-50-
6.4
Malfunction check monitor
6.4.1
The times of compressor ON as well as the check code are displayed on the time display area by
pressing CHECK key.
Judgement from operation status
(a)
Unit No.
Check code
[CHECK] switch
Provides check code display by
pressing for one second and indoor
microcomputer reset by pressing
for 5 seconds.
*
Remote controller clear by press-
ing the key for 10 sec. Check code
is cleared (normally not used).
(a) Reset key (pushed by a needle and
the like). Resetting remote controller
(to the initial setting).
* With drain pump units only
Note :
If the red LED on the remote controller does not flash when the system is switched on, then the wiring to the outdoor unit needs to be
checked to ensure that the three phases are wired in the correct sequence. (RAV-262AH8 unit only.)
OPERATION STATUS
COD
CAUSE
1.
Compressor stays off in cooling: it is not turned off in
heating.
0C
Open-circuit in room temperature
sensor.
Compressor stays off in heating: it is not turned off in
cooling.
Short-circuit in room temperature
sensor.
2
Indoor fan stays off in heating.
0d
Open-ciruit in indoor heat-exchanger
sensor.
Outdoor fan continues ON-OFF operation in
heating.
Short-circuit in indoor heat-exchanger
sensor.
3.
Though indoor unit operates, outdoor unit remains
off.
04
Abnormality in connecting cable
between indoor and outdoor units.
4.
Indoor fan does not work in heating operation.
Warm air comes out in cooling operation.
08
4-way valve coil burnt out, pipe
clogged, abnormality in indoor
heat-exchange sensor.
5.
Indoor fan at LOW speed in cooling operation with
the outdoor remaining in stoppage.
09
Refridgerant gas in shortage.
abnormality in indoor heat-exchange
sensor.
6.
Full stop
18
Open or short-circuit in outdoor TE
sensor.
7.
Full stop
19
Open or short-circuit in indoor TL
sensor.
8.
Full stop
21
Pressure switch does not reset within
the set time.
9
I d
it d
t
t
t ll
99
Abnormality in connecting cable
b t
t
t ll
d i d
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