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SiENBE04-925_A
Check
Service Diagnosis
123
5.1.10 Capacitor Voltage Check
Check No.12
Before this check, be sure to check the main circuit for short circuit.
With the circuit breaker still on, measure the voltage according to the drawing of the model in
question. Be careful never to touch any live parts.
5.1.11 Power Module Check
Check No.13
Note:
Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx.
0 V before checking.
Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the
connector, press the protrusion on the connector.
Follow the procedure below to measure resistance between the terminals of the DB1 and
the terminals of the compressor with a multi-tester. Evaluate the measurement results for a
judgment.
OL lead wire
Thermistor lead wire
Fan motor lead wire
Compressor lead wire
Reactor lead wire
Four way valve
lead wire
Electronic expansion valve
lead wire
Multimeter
(DC voltage range)
(R5222)
Negative (–) terminal of
tester (positive terminal
(+) for digital tester)
DB1 (+)
UVW
DB1 (–)
UVW
Positive (+) terminal of
tester (negative terminal
(–) for digital tester)
UVW
DB1 (+)
UVW
DB1 (–)
Resistance in OK
several k
Ω
~ several M
Ω
Resistance in NG
0
Ω
or
∞
SIENBE04-925_A_FRONT.pdf 138
24/02/2011 13:53:58
Содержание Inverter FTXL20G2V1B
Страница 8: ...SiENBE04 925_A vi Table of Contents...
Страница 14: ...Introduction SiENBE04 925_A xii...
Страница 15: ...SiENBE04 925_A List of Functions 1 Part 1 List of Functions 1 Functions 2...
Страница 17: ...SiENBE04 925_A Specifications 3 Part 2 Specifications 1 Specifications 4...
Страница 20: ...Specifications SiENBE04 925_A 6 Specifications...
Страница 186: ...SiENBE04 925_A Outdoor Unit RXL20G2V1B Removal Procedure 171 4 Feature of the thermistors Step Procedure Points R9356...