˚C
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK
DAY
MONITOR/SET
CLOCK
ON/OFF
Operation mode display
“TEST RUN” and “OPERATION MODE” are
displayed alternately.
Timer stops test run after two hours.
Piping temperature display
Stop test run by pressing the [
ON/OFF] button.
During test run, the RUN lamp remains on.
[TEST] button
[
] button
* Press the remote controller’s “CHECK” button twice consecutively to be able to run a self diagnosis. See the chart
below for content of error code displays.
LCD
Nonconformity content
P1
Suction sensor error
P2
Tubing (liquid) sensor error
P4
Drain sensor error
P5
Drain overflow safeguard operation
P6
Freezing/overheating safeguard operation
LCD
Nonconformity content
P8
Tube temperature error
P9
Tube (2-phase tube) sensor error
U0 ~ UP
Outdoor unit nonconformity
F1 ~ FA
Outdoor unit nonconformity
E0 ~ E5
Signal error between remote
controller and indoor unit
LCD
Nonconformity content
E6 ~ EF
Signal error between indoor and
outdoor units
----
No error history
FFFF
No relevant unit
See the chart below for details of the LED displays (LED 1, 2, 3) on the indoor substrate.
LED 1 (microcomputer power supply) Displays the ON/OFF of power for control. Check that this is lit during normal use.
LED 2 (remote controller feed)
Displays the ON/OFF of feed to wired remote controller. Is only lit for indoor unit linked to outdoor unit with address “00”.
LED 3 (indoor and outdoor signals)
Displays signal between indoor and outdoor units. Check that this is flashing during normal use.
Symptoms
Remote Controller Display
Outdoor Substrate LED Display
Cause
Remote controller is displaying “PLEASE WAIT”, and
operation is not possible.
After power is turned ON, “PLEASE WAIT” is dis-
played for 3 mins., then error code is displayed.
Power is turned ON, and “EE” or “EF” are displayed
after “PLEASE WAIT” is displayed.
Display messages do not appear even when remote
controller operation switch is turned ON (operation
lamp does not light up).
Operation display appears but soon disappears even
when remote controller operations are executed.
After “startup” display, “00” is dis-
played (correct operation).
After “startup” display, error code is
displayed.
After “startup” display, “F1” (negative
phase) is displayed.
After “startup” display, “00” or “EE” is
displayed (“EE” is displayed when a
test run is made).
After “startup” display, “EA” (error for
number of units) or “Eb” (unit number
error) is displayed.
After “startup” display, “00” is dis-
played (correct operation).
After “startup” display, “00” is dis-
played (correct operation).
After “startup” display, “00” is dis-
played (correct operation).
• After power is turned ON, system startup lasts for about 2 mins., and
“PLEASE WAIT” is displayed (correct operation).
• Outdoor unit’s safeguard installation connector is open.
• Negative phase and open phase of outdoor unit’s power terminal board
(Single phase: L, N,
/triple phase: L1, L2, L3, N,
)
• Incorrect connection of outdoor terminal board (Single phase: L, N,
/
triple phase: L1, L2, L3, N,
grounding and S1, S2, S3)
• Outdoor unit and indoor unit construction differ
• Wiring for the indoor and outdoor unit is not connected correctly. (Polarity
is wrong for S1, S2, S3)
• Remote controller transmission wire short
• There is no outdoor unit for address 0 (address is something other than
0).
• Remote controller transmission wire burnout
• After cancellation of function selection, operation is not possible for about
30 secs. (correct operation).
6
Register a telephone number
The telephone number of the repair shop, sales office, etc., to contact if an error occurs can be registered in the
remote controller. The telephone number will be displayed when an error occurs.
For registration procedures, refer Function selection of remote controller.
(*1)
After turning ON the power, the system will go into startup mode, and the remote controller operation lamp (green)
and the display section
’
s “PLEASE WAIT” will flash. Also, in the case of the indoor substrate LEDs, LED 1 and
LED 2 light up (when address is 0) or become dim (when address is not 0), and LED 3 flashes. In the case of the
outdoor substrate LED display, and are displayed
alternatively at 1-second intervals.
• If one of the above operations does not function correctly, the following causes should be considered, and if
applicable, dealt with. (The following symptoms have been determined under test run mode. Note that “startup”
in the chart means the *1 display above.)
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