Troubleshooting - Carrier 40TGF UP Series Installation Manual

11

Troubleshooting

Procure a wired remote controller (sold separately) and diagnose failure.
Temporally troubleshooting can be done with LED display on signal receiving unit. For
detail troubleshooting determination, connect a wired remote controller and diagnose
with it.
First checking
1. Check the power supply voltage
Make sure that the power supply is within the rated
range. Should a voltage between 380V and 415V
be applied to the system interconnection terminal
block, the controller board of the outdoor unit would
detect an overvoltage fault and shut off the power
supply to the indoor unit. Any failure of the controller
board in the outdoor unit may also cause a similar
symptom.
2. Check for wrong wiring of the system
interconnection wires
Make sure that the indoor and outdoor units are
connected with the system interconnection wires of
the matching terminal numbers. If there is any
mismatch, they won't run.
Any wrong wiring will never result in damage to the
air conditioner. If you find any mismatches in wiring,
turn off the power, rewire the system interconnection
wires correctly and check to see if the air conditioner
operates properly.
Confirmation and check
When an error occurred in the air conditioner, the
check code and the indoor unit No. appear on the
display part of the remote controller.
The check code is only displayed during the operation.
If the display disappears, operate the air conditioner
according to the following "Confirmation of error log" for
confirmation.
Check code Indoor unit No. in which
an error occurred
43-EN
Confirmation of error log
When an error occurred on the air conditioner, the error
log can be confirmed with the following procedure.
(The error log is stored in memory up to 4 errors.)
The log can be confirmed from both operating state
and stop state.
2
3
1
1
Procedure
When pushing and buttons at the same time for
4 seconds or more, the following display appears.
If [Service check] is displayed, the mode enters in
the error log mode.
[01 : Order of error log] is displayed in CODE No.
window.
[Check code] is displayed in CHECK window.
[Indoor unit address in which an error occurred] is
displayed in Unit No.
2
Procedure
Every pushing of button used to set
temperature, the error log stored in memory is
displayed in order.
The numbers in CODE No. indicate CODE No. [01]
(latest) → [04] (oldest).
REQUIREMENT
Do not push button because all the error log of the
indoor unit will be deleted.
3
Procedure
After confirmation, push button to return to the
normal display.
Check codes and parts to be checked
Wired Wireless remote
remote controller
controller Sensor block display of
display receiving unit
Main defective parts
Operation Timer Ready
GR GR OR
Indication Flashing
No header remote
controller
E01
Remote controller
communication error
Remote controller
E02
transmission error
Indoor unit-remote
E03 controller regular
communication error
Indoor unit-outdoor
unit serial
communication error
E04
IPDU-CDB
communication error
Duplicated indoor
E08
addresses
Duplicated header
E09
remote controllers
CPU-CPU
E10
communication error
Header indoor unit-
indoor follower unit
E18
regular communication
error
IPDU communication
E31
error
Indoor unit heat
F 0 1 A L T exchanger sensor
(TCJ) error
Indoor unit heat
F 0 2 A L T exchanger sensor (TC)
error
Outdoor unit discharge
F 0 4 A L T temp. sensor (TD)
error
Outdoor unit temp.
F 0 6 A L T
sensor (TE / TS) error
F 0 7 A L T T L s e n s r o
Outdoor unit outside
F 0 8 A L T
air temp. sensor error
Indoor unit room temp.
F 1 0 A L T
sensor (TA) error
F 1 2 A L T T S s e n s r o
F 1 3 A L T H e t a s n i k s
– 22 –
Judging
Parts to be checked / error description
device
Incorrect remote controller setting --- The header remote
controller has not been set (including two remote
Remote
controllers).
controller
No signal can be received from the indoor unit.
System interconnection wires, indoor P.C. board, remote
Remote
controller
controller
--- No signal can be sent to the indoor unit.
Remote controller, network adapter, indoor P.C. board --
Indoor - No data is received from the remote controller or
network adapter.
System interconnection wires, indoor P.C. board, outdoor
Indoor P.C. board --- Serial communication error between indoor
unit and outdoor unit
Indoor address setting error --- The same address as the
Indoor
self-address was detected.
Remote controller address setting error --- Two remote
controllers are set as header in the double-remote
Remote
controller control.
controller
(* The header indoor unit stops raising alarm and follower
indoor units continue to operate.)
Indoor P.C. board --- Communication error between main
Indoor
MCU and motor microcomputer MCU
Indoor P.C. board --- Regular communication is not
Indoor
possible between header and follower indoor units.
Outdoor Communication error between IPDU and CDB
Heat exchanger sensor (TCJ), indoor P.C. board ---
Indoor Open-circuit or short-circuit of the heat exchanger sensor
(TCJ) was detected.
Heat exchanger sensor (TC), indoor P.C. board --- Open-
Indoor circuit or short-circuit of the heat exchanger sensor (TC)
was detected.
Outdoor temp. sensor (TD), outdoor P.C. board --- Open-
Outdoor circuit or short-circuit of the discharge temp. sensor was
detected.
Outdoor temp. sensors (TE / TS), outdoor P.C. board ---
Outdoor Open-circuit or short-circuit of the heat exchanger temp.
sensor was detected.
TL sensor may be displaced, disconnected or short-
e r r r o O u d t o r o
circuited.
Outdoor temp. sensor (TO), outdoor P.C. board --- Open-
Outdoor circuit or short-circuit of the outdoor air temp. sensor was
detected.
Room temp. sensor (TA), indoor P.C. board --- Open-
Indoor circuit or short-circuit of the room temp. sensor (TA) was
detected.
TS sensor may be displaced, disconnected or short-
e r r r o O u d t o r o
circuited.
Abnormal temperature was detected by the temp. sensor
e n s r o e r r r o O u d t o r o
of the IGBT heat sink.
Air
conditioner
status
*
*
Auto-reset
Auto-reset
Auto-reset
*
Auto-reset
Auto-reset
Entire stop
Auto-reset
Auto-reset
Entire stop
Entire stop
Entire stop EN
Operation
continued
EN
Auto-reset
Entire stop
ID
Entire stop
44-EN