SiBE28-804
Troubleshooting by Remote Controller Display / LED Display
Troubleshooting
235
Outdoor Unit: Check for Power Transistor
Judgment according to the continuity check by using an analog tester:
(1) Do not touch the charged area (high voltage) for 10 minutes after turning the power supply
off.
(2) If you must touch such an area, make sure that the power supply voltage of power transistor
is 50 V or less.
(3) Disconnect the connector of the outdoor unit fan motor.
When the outdoor unit fan is rotating against a strong wind, the condenser is charged and
electric shock may result. Therefore, disconnect the connector from the outdoor unit fan
motor after confirming that the outdoor unit fan has stopped.
(4) Before measuring the continuity, disconnect the connection between compressor and power
transistor.
(5) Measure the continuity in the following procedure.
[Judgment] Normal if the continuity check results in the following.
Power transistor
(on inverter PC
board)
*
If there is continuity, the resistance should be the same as each phase.
*
If a digital tester is used for the measurement of continuity,
∞
and continuity may be
reversed.
Check No.11
C+ — U
Continuity
C+
— V
Continuity
C+
— W
Continuity
U —
C+
∞
V —
C+
∞
W —
C+
∞
C- — U
∞
C- — V
∞
C- — W
∞
U —
C-
Continuity
V — C-
Continuity
W — C-
Continuity
∗
∗
(S2678)
Summary of Contents for FHQ100BUV1B x 2
Page 13: ...SiBE28 804 2 ...
Page 19: ...Model Name and Power Supply SiBE28 804 8 General Information ...
Page 29: ...Specifications SiBE28 804 18 Specifications ...
Page 33: ...Wired Remote Controller SiBE28 804 22 Remote Controller 1 2 Installation ...
Page 34: ...SiBE28 804 Wired Remote Controller Remote Controller 23 ...
Page 93: ...Outdoor Unit Fan Speed Control SiBE28 804 82 Functional Description ...
Page 131: ...Test Run and Operation Data SiBE28 804 120 Test Operation ...
Page 251: ...Troubleshooting by Remote Controller Display LED Display SiBE28 804 240 Troubleshooting ...
Page 277: ...PCB Layout SiBE28 804 266 Appendix ...
Page 297: ...RZQ100 140C7 RZQS125 140C7V1B SiBE28 804 286 Removal Procedure ...
Page 311: ...SiBE28 804 iv Index ...