Outdoor Fan System Check; Main Circuit Short Check - Daikin FTXS20K2V1B Service Manual

Check

5.11 Outdoor Fan System Check

Check No.19 DC motor

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.
Negative (–) terminal of
tester (positive terminal
(+) for digital tester)
Positive (+) terminal of
tester (negative terminal
(–) for digital tester)
Resistance is OK.
Resistance is NG.
108
Check the outdoor fan system.
Outdoor fan running?
YES
Outdoor fan system is functioning.
Measure the resistance between the pins of the DB1 referring to the table below.
If the resistance is ∞ or less than 1 kΩ, short circuit occurs on the main circuit.
Fan motor
NO
lead wire connector
disconnected?
NO
Go to Check No. 16.
~ +
(2, 3) (4)
+ ~
(4) (2, 3)
several kΩ
∞
~ several MΩ
∞
0 Ω or
0
SiBE041134
YES
Reconnect the connector.
(R15001)
–
~
(1)
(2, 3)
–
~
(1)
(2, 3)
several kΩ
∞
~ several MΩ
∞
0 Ω or
0
1
Tester
2
3
4
(R12035)
Service Diagnosis