SiBE041010EA
Check
Service Diagnosis
92
5.11 Outdoor Fan System Check
Check No.19
DC motor
5.12 Main Circuit Short Check
Check No.20
Note:
Make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approximately
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
Ω
, short circuit occurs on the main circuit.
(R15001)
YES
YES
NO
NO
Outdoor fan
system is
functioning.
Check the outdoor fan system.
Go to
Check No. 16
.
Outdoor fan running?
Fan motor
lead wire connector
disconnected?
Reconnect the connector.
Negative (–) terminal of
tester (positive terminal
(+) for digital tester)
~
(2, 3)
+
(4)
~
(2, 3)
–
(1)
Positive (+) terminal of
tester (negative terminal
(–) for digital tester)
+
(4)
~
(2, 3)
–
(1)
~
(2, 3)
Resistance is OK.
several k
Ω
~ several M
Ω
∞
∞
several k
Ω
~ several M
Ω
Resistance is NG.
0
Ω
or
∞
0
0
0
Ω
or
∞
(R19120)
Tester
–~
~
+
1
2
3
4
–
+
