Main Circuit Short Check - Daikin FTXL20G2V1B Service Manual

SiENBE04-925_A

5.1.13 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 kΩ, short circuit occurs on the main circuit.
(–) terminal of the tester
(in case of digital,
(+) terminal)
(+) terminal of the tester
(in case of digital,
(–) terminal)
Resistance in OK
Resistance in NG
20 class
25 class
Service Diagnosis
~ +
(2, 3) (4)
+ ~
(4) (2, 3)
several kΩ
∞
~ several MΩ
∞
0 Ω or
0
Check
–
~
(1)
(2, 3)
– ~
(1)
(2, 3)
several kΩ
∞
~ several MΩ
∞
0 Ω or
0
1
Tester
2
3
4
(R12035)
1
Tester
2
3
4
(R12266)
125