Daikin FTXS20G2V1B - Main Circuit Short Check

Check SiENBE04-808_A
153 Service Diagnosis
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.
20/25/35 class
42 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 in OK
several kΩ
~ several MΩ
∞∞
several kΩ
~ several MΩ
Resistance in NG 0 Ω or
∞ 000 Ω or ∞
(R12035)
Tester
–~~+
1
2
3
4
–
+
(R12266)
Tester
–~~+
1
2
3
4
–
+
SiENBE04-808_A.pdf 165 21/02/2011 13:20:04