestart
theunit,turnOFFthemainpowersupplyswitchandturnitON
again.
6 TurnOFFthemainpowersupplyswitch.
NOTICE
Makesuretoreopenbothstopvalvesbeforerestartingthe
unit.