Check
SiUS042113E
142
Part 6 Service Diagnosis
5.10 Discharge Pressure Check
Check No.18
5.11 Outdoor Fan System Check
Check No.19
DC motor
5.12 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.
(R21121)
YES
YES
YES
NO
NO
NO
NO
YES
Is the air filter or
indoor/outdoor heat
exchanger dirty?
Is the
connection pipe deformed?
Is the stop valve
open?
High?
Replace the compressor.
Open the stop valve.
Replace the pipe installed at
the site.
Clean the dirty air filter or
indoor/outdoor heat exchanger.
Replace the compressor.
Discharge pressure check
(R21195)
YES
NO
NO
YES
O
u
tdoor fan system is f
u
nctioning.
Check the o
u
tdoor fan system.
Reconnect the connector.
Is
the o
u
tdoor fan
r
u
nning?
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
Summary of Contents for FTXM-V Series
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Page 96: ...Troubleshooting SiUS042113E 92 Part 6 Service Diagnosis Reference Check No 01 Refer to P 134...
Page 150: ...Check SiUS042113E 146 Part 6 Service Diagnosis 18 24 class R24539 DC DC W V U...
Page 166: ...Piping Diagrams SiUS042113E 162 Part 8 Appendix RXM24VVJU 3D132217...
Page 171: ...SiUS042113E Operation Limit Part 8 Appendix 167 3 Operation Limit RXM09 12 18 24VVJU 3D133582A...
