SiUS122226E
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.
Part 6 Service Diagnosis
Check the outdoor fan system.
Is
the outdoor fan
running?
YES
Outdoor fan system is functioning.
Fan motor lead
NO
wire connector
disconnected?
YES
Reconnect the connector.
~ (2, 3)
+ (4)
+ (4)
~ (2, 3)
several k ~ several M
0 or
NO
Go to Check No. 16.
(R21195)
~ (2, 3)
– (1)
– (1)
~ (2, 3)
Check
233