Troubleshooting - Toshiba VN-M150HE Installation Manual

Air to Air Heat Exchanger
14

Troubleshooting

Confirmation and check
When an error occurred in the Air to Air Heat
Exchanger, the check code and the unit No. of Air to Air
Heat Exchanger 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 to Air Heat
Exchanger according to the following "Confirmation of
error history" for confirmation.
* Unit No. of Air to Air Heat Exchanger is 31-OO.
Check code Unit No. of the Air to Air Heat
Exchanger with a problem
Confirmation of error history
When an error occurred on the Air to Air Heat
Exchanger, the error history can be confirmed with the
following procedure. (The error history is stored in
memory up to 4 troubles.)
The error can be confirmed from both operating status
and stop status.
2
3
1
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 trouble history mode.
• [01: Order of error history] is displayed in CODE
No. window.
• [Check code] is displayed in CHECK window.
• [Air to Air Heat Exchanger address in which an
error occurred] is displayed in Unit No.
* Unit No. of Air to Air Heat Exchanger is 31-OO.
47-EN
AMP Air Conditioning
Installation Manual
2
Every pushing of button used to set
temperature, the error history 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 history of
the Air to Air Heat Exchanger will be deleted.
3
After confirmation, push button to return
to the usual display.
1
Air to Air Heat Exchanger
Check codes and parts to be checked
Wired remote
controller Main defective parts
display
No header remote Remote
controller controller
E01
Remote controller
communication error
Remote controller Remote
E02
transmission error controller
Indoor unit-remote Indoor
E03 controller regular
communication error
Duplicated indoor Indoor
E08
addresses
Duplicated header Remote
remote controllers controller
E09
Header indoor unit-indoor Indoor
E18 follower unit regular
communication error
Air to Air Heat Exchanger Air to Air Heat
F17
(TOA) error Exchanger
Air to Air Heat Exchanger Air to Air Heat
F18
(TRA) error Exchanger
Indoor unit, other P.C. Indoor
F29
board error
Duplicated header indoor Indoor
L03
units
Indoor group address not Indoor
L08
set
L09 Indoor power level not set Indoor
LAN communication error Indoor
L20
Other indoor unit error Indoor
P31
* "Indoor" in "Judging device" refers to the Air to Air Heat Exchanger or the air conditioner.
– 24 –
Installation Manual
Judging
Parts to be checked / error description
device
Incorrect remote controller setting --- The header remote
controller has not been set (including two remote controllers).
No signal can be received from the indoor unit.
System interconnecting wires, indoor P.C. board, remote
controller --- No signal can be sent to the indoor unit.
Remote controller, network adapter, indoor P.C. board --- No
data is received from the remote controller or network adapter.
Indoor address setting error --- The same address as the self-
address was detected.
Remote controller address setting error --- Two remote
controllers are set as header in the double-remote controller
control.
(* The header indoor unit stops raising alarm and follower indoor
units continue to operate.)
Indoor P.C. board --- Regular communication is not possible
between header and follower indoor units or between twin
header (main) and follower (sub) units.
Outdoor Air sensor (TOA), indoor P.C. board --- Open-circuit or
short-circuit of the heat exchanger sensor (TOA) was detected.
Return Air sensor (TRA), indoor P.C. board --- Open-circuit or
short-circuit of the heat exchanger sensor (TRA) was detected.
Indoor P.C. board --- EEPROM error
Indoor address setting error --- There are two or more header
units in the group.
Indoor address setting error --- Indoor address group has not
been set.
Indoor power level has not been set.
Address setting, central control remote controller, network
adapter --- Duplication of address in central control
communication
Another indoor unit in the group is raising an alarm.
E03/L07/L03/L08 alarm check locations and error description
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EN
48-EN