Daikin RXG20L2V1B - Main Circuit Short Check

SiBE041401E Check
Service Diagnosis 100
5.12 Main Circuit Short Check
Check No.20
Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is
approximately 0 V before checking.

Measure the resistance between the pins of the DB1 referring to the table below.
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If the resistance is
∞
or less than 1 kW, short circuit occurs on the main circuit.
20/25/35 class
50 class
Negative (–) terminal of multimeter
(positive terminal (+) for digital
multimeter)
~
(2, 3)
+
(4)
~
(2, 3)
–
(1)
Positive (+) terminal of multimeter
(negative terminal (–) for digital
multimeter)
+
(4)
~
(2, 3)
–
(1)
~
(2, 3)
Resistance is OK.
several kΩ
~ several MΩ
∞∞
several kΩ
~ several MΩ
Resistance is NG. 0 Ω or
∞
000 Ω or
∞
(R19933)
1
2
3
4
Multimeter
–~~+
–
+
Multimeter
–~~+
1234
–
+
(R19943)