How To Operate The Outdoor Unit Independently; General Troubleshooting Chart - Sharp AE-X26FR-N Service Manual

[4] HOW TO OPERATE THE OUTDOOR UNIT INDEPENDENTLY

1. Cooling in 40 Hz fixed mode
To operate the outdoor unit independently, short-circuit the sections indicated by arrows in the diagram below with an adapter, and apply 230 VAC
between (1) and (N) on the terminal board of the outdoor unit. This allows the outdoor unit to be operated in cooling mode independently.
(Do not operate the outdoor unit in this condition for an extended period of time.)

[5] GENERAL TROUBLESHOOTING CHART

1. Indoor unit does not turn on
Main cause
Cracked PWB.
(Cracked pattern)
Open-circuit in FU1 (250 V, 3 A),
FU2 (250 V, 3 A)
2. Indoor unit fan does not operate
Main cause
Open-circuit in heat exchanger
thermistor (TH2) (in heating oper-
ation)
Disconnected heat exchanger
thermistor (TH2) (in heating oper-
ation)
3. Indoor unit fan speed does not change
Main cause
Remote control not designed to
allow fan speed change.
4. Remote control signal is not received
Main cause
Batteries at end of service life.
Batteries installed incorrectly.
Lighting fixture is too close, or flu-
orescent lamp is burning out.
Use Sevick light (Hitachi).
Operating position/angle is inap-
propriate.
(L2)
Inspection method
Check visually.
Check melting of FU1, FU2.
Inspection method
Measure thermistor resistance
(dismount for check).
Inspect connector on PWB.
Check thermistor installation con-
dition.
Inspection method
Check operation mode.
Inspection method
Measure battery voltage.
Check battery direction.
Turn off light and check.
Check if Sevick light (Hitachi) is
used.
Operate within range specified in
manual.
Normal value/condition
There should be no cracking in
PWB or pattern.
There should be no open-circuit.
Normal value/condition
See on page 8-
There should be no open-circuit
or faulty contact.
Thermistor should not be discon-
nected.
Normal value/condition
Fan speed should change except
during dehumidifying operation,
ventilation, light dehumidifying
operation, internally normal oper-
ation
Normal value/condition
2.5 V or higher (two batteries in
series connection)
As indicated on battery compart-
ment.
Signal should be received when
light is turned off.
Signal may not be received
sometimes due to effect of Sevick
light.
Signal should be received within
range specified in manual.
3 – 6
AYXP26FRN
Short-circuit negative terminal of
capacitor (C33) and jumper wire
(JP16) using IC clip, etc.
Remedy
Replace PWB.
Replace PWB.
Remedy
Replace thermistor.
Replace thermistor.
Install correctly.
Remedy
Explain to user.
Remedy
Install new batteries.
Install batteries in indicated direc-
tion.
Change light position or install
new fluorescent lamp.
Replace light or change position.
Explain appropriate handling to
user.