How To Operate The Outdoor Unit Independently; General Troubleshooting Chart - Bosch CLC6101i-W 50 HE Service Manual

Climate Class 6100i / 6000i / 8100i / 8000i

[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.)
If these pads are connected and Power is applied to N and 1 on terminal board.
Then the outdoor unit operate in "TEST COOL 40Hz" mode.

[5] GENERAL TROUBLESHOOTING CHART

* These models have following thermistors
INDOOR UNIT OUTDOOR UNIT
TH1, TH2 TH1, TH2, TH3, TH4, TH5
The errors for the thermistors that are not mentioned above are irrelevant.
These indoor units don't have power relay.
1.Indoor unit does not turn on
Main cause
Cracked PWB.
(Cracked pattern)
Open-circuit in FU1
(250 V, 3.15 A)
2.Indoor unit fan does not operate
Main cause
Open-circuit in heat exchanger
thermistor (TH2) (in heating opera-
tion)
Disconnected heat exchanger therm-
istor (TH2) (in heating operation)
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 fluo-
rescent lamp is burning out.
Soldering Side
C6
L2 L3
C5
Inspection method
Check visually.
Check melting of FU1.
Inspection method
Measure thermistor resistance
(dismount for check).
Inspect connector on PWB.
Check thermistor installation
condition.
Inspection method
Check operation mode.
Inspection method
Measure battery voltage.
Check battery direction.
Turn off light and check.
Normal value/condition
There should be no cracking in
PWB or pattern.
There should be no open-cir-
cuit.
Normal value/condition
Refer to THERMISTOR TEM-
PERATURE CHARACTERIS-
TICS-1
There should be no open-cir-
cuit or faulty contact.
Thermistor should not be dis-
connected.
Normal value/condition
Fan speed should change
except during dehumidifying
operation, ventilation, light de-
humidifying operation, internal-
ly normal operation
Normal value/condition
2.5 V or higher (two batteries in
series connection)
As indicated on battery com-
partment.
Signal should be received
when light is turned off.
4-6
Remedy
Replace PWB.
Replace PWB.
Remedy
Replace thermistor.
Replace thermistor.
Install correctly.
Remedy
Explain to user.
Remedy
Install new batteries.
Install batteries in indicated
direction.
Change light position or install
new fluorescent lamp.