Daikin 4MXS-R Series User Manual

Check SiUS121736EA
217 Service Diagnosis
8.12 Outdoor Fan System Check
Check No.19 DC motor
8.13 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 kΩ, short circuit occurs on the main circuit.
(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 kΩ ~ several MΩ
Resistance is NG. 0 Ω or
∞
(R24592)
1
2
3
4
Multimeter
–~~+
–
+

Daikin 4MXS-R Series Specifications

General

Brand	Daikin
Model	4MXS-R Series
Category	Air Conditioner
Language	English