SiAF332111E Test Operation (4/5/10/12 HP Models)
Part 5 Field Settings and Test Operation 169
No display on the remote controller
Error in connection/communication among indoor unit remote controllers. Check if there is
any disconnection or loosening of connectors.
For the plumber
For the electrician
Before giving the air conditioner back to the customer after a test operation, please make sure
that the casing is securely in place and the screws are well fastened.
LC
14
Transmission between outdoor unit main PCB and
inverter PCB
Check the connection.
19
Transmission between outdoor unit main PCB and
fan PCB 1
Check the connection.
24
Transmission between outdoor unit main PCB and
fan PCB 2
Check the connection.
P1
01
02
03
Inverter unbalanced power supply voltage Check if the power supply meets the specifications.
U1
01 Opposite phase power supply phase error Calibrate phase sequence.
04 Opposite phase power supply phase error Calibrate phase sequence.
U2
01 Inverter insufficient voltage Check if the power supply meets the specifications.
02 Inverter power supply phase missing Check if the power supply meets the specifications.
U3 03
System test operation not yet executed
(Test operation cannot be executed.)
Execute system test operation.
U4
01 Q1/Q2 or indoor-outdoor units wiring error Check (Q1/Q2) wiring.
03 Q1/Q2 or indoor-outdoor units wiring error Check (Q1/Q2) wiring.
04 System test operation ends abnormally. Re-execute the test operation.
U9 01
System mismatch
Mismatched indoor unit models used
(R-410A, R-407C, RA, Hydrobox, etc.).
Defective indoor unit
Check if there are any other defective indoor units
and verify if the indoor unit combination meets
requirements.
UA
03
Defective indoor unit connection or mismatched
models (R-410A, R-407C, RA, Hydrobox, etc.).
Check if there are any other defective indoor units
and verify if the indoor unit combination meets
requirements.
18
Defective indoor unit connection or mismatched
models (R-410A, R-407C, RA, Hydrobox, etc.).
Check if there are any other defective indoor units
and verify if the indoor unit combination meets
requirements.
31 Wrong combination of units (multi-unit system) Check the compatibility of unit types.
49 Wrong combination of units (multi-unit system) Check the compatibility of unit types.
UF
01
Defective automatic addressing (inconsistency) Check if the quantity of connected units is below the
maximum number of units that can be connected
(through monitoring mode) or if initiation is complete.
05
Stop valve closed or defective
(During system test operation)
Open the stop valve.
UH 01
Defective automatic addressing (inconsistency) Check if the quantity of connected units is below the
maximum number of units that can be connected
(through monitoring mode) or if initiation is complete.
Error code
Description Solution
Primary
code
Sub code
To Next Page
Loading...
