Si21-205
Troubleshooting for Outdoor Unit (25/35 class)
Troubleshooting
193
6.15.10Capacitor Voltage Check
Check No.12
< Measuring method >
Before measuring, operate the unit for several minutes, then shut down the operation by force
using the circuit breaker.
If the unit is shut down using the remote controller instead of the circuit breaker, the
capacitor discharges the electric load, thus disallowing accurate measurement.
Note:
The charge section is applied with high voltage. Therefore, exercise caution during
measurement to prevent electric shock.
< Measuring positions >
Take measurements at the power transistor (+) and (-) terminals in the same way as described
in section 1.
Set the multi-tester to DC and VOLTAGE RANGE before measurement.
∗
Since capacitor (+) and (-) are connected to power transistor (+) and (-), capacitor voltage
can be measured at the power transistor (+) and (-) terminals.
6.15.11Power Transistor Check
Check No.13
Note:
Check to make sure that the voltage between the terminal of Power transistor (+) and (-) is
approx. 0 volt before checking power transistor.
< Measuring method >
Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the
connector, press the protrusion on the connector.
Then, follow the procedure below to measure resistance between power transistor (+) and (-)
and the U, V and W terminals of the compressor connector with a multi-tester. Evaluate the
measurement results for a pass/fail judgment.
<Power transistor check>
Negative (-) terminal of
tester (positive terminal
(+) for digital tester)
Power transistor
(+)
UVW
Power transistor
(-)
UVW
Positive (+) terminal of
tester (negative terminal
(-) for digital tester)
UVW
Power transistor
(+)
UVW
Power transistor
(-)
Normal resistance
Several k
Ω
to several M
Ω
(
∗
)
Unacceptable resistance
Short (0
Ω
) or open
Содержание Sky Air B-Series R-410A
Страница 7: ...Si21 205 vi Table of Contents ...
Страница 15: ...Models Si21 205 4 Model Name and Power Supply ...
Страница 16: ...Si21 205 Functions 5 Part 2 Functions 1 List of Functions 6 ...
Страница 35: ...Wireless Remote Controller Si21 205 24 Remote Controller ...
Страница 77: ...Settings Concerning Maintenance Si21 205 66 Field Setting FHQ B Service monitor LED Capacity setting adaptor ...
Страница 79: ...Settings Concerning Maintenance Si21 205 68 Field Setting Detail of PCB 2 ...
Страница 83: ...Maintenance Mode Setting Si21 205 72 Field Setting ...
Страница 239: ...Troubleshooting for Outdoor Unit 50 60 class Si21 205 228 Troubleshooting ...
Страница 246: ...Si21 205 FFQ25 35 50 60BV1B Removal Procedure 235 4 Remove the horizontal vane Step Procedure Points S2646 ...
Страница 283: ...Outdoor Unit 25 35 class Si21 205 272 Removal Procedure 2 Slide the MID upward and release Step Procedure Points ...
Страница 285: ...Outdoor Unit 25 35 class Si21 205 274 Removal Procedure 4 Remove the fan motor Step Procedure Points ...
Страница 321: ...Outdoor Unit 50 60 class Si21 205 310 Removal Procedure ...