Main Circuit Short Check - Daikin FTXS30LVJU Service Manual

Check

5.13 Main Circuit Short Check

Check No.20
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 referring to the table below.
 If the resistance is  or less than 1 k, short circuit occurs on the main circuit.
Negative (–) terminal of
tester (positive terminal
(+) for digital tester)
Positive (+) terminal of
tester (negative terminal
(–) for digital tester)
Resistance is OK.
Resistance is NG.
09/12 class
151
~ (2, 3) + (4)
+ (4) ~ (2, 3)
several k

~ several M

0  or
0
SiUS091133
–
~ (2, 3) (1)
–
(1) ~ (2, 3)
several k

~ several M

0 0 or
1
Tester
2
3
4
(R12035)
Service Diagnosis