4-7
Climate Class 6100i / 6000i / 8100i / 8000i
Main cause Inspection method Normal value/condition Remedy
Use Sevick light (Hitachi). Check if Sevick light (Hitachi)
is used.
Signal may not be received
sometimes due to effect of
Sevick light.
Replace light or change posi-
tion.
Operating position/angle are inap-
propriate.
Operate within range specied
in manual.
Signal should be received with-
in range specied in manual.
Explain appropriate handling to
user.
Open-circuit or short-circuit in wiring
of light receiving section.
Check if wires of light receiving
section are caught.
Wires of light receiving section
should not have any damage
caused by pinching.
Replace wires of light receiving
section.
Defective light receiving unit. Check signal receiving circuit
(measure voltage between
terminals 5 and 9 of connector
BCN8).
Tester indicator should move
when signal is received.
Replace PWB.
Dew condensation on light receiving
unit.
Check for water and rust. Signal should be received with-
in range specied in manual.
Take moisture-proof measure
for lead wire outlet of light
receiving section.
5.Louvers do not move
Main cause Inspection method Normal value/condition Remedy
Caught in sliding section. Operate to see if louvers are
caught in place.
Louvers should operate
smoothly.
Remove or correct catching
section.
Disconnected connector Inspect connectors. Connectors or pins should not
be disconnected.
Install correctly.
Contact of solder on PWB
(connector section on PWB)
Check visually. There should not be solder
contact.
Correct contacting section.
6.There is noise in TV/radio
Main cause Inspection method Normal value/condition Remedy
Grounding wires not connected
properly.
Check grounding wire connec-
tions.
Grounding wires should be
connected properly.
Connect grounding wires prop-
erly.
TV/radio is placed too close to out-
door unit.
Check distance between TV/
radio and outdoor unit.
If TV/radio is placed too close,
it may become affected by
noise.
Move TV/radio away from out-
door unit.
Other than above. Check for radio wave interfer-
ence.
7. Malfunction occurs
Main cause Inspection method Normal value/condition Remedy
Malfunction caused by noise. Check for radio wave interfer-
ence.
8.Compressor does not start
Main cause Inspection method Normal value/condition Remedy
Erroneous inter-unit connection. Check wiring between indoor
and outdoor units.
Terminal board 1-N: 230 VAC,
50 Hz
Terminal board 2: serial signal
Correct wiring.
Damaged IPM. Check IPM continuity. - Replace outdoor unit PWB.
Dried-up electrolytic capacitor. Check electrolytic capacitor. - Replace outdoor unit PWB.
Blown outdoor unit fuse. Check 20-A fuse. Fuse should not be blown. Replace fuse.
Replace outdoor unit PWB.
Power supply voltage is too low. Measure power supply voltage
during startup.
230±10 VAC, 50 Hz Make sure that power supply
voltage is 180 V or higher.
Compressor lock. Supply current and touch
compressor cover( sound
absorbing material) to check if
operation starts.
Compressor should start nor-
mally.
Apply external impact to com-
pressor.
Replace compressor.
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