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155
Troubleshooting
ii) Diagnosis of Refrigerant Circuit / Application
There might be some causes where the unit starts running but does not perform satisfactorily, i.e. insuf
fi
cient
cooling. Judgement could be made by measuring temperature difference of indoor unit’s intake and discharge
air as well as running current.
: Faulty
: Check
: Cause
............... :
Remedy
Insufficient cooling
Clean the coil
Clean the filter
Change or repair the motor
Remove the obstruction
Indoor / outdoor coil dirty (clogged)
Indoor air filter dirty
Restricted
Fan motor malfunction
Obstruction at air inlet / outlet of
indoor / outdoor unit
Air
circulation
Remove or reduce heat source
Reduce number of people in the room
Close the windows / doors
Excessive heat source.
e.g. electric kettle
Room overcrowded with people
Windows / doors wide open
High cooling
load
Add refrigerant. Repair leakage if detected
Repair clogging or replace faulty components
Refrigerant short charge or
refrigerant leakage
Restriction e.g. at strainer, capillary,
filter dryer, etc.
Replace compressor
Less or no compression
(Low running current)
Refrigerant
circuit
Compressor
Satisfactory operation with temperature difference of air intake & discharge of indoor unit 8°C to 13°C. *
( * value is for reference only )
Insufficient heating
Clean the coil
Clean the filter
Change or repair the motor
Remove the obstruction
Indoor / outdoor coil dirty (clogged)
Indoor air filter dirty
Restricted
Fan motor malfunction
Obstruction at air inlet / outlet of
indoor / outdoor unit
Air
circulation
Close the windows / doors
Windows / doors wide open
High cooling
load
Add refrigerant. Repair leakage if detected
Repair clogging or replace faulty components
Refrigerant short charge or
refrigerant leakage
Restriction e.g. at strainer, capillary,
filter dryer, etc.
Replace compressor
Less or no compression
(Low running current)
Refrigerant
circuit
Compressor
Satisfactory operation with temperature difference of air intake & discharge of indoor unit 14°C to 20°C. *
( * value is for reference only )
DAIKIN_R22 CC.indb 155
DAIKIN_R22 CC.indb 155
11/8/2012 11:40:28 AM
11/8/2012 11:40:28 AM
Summary of Contents for FDB10CXV1
Page 2: ......
Page 134: ...131 Wiring Diagrams Indoor Unit Model FDM15CXV1 FDB15CXV1 Outdoor Unit Model R15CXV1 ...
Page 135: ...132 Wiring Diagrams Indoor Unit Model FDM20 25CXV1 FDB20 25CXV1 Outdoor Unit Model R20 25CXV1 ...
Page 136: ...133 Wiring Diagrams Indoor Unit Model FDM28 30CXV1 FDB30CXV1 Outdoor Unit Model R28CXV1 ...
Page 137: ...134 Wiring Diagrams Indoor Unit Model FDM28 30CXV1 FDB30CXV1 Outdoor Unit Model R30DXV1 ...
Page 138: ...135 Wiring Diagrams Indoor Unit Model FDM28 30CXV1 FDB30CXV1 Outdoor Unit Model R30DXY1 ...
Page 139: ...136 Wiring Diagrams Indoor Unit Model FDM38 40CXV1 FDB40CXV1 Outdoor Unit Model R35 40DXV1 ...
Page 141: ...138 Wiring Diagrams Indoor Unit Model FDM60CXV1 FDB60CXV1 Outdoor Unit Model R61DXY1 ...
Page 143: ...140 Wiring Diagrams Indoor Unit Model FDYM15CXV1 FDYB15CXV1 Outdoor Unit Model RY15CXV1 ...
Page 145: ...142 Wiring Diagrams Indoor Unit Model FDYM28 30CXV1 FDYB30CXV1 Outdoor Unit Model RY28CXV1 ...
Page 146: ...143 Wiring Diagrams Indoor Unit Model FDYM28 30CXV1 FDYB30CXV1 Outdoor Unit Model RY30DXV1 ...
Page 147: ...144 Wiring Diagrams Indoor Unit Model FDYM28 30CXV1 FDYB30CXV1 Outdoor Unit Model RY30DXY1 ...
Page 148: ...145 Wiring Diagrams Indoor Unit Model FDYM38 40CXV1 FDYB40CXV1 Outdoor Unit Model RY35 40DXV1 ...
Page 150: ...147 Wiring Diagrams Indoor Unit Model FDYM60CXV1 FDYB60CXV1 Outdoor Unit Model RY61DXY1 ...
Page 159: ......