*
Press the remote controller's "CHECK" button twice consecutively to be able to run a self-check. See the chart below for content of error code displays.
LCD
Nonconformity Content
P1
Suction sensor error
P2
Open/short in liquid temp thermistor
P4
Drain sensor error
P5
Drain overflow safeguard operation
P6
Freezing/overheating safeguard operation
See the chart below for details of the LED displays (LED 1, 2, 3) on the indoor substrate.
LED 1 (microcomputer power supply)
LED 2 (remote controller feed)
LED 3 (indoor and outdoor signals)
12.3. Self-check
Retrieve the error history of each unit using the remote controller.
1 Switch to the self check mode.
When the H [CHECK] button is pressed twice successively within three sec-
onds, the display shown below appears.
Self check address or self check refrigerant address
3 Self check result display <Error history> (For the contents of the error code, refer to 13. Troubleshooting, error code list.)
Error code 4 digits or error code 2 digits
4 Error history reset
The error history is displayed in 3 Self check results display.
When the D [
MENU] button is pressed twice successively within three sec-
onds, the self check address or refrigerant address flashes.
5 Self check reset
There are the following two ways of resetting self check.
Press the H [CHECK] button twice successively within three seconds → Resets self check and returns to the state before self check.
ON/OFF] button → Self check resets and indoor units stop.
Press the I [
12.4. Remote controller check
If operation cannot be carried out from the remote controller, use this function to diagnose the remote controller.
1 First check the power mark.
When normal voltage (DC12 V) is not applied to the remote controller, the power
mark goes off.
When the power mark is off, check the remote controller wiring and the indoor
unit.
2 Switch to the remote controller check mode.
When the H [CHECK] button is held down for five seconds or longer, the dis-
play shown below appears.
18
LCD
P8
Tube temperature error
P9
Open/short in condenser/evaporater temp thermistor
U0 ~ UP
Outdoor unit nonconformity
F1 ~ FA
Outdoor unit nonconformity
E0 ~ E5
Signal error between remote controller and
indoor unit
Displays the ON/OFF of power for control. Check that this is lit during normal use.
Displays the ON/OFF of feed to wired remote controller. Is only lit for indoor unit linked to outdoor unit with address "00".
Displays signal between indoor and outdoor units. Check that this is flashing during normal use.
ERROR CODE
<When there is no error history>
ERROR CODE
ERROR CODE
(When operation is prohibited, this operation is ineffective.)
Nonconformity Content
E6 ~ EF
FFFF
2 Set the address or refrigerant address No. you want to self check.
When the F [
TEMP. (
creases and increases between 01 and 50 or 00 and 15. Set it to the address
No. or refrigerant address No. you want to self check.
Approximately three seconds after the change operation, the self check refrig-
erant address changes from flashing to a steady light and self check begins.
Address 3 digits or unit address No. 2 digits
<When opposite side does not exist>
ERROR CODE
ERROR CODE
When the error history was reset, the display shown below appears.
When error history reset failed, the error contents are displayed again.
ERROR CODE
Power mark
When the A [FILTER] button is pressed, remote controller check begins.
LCD
Nonconformity Content
Signal error between indoor and outdoor
units
- - - -
No error history
No relevant unit
) and (
)] buttons are pressed, the address de-