Outdoor Fan System Check; Main Circuit Short Check - Daikin FTX-N Series Service Manual

Check

8.11 Outdoor Fan System Check

Check No.19
DC motor

8.12 Main Circuit Short Check

Check No.20
Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is about
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.
Positive terminal (+) of
digital multimeter
Negative terminal (–) of
digital multimeter
Resistance is OK.
Resistance is NG.
09 class
Multimeter
191
Check the outdoor fan system.
Is
the outdoor fan
running?
YES
Outdoor fan system is functioning.
4
3
2
1
NO Fan motor lead
wire connector
disconnected?
YES
Reconnect the connector.
~ (2, 3) + (4)
+ (4) ~ (2, 3)
several k ~ several M
0  or 
SiUS091601EA
NO
Go to Check No. 16.
(R21195)
~ (2, 3) – (1)
– (1) ~ (2, 3)
(R20698)
Part 6 Service Diagnosis