Daikin FDMQ-R Series Service Manual

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

Daikin FDMQ-R Series Specifications

General

Brand	Daikin
Model	FDMQ-R Series
Category	Air Conditioner
Language	English