Specifications

Test Operation SiBE341027
66 Test Operation
[Remote controller displays error code]
Error code Installation trouble Corrective action
E3 F3
E4 UF
The outdoor unit stop valve has not been opened. Check that the gas and liquid side stop valves are open.
P8
P9
PA
Instruction to perform additional refrigerant
charging during check operation (not an error)
Follow the procedure for check operation (refer to the
previous page) and perform additional refrigerant charge.
PJ
DIP switch (DS1, DS2) setting is incorrect after the
outdoor unit PCB (A1P) was replaced.
Follow the instructions in "Field setting from outdoor unit"
(refer to P.68) and make the correct setting.
U1 Phase of outdoor unit power is reversed.
Reverse 2 of the 3 phases and connect with the correct
phases.
U3
Check operation has not been completed
normally.
Perform check operation again.
U4
Power is not being supplied (including cases of
open phase) to an outdoor unit or indoor unit.
Supply power correctly to the outdoor units and indoor units.
U7
UA
A model which cannot be connected in a multi-
outdoor-unit system has been connected in a
multi-outdoor-unit system.
Change to individual piping, and disconnect the wiring from
the multi-outdoor-unit terminals (Q1, Q2).
U9
There is trouble at another indoor unit within the
same system.
An error code is displayed on the remote controller, or else
trouble has occurred at an indoor unit where an error code
is not displayed on the remote controller. Correct the trouble
at the corresponding indoor unit. If no error code is
displayed on the remote controller, press the INSPECTION/
TEST button on the remote controller to display the error
code. Check that the refrigerant piping system and interunit
wiring connections match.
UF
Wrong connection in piping or wiring between
units.
Complete the transmission wiring work, then perform check
operation again.
If an outdoor - outdoor transmission wire was
connected or disconnected during check operation
Connect the interunit wiring (cool/heat select remote
controller, inside-outside, outside-outside, multi-outside-
unit).
UH Wrong wiring between units
If voltage of 100V or higher was applied to the outdoor unit
PCB (A1P), the outdoor unit PCB or indoor unit PCB may be
damaged. If the error display "UH" appears even after the
connection was corrected, the PCB must be replaced.