Si18-525B
Service Check Function
Troubleshooting
325
2.6
Malfunction Code Indication by Outdoor Unit PCB
<Selection of setting item>
<Monitor mode>
<Confirmation of malfunction 1>
To enter the monitor mode, push the
MODE button (BS1) when in
“Setting mode 1”.
Push the SET button (BS2) and set
the LED display to a setting item.
Push the RETURN button (BS3)
once to display "First digit" of
malfunction code.
<Confirmation of malfunction 2>
Push the SET button (BS2) once to
display "Second digit" of malfunction
code.
Push the RETURN button (BS3) and
switches to the initial status of
“Monitor mode”.
∗
Push the MODE button (BS1) and
returns to “Setting mode 1”.
Contents of malfunction
Malfunction
code
<Confirmation of malfunction 3>
Push the SET button (BS2) once to
display "master or slave1 or slave2"
and "malfunction location".
Detail
description
on the
right.
(V3167)
HPS activated
Abnormal Pe
Detection of INV compressor lock
Instantaneous over current of DC fan motor
Detection of DC fan motor lock
EV1
EV2
Faulty Ta sensor
Abnormal Td
Faulty Tdi sensor
Faulty Ts sensor
Faulty Tb sensor
Faulty Tsh sensor
Faulty Pc sensor
Faulty Pe sensor
Inverter radiation fin over heated
Inverter instantaneous over current
Electronic thermal switch 1
Electronic thermal switch 2
Out-of-step
Speed down after startup
Lightening detection
Stall prevention (Current increasing)
Stall prevention (Faulty startup)
Abnormal wave form in startup
Out-of-step
Inverter transmission error
Faulty thermistor of inverter fin
Incorrect combination of inverter and fan driver
Gas shortage alarm
Insufficient inverter voltage
Inverter open phase (phase T)
Charging error of capacitor in inverter main circuit
Over voltage
Over current/Over voltage (Hard detection)
I/O transmission error
Indoor unit system malfunction in other system or
other unit of own system
Conflict of refrigerant type in indoor units
Incorrect wiring (Auto address error)
Malfunction of multi level converter, abnormality in
conflict check
Abnormal discharge pressure
Abnormal suction pressure
Compressor lock
Over load, over current,
abnormal lock of outdoor unit fan motor
Malfunction of electronic expansion valve
Faulty sensor of outdoor air temperature
Abnormal discharge pipe temperature
Faulty sensor of discharge pipe temperature
Faulty sensor of suction pipe temperature
Faulty sensor of heat exchanger temperature
Faulty sensor of subcool heat exchanger temperature
Faulty sensor of discharge pressure
Faulty sensor of suction pressure
Inverter radiation fin temperature rise
DC output over current
Electronic thermal switch
Stall prevention (Limit time)
Transmission error between inverter and outdoor unit
Faulty temperature sensor of inverter radiation fin
Incorrect combination of inverter and fan driver
Gas shortage
Abnormal power supply voltage
Abnormal SP-PAM
Abnormal latch circuitry
No implementation of test-run
Transmission error between indoor and outdoor unit
Transmission error of other system
Erroneous on-site setting
Faulty system function
Transmission error in accessory devices, conflict
in wiring and piping, no setting for system
E3
E4
E5
E7
E9
H9
F3
J3
J5
J6
J9
JA
JC
L4
L5
L8
L9
LC
P4
PJ
U0
U2
U3
U4
U9
UA
UH
UF
Summary of Contents for D-Series
Page 1: ...Si18 525B Applied Models Super Multi Plus Cooling only Super Multi Plus Heat Pump D Series ...
Page 33: ...List of Functions Si18 525B 20 List of Functions ...
Page 71: ...Specifications Si18 525B 58 Specifications ...
Page 117: ...Refrigerant Flow for Each Operation Mode Si18 525B 104 Refrigerant Circuit ...
Page 171: ...Indoor Unit SkyAir Models Si18 525B 158 Function ...
Page 207: ...Test Operation and Field Setting for RA Indoor Unit Si18 525B 194 Test Operation ...
Page 336: ...Si18 525B Service Check Function Troubleshooting 323 ...
Page 469: ...Wiring Diagrams Si18 525B 456 Appendix ...
Page 475: ...Si18 525B vi Index ...
