Daikin FTXN09KEVJU - Main Circuit Short Check

SiUS041111 Check
Service Diagnosis 125
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 approx.
0 V before checking.
 Measure the resistance between the pins of the DB1 as below.
 If the resistance is  or less than 1 kW, short circuit occurs on the main circuit.
09/12 class
(–) 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 is OK.
several k
~ several M

several k
~ several M
Resistance is NG. 0  or  000 or 
Tester
–~~+
1
2
3
4
–
+
(R14675)