Daikin SiBE041010 - Main Circuit Short Check

SiBE041010 Check
Service Diagnosis 99
5.1.14 Main Circuit Short Check
Check No.29
Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx.
0 V before checking.

Measure the resistance between the pins of the DB1 as below.

If the resistance is
∞
or less than 1 k
Ω
, short circuit occurs on the main circuit.
(–) terminal of the tester
(in case of digital,
(+) terminal)
~
(2, 3)
+
(4)
~
(2, 3)
–
(1)
(+) terminal of the tester
(in case of digital,
(–) terminal)
+
(4)
~
(2, 3)
–
(1)
~
(2, 3)
Resistance in OK
several kΩ
~ several MΩ
∞∞
several kΩ
~ several MΩ
Resistance in NG 0 Ω or
∞
000 Ω or
∞
Tester
–~~+
1
2
3
4
–
+
(R12025)